Top 5 Window and Door Suppliers in Melbourne for Renovation Projects

Which Window Suppliers in Melbourne Do Renovation Projects Actually Use?

For most Melbourne renovation work the five suppliers are ROPO Windows for factory-direct import, Stegbar and Trend for national manufacturing with showrooms, A&L for a deep residential range with published performance data, and Southern Star for aluminium and timber. Those are the window suppliers Melbourne renovators compare, and each answers a different question about risk and warranty.

The list is not a league table. A renovation in Brunswick on a weatherboard cottage and a renovation in Balwyn on a 1970s brick veneer can specify the same window and still need different suppliers, because the constraint is rarely the profile. It is the survey, the permit, the demolition sequence, the point at which the plaster comes off and the question of who is standing on site when the frame does not fit the hole it was measured against. The sections after the five names are the tests that separate one route from another; read them before you request a quote, not after.

One more thing worth saying at the start. In this market the phrase window supplier is used for four different businesses, and most of the confusion in a renovation tender comes from comparing a business that measures and installs with a business that manufactures to a drawing and ships. Those two are not substitutes. They are different products with different failure modes, and the rest of this article keeps them apart on purpose.

What supplier means when the job is a renovation

A manufacturer makes the frame and the sash and sells under its own name, usually with showrooms, a measure-and-quote service and an installation arm. A fabricator buys systems from a systems house and builds to those systems under licence, which means the profile is a known quantity and the workmanship is local. An importer holds finished units and standard sizes in stock and adds margin for logistics, storage and local service. A factory-direct exporter sells from its own plant to your schedule, with freight, customs and installation arranged by you, your builder or your installer.

All four appear on a Melbourne renovation shortlist and all four will quote the same opening. What differs is where the risk sits when something is wrong. With a manufacturer or a fabricator the measurement risk sits with the party who stood in the room, because they have someone who can come back. With a stock importer the risk sits with whoever holds the paperwork for that container. With a factory-direct order the risk sits with the person who signed the survey sheet, and the factory's obligation is to build exactly what that sheet says and to prove it before the unit is packed.

That is why the survey is the centre of this article rather than an afterthought. A renovation is the one purchase where the opening is almost never what the plan says it is. Walls have moved, lintels have sagged, a previous owner has packed a frame with timber and render, and the reveal depth changes from one side of the room to the other. Any supplier can deliver a good window. Only a supplier working from a proper survey delivers a good window that fits.

The three routes behind almost every Melbourne renovation quote

Strip the branding away and most renovation quotes come from one of three routes. The first is local manufacture with installation, where the window is made in Australia and fitted by the supplier or by a contractor the supplier nominates. The second is local supply of stocked or semi-stocked units, which is fast but limited to what the range covers. The third is direct import against a project schedule, where every unit is made to a surveyed size, tested against the standard the surveyor will ask about, and shipped as a set.

The routes differ in three practical ways. Programme is the obvious one, though not in the direction most people assume: a local fabricator with a full book can be slower than a factory that starts on your drawings next week. Flexibility is the second, because a direct order can change a reveal, a mullion position, a hinge side or a frame colour without a tooling cost, while a stocked range cannot. Evidence is the third and the one renovators underestimate. A local supplier usually holds reports for the systems it sells; a direct import order needs a report that covers the specific system, the specific glass build-up and the specific opening type you are buying, and it needs to arrive as a document rather than as a claim.

Where the three routes meet is the interface. Someone has to own the junction between the window and the wall, the window and the flashing, the window and the internal lining. In a supply-and-install contract that is normally the supplier's installer. In a direct import order it is your builder, and it has to be written into the scope before the first unit is carried upstairs. Renovations fail at interfaces far more often than they fail at products.

How this shortlist was assembled, and what it leaves out

The list was built from suppliers whose product ranges and sales routes are published on their own websites, then filtered for relevance to renovation work: a range that covers both windows and doors, published technical material a designer can specify from, and a route that reaches a Victorian site. Only public descriptions are used. No capacity, revenue, headcount, market share, price or lead-time figure is attributed to any company here, and the order reflects fit for renovation buying rather than size.

Two exclusions are deliberate. Suppliers who sell only fixed sizes online are left out, because renovation work is surveyed openings and site tolerances, and a stocked size is a compromise dressed as a saving. Suppliers who resell without holding test evidence are also left out, because a Victorian building surveyor will ask for the report and a reseller often cannot produce it. That second exclusion matters more than it sounds: the cheapest line in a renovation tender is often the one with the thinnest documentation, and the cost of discovering that after the frames are on site is not measured in dollars alone.

If you want to see how ROPO handles the Melbourne side of a direct order before reading the rest, the ROPO Melbourne windows and doors page sets out the showroom, the appointment route to the factory and the standards the company works to. The builder buying guide covers the measurement and scheduling side in more detail, including the survey format a factory order depends on.

