Spraying uPVC windows is a popular alternative to replacing them. Instead of fitting new frames, a specialist cleans, prepares, and coats the existing plastic with a flexible coating system that bonds to the surface, changing the colour and refreshing the look for a fraction of the cost of new windows.
So what does it actually cost? For most professional jobs, uPVC window spraying runs from about $60 to $200 per window, with a typical single window landing between $80 and $140. Small windows with minimal preparation sit at the lower end. Large frames, dark colour changes, and awkward access push the price higher. Whole-house projects usually attract a lower rate per window because setup and travel costs are shared across the job.
This guide explains the going rates, the factors that change them, how spraying compares with replacement, and how to get an accurate quote before you commit.
What uPVC Window Spraying Involves
Understanding the process makes the pricing easier to follow. A professional job normally follows these steps:
- Cleaning and degreasing the frames to remove dirt, grease, and silicone residue.
- Sanding and keying the surface so the coating can grip.
- Masking the glass, handles, hinges, seals, and surrounding walls.
- Applying a primer or bonding coat, followed by two or more colour coats.
- Curing and reassembling, then removing all masking and checking the finish.
Each of these steps takes time, and labour is the largest part of the bill. More preparation means more hours, which means a higher price per window.
Typical Cost Per Window
The figures below are shown in dollars as a general reference. Treat them as ballpark ranges rather than fixed rates, since labour and material costs differ from one market to another.
- Small or standard single window: roughly $60 to $120 each.
- Average full-size window: roughly $90 to $160 each.
- Large windows, bays, and French doors: roughly $150 to $250 or more each.
- Whole-house projects (10 or more windows): often 10 to 25 percent less per window than a single-frame job.
- Colour change from light to dark: usually adds 15 to 40 percent.
- Minor repair and preparation work: adds $20 to $60 per window where needed.
One window on its own is always the most expensive option per frame, because the fixed costs of travel, setup, and materials are spread over a very small job.
What Affects the Cost Per Window
Window size and number of panes
Price is usually based on surface area. A large multi-pane window has far more frame edge to coat than a small single window, so it takes longer and uses more material.
Colour change
Keeping a similar colour is the cheapest option. Going from a light colour to a dark one, or the reverse, usually needs extra coats and a stronger primer to block the original colour and prevent it showing through.
Condition and preparation needed
Frames in good condition need only light cleaning and keying. Frames with peeling film, chipped corners, mould staining, or old sealant require repairs and extra sanding, all of which add labour.
Access and height
Ground-floor windows are quick to reach. Upper floors may need ladders, scaffolding, or specialist access equipment, and that cost is passed on to the job.
Finish and number of coats
A standard two-coat finish costs less than a high-build system designed for extra durability or a specific sheen level. Specialty finishes and colour matching add to the price.
Number of windows
Volume is the single biggest lever. The more windows in one booking, the lower the average price, because preparation, travel, and equipment costs are shared.
Hardware, seals, and masking
Handles, hinges, and gaskets must be masked, removed, or replaced. If old seals are painted or brittle and need swapping out, expect extra material and labour charges.
Spraying Versus Replacing Windows
Spraying is usually the cheaper route by a wide margin. As a rough comparison, replacing a standard window commonly costs several hundred dollars per frame once the unit, labour, and finishing are included, while spraying the same window typically costs well under half of that.
The trade-off is purpose. Spraying changes appearance and refreshes worn frames. It does not improve insulation, fix failed sealed units, or solve structural problems such as rot, warping, or draughts. If the frames are sound and only the look is tired, spraying offers strong value. If the windows are draughty or misted between the panes, replacement may be the better long-term spend.
DIY Versus Professional Spraying
Do-it-yourself kits for uPVC usually cost around $25 to $60 per window in materials, which looks attractive next to professional prices. The catch is preparation and technique. Without proper cleaning, sanding, priming, and dust control, the finish can flake, look patchy, or peel within a season.
DIY makes sense for a single low-visibility window or a small outbuilding. For front-facing windows, large frames, or a whole house, professional spraying is generally more reliable and often comes with a workmanship guarantee.
Extra Costs to Budget For
- Repairs: filling cracks, replacing damaged trim, or re-sealing joints.
- New sealant: old silicone is often removed and replaced after spraying.
- Replacement hardware: handles and hinges that cannot be reused.
- Access equipment: scaffolding or platform hire for higher windows.
- Travel or call-out charges: common for small jobs or remote addresses.
- Glass protection: some finishes require extra masking or a protective coating.
How to Get an Accurate Quote
- Count the windows and note their approximate sizes.
- Decide on the exact colour and finish you want.
- Take clear photos of each frame, including any damage.
- Ask whether repair, sealant, and hardware replacement are included.
- Confirm how many coats are applied and what preparation is done.
- Ask about the warranty on both the coating and the workmanship.
- Get at least two or three quotes using the same brief.
Comparing quotes on identical specifications is the only way to tell whether a low price reflects good value or simply skipped preparation.
How to Keep the Cost Down
- Book the whole house at once instead of one or two windows at a time.
- Stay close to the existing colour to avoid extra coats and primer.
- Handle small maintenance yourself, such as cleaning and removing old sealant.
- Schedule off-season, when trades are typically quieter.
- Combine with neighbours if several nearby homes need the same work.
Frequently Asked Questions
How long does sprayed uPVC last?
A properly prepared and applied coating typically lasts around 8 to 12 years before it needs refreshing, and often longer on sheltered walls.
Is spraying cheaper than new windows?
Yes, usually by a large margin. Spraying costs a fraction of replacement, but it only changes appearance and does not improve insulation or performance.
Does spraying void a window warranty?
It can. Check the original manufacturer terms before any coating work is carried out, since some warranties exclude alterations to the frame surface.
How long does the job take?
A single window is often a same-day job. A full house commonly takes two to four days, including drying time between coats.
The Bottom Line
Expect to pay roughly $60 to $200 per window for professional uPVC window spraying, with most standard windows falling between $80 and $140. Size, colour change, condition, access, and the total number of windows are the main factors that move the price. Whole-house bookings offer the best value per frame, and spraying remains far cheaper than replacement when the frames themselves are still sound.
Start by collecting two or three quotes based on the same written specification, and confirm exactly what preparation, coats, and warranty are included. That single step prevents most pricing surprises. If you are weighing up other home maintenance decisions, explore more practical guides for straightforward answers you can act on today.