The Five Window and Door Suppliers, and the Role Each Plays in a Renovation

Read the next five entries as five commercial offers rather than five brands. The question is not which company is best; it is which offer matches the way your project buys, installs and warrants its joinery. That is why the window suppliers Melbourne renovators shortlist fall into five commercial shapes rather than five grades, and why a quote from one of them is not directly comparable with a quote from another until the scope is normalised.

Every description below is limited to what the company publishes about itself: its range, its sales route and the technical material it makes available. Nothing here is a performance claim, and nothing here should be read as a statement about build quality, because build quality varies by factory, by line and by the supervisor on the day. What a buyer can check before an order is narrower and more useful: who makes the unit, who measures it, who installs it, and who answers for it in year six.

ROPO Windows: factory-direct supply built to a surveyed schedule

ROPO Windows is a Chinese window and door manufacturer working from its own factory in Fuzhou, Fujian, with sixteen years in the trade and deliveries to more than one hundred countries. The company makes aluminium and uPVC windows and doors to order, holds AS2047, NZS4211 and Miami-Dade testing for the systems it sells, and offers a ten-year warranty with a minimum order of one unit. For Victorian buyers the relevant detail is that the company publishes membership of WERS and AGWA, the two bodies an energy assessor and a glazing supplier in this market will recognise.

What a direct order actually buys is control over the schedule. Every unit is made to a surveyed size, so a renovation with eleven different openings does not pay a made-to-measure premium eleven times, and a repeated house type can be ordered as a set with consistent sightlines. Frame colour, glass build-up, mullion positions, hinge side, screen type and sill detail are decided on the drawing rather than selected from a stock list. The company publishes its custom aluminium window range and the factory profile, and the Melbourne double glazed aluminium windows page shows how an Australian order is configured for this market, including single-colour and dual-colour finishes.

What it does not buy is a local warranty holder or a local installation crew. The warranty is a factory warranty, honoured through the project team, and installation is your builder's or your installer's scope. Buyers who need one number to call for everything should choose a local route and pay for it. Buyers who can hold the survey, the compliance file and the programme get a materially better-specified unit for the money, which is why this route sits first for project work and last for a single emergency replacement before a sale.

Stegbar: national manufacturing with showrooms and an installation arm

Stegbar is an Australian window and door supplier whose published range runs across aluminium, thermally broken aluminium, timber and composite lines, sold through showrooms and an installation service. Its collections are organised by material and by performance intent rather than by size, covering residential aluminium, thermally broken systems, a premium architectural line, cedar and meranti timber, and commercial aluminium, alongside doors, wardrobe doors, shower screens and splashbacks. The practical value for a renovator is proximity: a showroom to stand in, an installation arm, and a quoting process that separates homeowners, builders, architects and commercial clients.

The offer suits work where the client wants to see and touch the product before signing, and where a single contractor for supply and install removes an argument later. It also suits projects whose specification is close to a catalogue family: a house lot of awning and sliding windows in a standard colour with a small number of specials. The limit appears when the drawing departs from the family. An unusual reveal, a non-standard mullion spacing, a frame colour outside the published range or a bespoke door leaf will either move to a custom line or move to another supplier.

Commercially, a national supplier carries overheads a factory does not, and the quote reflects that. That is not a criticism; it is the price of a showroom, a local installation crew and a name a surveyor already knows. The question for a renovator is whether those three things are worth more on this project than the specification they displace. On a heritage terrace with difficult access and a client who wants one contract, they often are. On a nine-opening weatherboard extension with a fixed budget and a drawn schedule, they often are not.

A&L Windows and Doors: a deep residential range with published performance data

A&L is an Australian window and door manufacturer whose published range covers awning, bifold, corner, double hung, fixed, louvre, sashless and sliding windows, plus sliding, bifold, corner sliding and French doors and aluminium entry door frames. The part that matters on a renovation is the documentation layer: technical files, installation and product care guidance, and published performance information covering bushfire ratings, acoustic performance, cyclone resistance, light and ventilation, alongside double glazing, thermally broken systems, low-e glass and an inline reveal detail.

That documentation is what a designer or a building surveyor actually needs. A renovation in a bushfire-prone pocket on the urban fringe has to demonstrate a tested assembly rather than a good intention, and an acoustic requirement near a rail corridor or an arterial road has to be specified with a glazing build-up rather than a wish. A supplier that publishes its performance data lets you answer those questions before the order instead of during the inspection. The virtual showroom and the option sets also shorten the decision loop for a client who cannot visit during business hours.

The trade-off is the familiar one for a range-based manufacturer. The catalogue defines what is available, and the option list defines how far it can be stretched. Where a renovation needs a profile matched to an existing facade, a non-standard reveal or a colour outside the powder-coat range, the answer is either a special order or a different route. Buyers should ask, before deposit, which parts of the quotation are range standard and which are specials, because that split is where a programme usually slips.

Southern Star Windows and Doors: aluminium and timber from one manufacturer

Southern Star Windows and Doors describes itself as a designer, manufacturer and supplier of two brands: Southern Star aluminium windows and doors, and Canterbury timber windows and doors. The published product set runs across awning, sliding, casement, bifold, double-hung, louvre and sashless windows in both materials, with sliding, stacking, bifold and French doors, plus screens, parts and hardware, and named glass and coating solutions for thermal performance, sound, security mesh and fine-texture powder coating.

The distinguishing feature is the material mix. A renovator restoring a federation or interwar house often needs a timber window that matches an existing profile and sightline, while the rear extension of the same house needs an aluminium unit that meets a current energy assessment. Very few suppliers can quote both from one drawing set. Being able to do that shortens the coordination loop and reduces the chance that two suppliers deliver two different sightlines into the same elevation, which is one of the more expensive mistakes a renovation can make.

The constraint is range depth within each material. A project that needs a thermally broken system to a specific performance target, a fire-rated assembly or a very large spanning panel will usually end up with a specialist or a systems house instead. For the common Melbourne job, which is a period house with a modern rear addition, this is one of the few routes that can hold both halves of the specification without splitting the order.

Trend Windows and Doors: national series through showrooms and dealers

Trend Windows and Doors is an Australian manufacturer with a published range of aluminium and timber window and door series, sold through company showrooms and a dealer network. Its series are marketed by design intent, from a timber series and a residential aluminium series through an architectural range, a commercial range and two thermally broken and hybrid energy-efficient ranges, with separate product families for sashless and louvre windows and for bi-fold, sliding and stacking doors.

The commercial shape is a national manufacturer with local distribution. The product is made in Australia, the dealer or showroom holds the relationship, and installation is either the company's own crew or a contractor the dealer works with. For a builder running several renovations across Melbourne and the surf coast, that model has an obvious advantage: the same series, the same hardware and the same trim language can be ordered through one channel for sites that are hours apart, which keeps a portfolio consistent.

The limit is the same as any series-based offer. The catalogue defines what is available and the dealer defines how far it can be stretched, so a project needing a specific sightline to match an existing facade, a bespoke door leaf or a non-standard colour will find the answer is either a longer special order or a different supplier. Ask the dealer which quotation lines are series standard before deposit, and ask what happens to the programme if a special is rejected at drawing stage.

How to use this list without turning it into a brand argument

Turn the list into four questions. Does the project need units built to a drawing, with frame and glass specified for a particular exposure? Start with the factory-direct route and put the compliance file together before the deposit. Does the client want to walk into a showroom and see the product? Start with the national manufacturers. Is the house old enough that timber and aluminium have to meet in the same elevation? Start with the manufacturer that makes both. Does the site sit under a bushfire overlay or beside a rail line? Start with the supplier that publishes performance data for those assemblies.

The mistake renovators make is to run all five in a tender and compare the bottom line. Five quotes built on five different scopes cannot be compared, and the window suppliers Melbourne builders regret choosing are usually the ones who left the most out. A better process is to choose the route first, then get two quotes within that route on an identical scope. That is also the only way to test whether a price is genuinely competitive or simply thinner, and the prices explained page sets out what the line items usually are.

For buyers weighing local supply against import, the honest framing is that window supply is a logistics business as much as a manufacturing one. The factory that builds the best unit still fails the project if the survey is wrong or the container lands after the plasterer. The Australian purchasing guide covers the sequence, and the local partner route is worth reading if you want a display home or a distributor within reach. The Sydney supply page is useful as a comparison because the city conditions differ while the process does not.

The next three sections are about the things that decide which of those failures you are exposed to. They are written for Melbourne housing stock and Melbourne weather, because a specification that is right in Brisbane is not automatically right in a cold, changeable, westerly-facing terrace.

What a Melbourne Renovation Does to a Window Specification

Most windows that disappoint their owners in Melbourne were not cheap. They were specified for the wrong thing: a mild showroom conversation, a catalogue photo, a price per square metre. The window suppliers Melbourne renovators end up recommending are the ones who asked about the wall before they asked about the frame, because in this city the wall is the variable. Weatherboard moves, brick veneer hides a timber frame that has been taking load since the 1970s, and solid brick has a reveal depth that decides how far a new frame can sit back.

Four conditions change a Melbourne specification more often than any other: the construction of the wall, the orientation of the room, the cold-morning behaviour of the glazing, and the planning controls that fix what the opening is allowed to look like. Each one can be dealt with on a drawing. None of them can be dealt with after the architrave is on.

Weatherboard, brick veneer and the openings behind them

A weatherboard house is a timber frame with a skin of boards, and both parts move. Boards shrink and swell with the season, the frame dries out over a century, and a window that was square in 1955 is usually not square now. The practical consequence is that a replacement frame must be measured to the opening as it is, not to the drawing as it was. It also means the flashing detail matters more than the frame: a head flashing that does not lap over the board above it will let water into the wall cavity regardless of how good the window is.

Brick veneer is a timber frame with a brick skin and a cavity between them. When a window is replaced the brickwork usually stays, so the new frame has to fit the existing masonry opening, and the reveal depth is fixed by the brick and the stud. A deeper frame will not fit without cutting brick; a shallower frame leaves the window sitting back in a way that changes the shadow line on the facade. Solid brick is the same problem in a harder material, and in a heritage terrace the brick may be the only thing holding the front wall straight, which is why the opening is often kept and the frame built to it.

The specification answer is a survey that records the opening in three dimensions at several points, the reveal depth on each side, the square of the head and the sill, and the condition of whatever is behind the lining. That survey is the document a factory builds from, and it is the document a local fabricator will also want before quoting. Anything less is a guess with a price attached. The measurement guide sets out the difference between hole size, frame size and the installation gap, and it is worth reading before you accept anyone's measurement.

Installation sequence belongs in the same conversation. On a renovation, windows usually go in after the frame is straightened and before the lining is closed, and the installation guidance covers the order of flashing, packing and sealing. Get that order wrong and the best window in the catalogue will leak at the head within two winters.

The west-facing living room and a Melbourne summer

The classic Melbourne renovation problem is a rear living space that faces west to catch the garden and then cooks from three in the afternoon. The window is the control surface for that, which means the glass specification is doing energy work rather than decoration. Solar heat gain, visible light transmission and insulation value move together, and a glass that fixes summer heat gain by going dark will also darken the room in winter, when the same window is the main source of free heat.

The practical answer is a glass build-up chosen per orientation rather than one glass for the whole house. A west-facing sliding door onto a deck deserves a better coating than a small south-facing bathroom window, and a north-facing living room can take a different treatment again. The glass options page sets out the combinations, and a WERS rating gives an assessor a number to work with instead of an assumption. Where a whole-house figure is being modelled, the rating that travels with the glazing is the one the assessor can use.

Shading belongs in the same conversation and it is usually cheaper than glass. An eave, a pergola, an external blind or a deep reveal does more to a west wall than a coating, and it does it without reducing daylight. A specification that upgrades the glass and ignores the shading is paying twice for one result. On a renovation the eave and the window head are often already fixed, which is precisely why the glass decision should be made before the frame is ordered rather than after the first summer.

Draughts, condensation and the cold morning

Melbourne's winters are not extreme, but they are long enough and damp enough that single glazing shows its weakness every morning between May and September. Water on the inside of the pane is condensation, and condensation is a symptom of two things: a cold surface and a source of moisture. Double glazing raises the inner pane temperature, which reduces the symptom. A thermally broken frame does the same at the edge, where aluminium would otherwise conduct the cold straight through. Neither fixes a bathroom extractor that does not work.

The other half of the cold-morning problem is air. An old window leaks at the sash, at the meeting rail, at the sill and around the frame, and a renovation that replaces the glazing but reuses a tired frame keeps the leak. That is why the frame specification matters as much as the glass: a double hung window with proper pile seals and a drainage path behaves differently from the same window with worn brush seals, and the difference shows up as a draught at ankle height rather than as a number on a certificate.

Hardware is the third part of the same story. A hinge, a stay, a lock and a handle are the parts that get used every day, and they are the parts where a cheap unit announces itself within a year. Ask what the hardware is made of, not just what colour it is, and ask whether the same hardware schedule applies to the wet-side units as to the sheltered ones. On a direct import order this is a line on the drawing: hardware series, finish, and a note that all fixings are corrosion resistant. Hardware is also the first place a warranty gets tested, because a stiff handle in year three is noticed long before a failed seal is.

Heritage overlays, permits and the shape of the opening

A large part of inner Melbourne sits under a heritage overlay, and the overlay changes what a window is allowed to be before it changes what it is made of. A street-facing opening in a heritage place is usually expected to keep its proportions, its reveal depth and its profile; a rear addition is treated more generously. That distinction is a planning question, and it is decided before a supplier is chosen, because a frame that matches the approved drawing is the only frame that can be installed without a second application.

Two practical consequences follow. First, the survey and the approval have to agree: if the drawing shows the existing reveal and the approval requires the existing sightline, then the new frame is being designed to a constraint, not selected from a range. Second, the glazing has to satisfy both the heritage expectation and the energy assessment, which sometimes pulls in opposite directions, and the resolution is usually a slim frame with a high-performance double glazed unit rather than a thicker frame with ordinary glass. The Melbourne double glazing notes and the renovation window guide both deal with that trade-off, and the Melbourne supply page shows how the frame options are presented for this market.

The permit itself is a separate track. A renovation that alters a window opening, adds a door or changes the external appearance normally needs a building permit, and a heritage overlay may add a planning requirement on top. Neither is a reason to delay the window order, provided the supplier is told what stage the approval is at. What causes a problem is an order placed on an unapproved drawing that later changes, which is why the shop drawing approval step exists and why it should be treated as a technical review rather than a formality.

Compliance and Evidence a Victorian Renovation Has to Produce

Compliance is where the window suppliers Melbourne renovators choose are separated most cleanly, because it is the one part of the job that cannot be improvised on site. A window is a building element with a tested performance claim attached to it, and the claim has to be traceable to the unit in the wall. The good news is that the evidence is not complicated once it is understood: a report, a rating, a glass marking and a drawing that all describe the same window.

The bad news is that the four documents are often produced by four different parties, and nobody checks that they agree until the surveyor asks. A renovation is especially exposed to this because the schedule is small, irregular and full of one-off sizes, so the temptation to accept a generic certificate is high. The sections below set out what is actually being asked for, in the order a project usually meets it.

What the building surveyor will ask for

A building permit in Victoria is issued by a registered building surveyor, and the surveyor's interest in the windows is narrow and specific: that the units comply with the relevant standards for the site, that the glazing is safe where safety glazing is required, and that the energy performance claimed in the assessment is the performance delivered. The surveyor does not need a brochure. The surveyor needs a document that names the system, the size range and the glass, and that can be matched to the schedule.

In practice that means three things should be ready before the frames arrive: the test report or certificate for the window system, the glass specification with its markings, and the drawings that show what is going where. Where the project has an energy assessment, the assessor's assumptions about glazing and frame should be visible on the same schedule. If those three sets of documents disagree, the surveyor will ask for a variation or a re-assessment, and both cost time at the worst possible moment in a renovation.

The AS2047 window range page is a useful starting point because it shows how a compliant system is presented, and the certificate page lists the standards the factory holds. Neither is a substitute for the project-specific report, but both tell you what to ask for.

AS 2047 evidence and how it maps to your order

AS 2047 is the Australian standard for windows in buildings, and a report against it describes how a particular system performed in a particular test: a size, a configuration, a glass build-up and a set of loads. That description is the boundary of the claim. A report for a tested casement does not cover a fixed window in the same frame family, and a report for one size does not automatically cover a larger one, because structural performance changes with span.

This is the single most misunderstood point in a direct import order, and it is worth stating plainly: an AS2047 certificate is evidence about a tested assembly, not a licence for every window the factory can build. The right question at order stage is whether the report on file covers the system, the glass and the size range being purchased, and the answer belongs on the purchase order rather than in an email. The comparison of AS2047 and NZS4211 explains how the two frameworks differ, and the verification guide sets out how a builder checks a certificate rather than accepting one.

For a renovation with a dozen different openings, the practical approach is a schedule that records, for each opening, the system, the tested configuration it belongs to and the glass. That schedule then becomes the document the surveyor reads, the factory builds from and the installer checks against. It is also the document that makes a warranty claim possible two years later, because it proves what was ordered rather than what was remembered.

Glass, safety glazing and AS 1288

AS 1288 governs glass selection in buildings, and its purpose is to make sure that glass in the places people fall against or walk into is capable of taking the load. In a renovation the relevant locations are predictable: full-height glazing beside a door, glazing that extends below the height a person might fall against, doors themselves, and any panel in a bathroom or stairwell. Where the standard requires safety glass, laminated or toughened glass is used, and the pane carries a permanent marking that identifies it.

The marking is what a surveyor looks for, and it is also what a renovator should check on delivery. A unit that is correct in every other respect but carries no marking leaves the project exposed, and the fix is a replacement pane rather than a conversation. The AS 1288 glass selection guide sets out where the requirement applies, and the glass options page shows the build-ups available for each location.

Insulating glass adds a second layer of documentation. A double glazed unit carries its own standard and its own marking, and the unit's performance depends on the cavity, the spacer and the coating, not just on the fact that there are two panes. That is why a specification should name the build-up rather than say double glazed, and why a substitution of equal thickness is not necessarily a substitution of equal performance.

Energy assessment, WERS and the rating that travels with the glass

Victoria's energy provisions for new work and for alterations are demonstrated through a thermal performance assessment, and the window is one of the inputs the assessor controls. The assessor does not usually care which brand of frame is used; the assessor cares about the numbers that describe it: insulation value, solar heat gain, air infiltration and the area of glazing on each orientation. Those numbers come from a rating, and a rating is only useful if it is attached to the product actually supplied.

WERS is the scheme that produces those ratings for windows in Australia, and a supplier who is a member can usually produce a rated configuration rather than an estimate. ROPO's Melbourne page states membership of WERS and AGWA, which is the practical reason an assessor can work with the numbers instead of treating the window as a default. The Australian standards and ratings guide explains how the pieces fit together, and the warranty terms are worth reading at the same time, because a rating that depends on a coating is only as durable as the coating's warranty.

The trap in a renovation is a partial upgrade. Replacing the rear windows while the front of the house keeps single glazing produces an assessment that describes a house nobody lives in, and it also produces a room that behaves differently from the rest of the house. Where the budget does not stretch to every opening, the honest approach is to model what is actually being replaced and to say so, rather than to specify a whole-house figure that the built work will not meet.

Turning Five Quotes into One Decision

By the time five quotes are on the table, the window suppliers Melbourne renovators are comparing have usually been narrowed to two or three serious options, and the decision comes down to scope rather than price. The reason is simple: a window quote is a set of promises about a schedule, and five quotes built on five different schedules cannot be ranked. Normalising the scope is the work that turns a pile of PDFs into a decision, and it takes an afternoon rather than a week.

It also protects the relationship with the builder. On most renovations the window package is the longest-lead item after the kitchen, so a decision made late, or made twice, moves the whole programme. Getting the comparison right the first time is worth more than a small saving on the frame price, which is why the comparison below is organised around what each quote leaves out rather than what it charges.

Normalising the scope before you compare

Start with one schedule and send the same document to every supplier. It should list each opening with a reference, the surveyed size, the configuration, the handing, the glass build-up, the frame finish, the screen type and the sill detail. A quote that is built from your schedule can be compared line by line; a quote built from a site visit and a photograph cannot, and the differences will only surface at drawing approval.

Then fix the commercial terms in the same request. Ask every supplier to state what is included in installation, whether the price assumes a clear site or occupied rooms, who is responsible for removing the old units, who supplies and fits the flashing, who makes good the plaster and the architrave, and what the payment schedule is. Those five questions expose most of the gap between a cheap quote and an honest one, and they take less time to answer than a dispute later.

Finally, ask for the programme in stages rather than as one number: survey, drawing approval, production, dispatch, delivery, installation. A single figure hides the dependency that matters, which is usually drawing approval waiting on the buyer, and the Trade Assurance terms are worth understanding before a deposit is paid, because they describe what protection exists if the order goes wrong.

The comparison table that ends the argument

Set the quotes out in a table with the same rows for every supplier: unit supply, glazing, finish, hardware, screens, delivery to site, installation, making good, warranty terms and programme. Fill it in from the quotes rather than from memory, and leave a row blank where the quote is silent, because a blank row is a question and a filled row is a price. The exercise usually reveals that the two cheapest quotes are missing different things rather than doing the same job for less.

Two rows deserve particular attention. The glazing row should name the build-up, not the pane count, because a double glazed unit with a different coating is a different product. The installation row should say who owns the interface with the wall, because that is where most renovation defects live. A supplier who is explicit about both is usually a supplier who has done this before, and the Australian project examples are a reasonable way to see what a completed schedule looks like in practice.

The last row is warranty. Read it as a document rather than a headline: what is covered, for how long, who administers it in Australia, and what voids it. A ten-year factory warranty and a ten-year local warranty are not the same instrument, and a buyer should know which one they are relying on before signing rather than after a hinge fails.

Where the cheap quote hides its cost

The cheapest quote in a renovation tender is rarely the cheapest window. It is usually the quote with the narrowest scope, and the missing items reappear later at variation rates that are higher than they would have been in the original price. The recurring examples are predictable: screens excluded, hardware upgraded on site, reveals packed and lined by someone else, old units left on the nature strip, delivery to the front kerb rather than to the room, and a provisional sum for glass that assumes the cheapest build-up.

A second pattern is a specification that looks complete but is not tested. A frame system with no report for the configuration being supplied, or a glass build-up that does not match the assessment, will cost more to resolve than the difference in price, because the resolution happens after the units are made. The folding door range is a good example of why configuration matters: a wide opening panel and a narrow one are not the same structural proposition, and a quote that prices them identically has not thought about it.

A third pattern is a programme that assumes everything goes right. Renovations rarely do: a wall is out of square, a lintel needs replacing, the plasterer arrives early. A supplier who quotes a fixed delivery date without a drawing approval stage is either guessing or planning to blame you. Ask what happens if the site is not ready, and get the answer in writing.

Deposit, payment and the programme

Payment terms are part of the specification. A local supplier typically asks for a deposit at order and the balance before installation; a factory-direct order typically asks for a deposit at order and the balance before shipment, which means the money leaves earlier in the sequence and the buyer carries more of the risk for longer. That difference should be priced, not ignored, and it is the reason a factory price and a local price are not directly comparable even when the unit is the same.

The programme follows the same logic. On a direct order the critical path runs through the survey, the shop drawings, the approval, production, inspection, freight and clearance, and the two stages that most often move are the ones that depend on the buyer. Booking the survey early, approving drawings within days rather than weeks, and having the customs paperwork ready before the container lands will do more for the delivery date than any conversation with a salesperson.

Where the renovation has a fixed completion date, the window order should be placed against the demolition date rather than the installation date, and the builder should hold a float for it. The Melbourne renovation window supply route is built around that sequence, and it works best when the buyer treats the schedule as a document that both sides update.

About ROPO Windows

ROPO Windows is a Chinese manufacturer of custom aluminium and uPVC windows and doors, working from its own factory in Fuzhou, Fujian. The company has been making windows and doors for sixteen years and has delivered to more than one hundred countries, which matters for a Melbourne renovation for a practical reason: a factory that ships regularly to different standards has already met the packing, documentation and customs questions a first-time importer discovers the hard way.

Aluminium and uPVC are both made in-house, so a project that mixes materials on one elevation gets one packing list and one shipping document rather than two. The company holds a ten-year warranty and accepts a minimum order of one unit, which is unusual in the category and deliberate: the single-unit minimum is what allows a renovator to order one prototype unit, fit it, and check the sightline against the room before committing the rest of the schedule. The ROPO Melbourne page sets out the showroom, the appointment route to the factory and the standards the company works to.

The factory, the range and the limits of a direct order

The plant is in Fuzhou and the range covers the opening types a renovation actually uses: awning, casement, sliding, fixed, tilt and turn, double hung, louvre and folding, in aluminium and uPVC, with matching door families. Finishes are powder coating, anodising, PVDF and woodgrain, in a single colour or a dual colour with a different tone inside and out, which is the detail that decides whether a period facade and a modern interior can share one window.

The limits should be stated as clearly as the range. A direct order does not come with a local installation crew, a local warranty holder or a showroom down the road. It comes with a factory that builds to a drawing and a project team that administers the order, and it suits buyers who can hold the survey, the compliance file and the programme themselves. That is a real constraint, not a marketing caveat, and it is the reason this route is recommended for project work rather than for a single emergency replacement.

Certifications, and the boundaries they carry

The systems sold into Australia are tested to AS2047, with AS2208 and AS4666 covering the glass side of the assembly and AS1288 governing where safety glazing is required. The New Zealand market is served against NZS4211, and the North American impact market is covered by Miami-Dade testing. The company is a member of WERS and AGWA. Each of those is a real document, and each has a boundary: an AS2047 report covers a tested configuration, not every window the factory can build, and a Miami-Dade approval covers a tested assembly, not a similar one.

That boundary is stated here because a buyer should apply it to every supplier, including this one. The right question at order stage is whether the report on file covers the system, the glass and the size range being purchased, and the answer belongs on the purchase order. The quality and testing page shows the test equipment and the inspection steps, which is the part a certificate cannot tell you: whether the plant tests the units it ships or only the ones it sent to a laboratory once.

MOQ, samples and who this route suits in Melbourne

One unit is the minimum, and a sample can be ordered before a project is committed. For a renovator that is the cheapest risk control available: build the awkward corner window first, fit it, look at the sightline from the street, and change the drawing if it is wrong. For a heritage terrace where every opening is a different size, it means the whole job can be a factory order rather than a series of compromises against stocked sizes.

The route suits buyers who can hold the survey, the compliance file and the programme. It does not suit a homeowner who wants one number to call for supply, installation and a repair in year six. Being clear about that is more useful than pretending the two models are the same, and the Melbourne project supply brief is the place to start if the first model describes your renovation.

Custom Production Process

A factory-direct window is only as good as the drawing it was built from, and the process below exists to make the drawing agree with the wall before any aluminium is cut. Each step produces something the buyer can check, which is the difference between a process and a promise.

Survey, schedule and shop drawings

An order starts with the schedule and the survey, not with a catalogue. The factory reviews the opening sizes, the handing, the mullion positions, the glass, the screen and the sill detail, then issues shop drawings for approval. Nothing is cut until the drawings are signed. This is the step where a wrong survey is caught, and it is why a direct order can be safer than a local one: the error is found on paper, in a review, before production, rather than on site after delivery.

Buyers should treat the approval as a technical review rather than a formality. Check the handing against the plan, check that fixed and opening panels line up with the elevation, check that drain holes are on the outside face, and check the glass build-up against the assessor's report. On a renovation, add one more check: that the frame depth matches the reveal actually measured, because that is the dimension that most often changes between the drawing and the wall.

Profile, glass and hardware selection

The materials are chosen against the exposure, not against a price list. Aluminium profiles are powder coated or anodised for the coastal pockets around Port Phillip; uPVC is used where thermal performance or a specific finish matters more than slim sightlines; glass is selected per orientation, with laminated or toughened panes where AS1288 requires them and low-e coatings where the assessment needs them. Hardware is matched to the opening type and to the environment.

Because the units are made to order, the selection is per opening rather than per project. A west-facing awning window can take a different glass from a south-facing bathroom unit, and a tilt and turn can take a different hardware series from a custom door on the same elevation. That flexibility is the main technical argument for the route, and it is wasted if the schedule does not use it.

Assembly, glazing and the five-step quality check

Frames are cut, machined, assembled and glazed in the same plant, which means the tolerance between sash and frame is set by one production line rather than negotiated between two suppliers. Glazing is set on the correct blocks, drainage paths are checked before the beads go on, and hardware is fitted and operated before packing. The five-step inspection covers the profile and finish, the dimensions against the approved drawing, the glazing and gaskets, the operation of every opening sash and lock, and the packing and labelling against the delivery list.

The output of that inspection is the evidence a buyer needs at the other end: a unit that matches the drawing, a packing list that matches the order, and a label on every unit that ties it to its opening reference. That is what makes a factory inspection useful to a surveyor rather than merely reassuring to the buyer, and it is the reason the drawing approval stage is worth taking seriously even when it delays the order by a week.

Packaging and Shipping

The last hundred metres of a factory order are the ones that damage it. A window that survives production and fails in transit is a remake, a delay and an argument, and the packing specification is what prevents all three. On a renovation the cost is higher than on a new build, because the site is occupied and the opening is often the only one of its size.

How units are packed, and what the packing list has to say

Units are packed upright, with corner protection, edge protection and a film wrap, then crated or bundled so that the frame carries no point load. Glass is protected on both faces, hardware is either fitted and protected or packed separately and labelled per opening, and every bundle carries a printed packing list matched to the order reference. Nothing should need to be opened on site to be identified, because opening a pack on site is how damage happens. The site uses a three-layer packing standard, and the packaging guide sets out the sequence from frame protection to container loading.

For a renovation, one extra instruction belongs on the packing list: the room or the elevation each unit belongs to. A factory ships to an opening reference; a site works by room. Writing both on the label costs nothing at the factory and saves a morning on site, particularly when two openings are similar in size and different in handing.

Containers, the port and the customs file

FCL shipments load at the factory and move through Fuzhou or Xiamen to Melbourne. LCL shipments are consolidated, which suits a smaller order but adds handling, so the packing has to be stronger and the labelling clearer. Timber packing material has to meet Australia's biosecurity requirements, which is a document question as much as a packing question, and the customs entry needs the invoice, the packing list, the bill of lading and the test evidence in a form the broker can use.

At the Melbourne end the buyer organises the customs entry, the port charges, delivery to site and unloading. Those are real costs and they belong in the landed-cost comparison rather than in a separate conversation after the container arrives. The double glazed windows Melbourne page and the Australian purchasing guide set out the sequence, and a broker who has handled joinery before will save more than their fee in demurrage alone.

Window Suppliers Melbourne FAQ and Quote Request

The questions below come up on almost every Melbourne renovation enquiry. They are answered briefly here so that the first conversation with a supplier can start from the project rather than from the basics.

Are imported windows acceptable in a Victorian renovation?

Yes, provided the units carry the evidence the project requires. An imported window is treated the same way as a locally made one: the surveyor wants a report or certificate that covers the system, the glass and the configuration, plus the energy performance the assessment was based on, plus safety glazing where AS 1288 requires it. What is not acceptable is a claim without a document, or a document for a different configuration. Buyers should obtain the evidence before the order, not with the delivery.

How long does a factory-direct order take?

The sequence is fixed even though the duration is not: survey, shop drawings, approval, deposit, production, pre-shipment inspection, sea freight, customs clearance, delivery. Each stage has a dependency, and the two that most often move are drawing approval, which waits on the buyer, and clearance, which waits on documents. Ask for the schedule in stages rather than as one number, and hold the delivery window against the demolition or plaster date rather than against the order date.

Can you match the existing openings in an old house?

Yes, and it is the main reason renovators use a made-to-order route. The opening is surveyed, the reveal and the existing sill are measured, and the new frame is built to those dimensions rather than to the nearest stocked size. On older houses the survey should also record whether the opening is square and whether the wall has moved, because a frame built to a nominal size will not fit an opening that has. A heritage overlay adds a design constraint on street-facing openings, and the frame then has to satisfy the approval as well as the measurement.

Do you supply timber as well as aluminium and uPVC?

Aluminium and uPVC are both made in the same plant. Timber is not part of the range, which is worth knowing before the shortlist is drawn: a period facade that needs a timber profile matched to the original is better served by a manufacturer that runs both materials, and the suppliers in the second section who do are the right starting point. Where the requirement is a modern aluminium or uPVC window behind an existing timber reveal, the direct route works, and the two can coexist on one elevation.

What do you need to quote?

A plan or a marked-up elevation, the opening sizes or a survey, the opening types, the glass requirement, the finish, the site suburb and the required delivery window. Add the certification the project needs, the name of the building surveyor if one is appointed, and whether the site sits under a heritage overlay or a bushfire overlay. With those, a quote can be built line by line against the same schedule used by every other supplier, which is the only way the numbers mean anything.

If the renovation is in Melbourne and the route above matches the way you buy, the fastest next step is to send the schedule and the elevation through the Melbourne windows and doors project supply page. If the project needs local installation and a single point of accountability, the same page explains what the display home and distributor route looks like. Either way, the comparison only becomes useful once the five quotes describe the same window, and that single habit is what separates a decision from the usual tour of window suppliers Melbourne has on offer.