Can You Paint uPVC Windows? (2026 Guide)

uPVC windows can absolutely be painted — and tens of thousands of UK homes are recoloured every year. The catch is how you paint them. Brush-on uPVC paint from a tin lasts 12–18 months at best before chalking, flaking around handles or peeling at the gaskets.

Professional spraying using a 2K polyurethane system gives a factory-smooth finish that lasts 10–15 years with a written guarantee — and costs a fraction of replacement. Our uPVC window & door spraying page walks through the full process.

Brush-on uPVC paint (Zinsser Allcoat, Hammerite Garage Door, Rust-Oleum) is a household paint reformulated to grip plastic. It rolls and brushes easily, but the finish carries visible brush marks, fails around moving parts and is not guaranteed by the manufacturer for outdoor uPVC longer than 12 months.

2K polyurethane spraying is the same chemistry used on cars. A bonding primer is applied first, followed by two to three coats of pigmented top-coat. Once cured (about 7 days) the coating is harder than the uPVC itself, UV-stable, and resistant to acid rain, frost and pressure-washing.

If you only need windows to look tidy for a year — brush paint is fine. For anything else, spray.

Any colour, full stop. The most popular 2026 choices in the West Midlands:

Anthracite grey (RAL 7016) — the runaway favourite. Modern, smart and pairs with red brick or render. See our anthracite grey vs agate grey comparison for the subtle differences.

Jet black (RAL 9005) — a strong heritage look on bay windows and period properties.

Agate grey (RAL 7038) — a softer mid-grey that suits lighter brickwork and rendered homes.

Chartwell green / sage — heritage greens that work beautifully on cottages and 1930s semis.

Cream / Farrow & Ball off-whites — for homeowners who want to refresh tired yellowed white frames without going dark.

Two-tone schemes (e.g. anthracite outside, white inside) are also possible — the inside face can be left white or sprayed to match.

80% of the result is in the prep. A sprayed window only lasts a decade because of what happens before the colour goes on.

Mask everything: glass, gaskets, brickwork, sills, hardware. Done with film and trade-grade tape, not bin bags.

Degrease: every frame wiped with a panel-wipe solvent to remove silicone, dirt and weathering residues.

Abrade: the surface is lightly keyed with abrasive pads so the primer has something to grip.

Adhesion promoter: a specialist primer formulated for uPVC is sprayed on first — this is the single biggest difference between DIY and professional work.

Top-coat: two to three coats of 2K polyurethane in the chosen colour and sheen (satin is standard).

A correctly sprayed uPVC window typically lasts 10–15 years before any noticeable fade. Our work is backed by a written 10-year guarantee against peeling, flaking and cracking. Full deep-dive: how long does uPVC spraying last?

Compare that with DIY brush paint (12–18 months) or a full uPVC window replacement (10-year frame warranty) and the maths is clear.

Spraying a typical 3-bed semi (8–10 windows): £900–£1,800 fully finished.

Replacing the same windows: £4,500–£9,000+ in like-for-like uPVC.

Spraying is roughly 80% cheaper and completed in 1–2 days with no scaffolding, no building work and no waste sent to landfill. Full pricing here: how much does uPVC spraying cost?.

Can I paint uPVC windows myself? You can, but the finish rarely lasts more than a year and the warranty on most brush-on uPVC paints is 12 months at most.

Can you spray white uPVC windows grey? Yes — colour-changing white to anthracite, black or sage is our most common job.

Will it affect the window seals? No. All gaskets and rubbers are masked. The coating only touches the frame.

Can you spray windows in winter? Yes. We work year-round; 2K coatings cure reliably in cool temperatures with the right hardener.

Is it guaranteed? Every job carries a written 10-year guarantee. See real customer projects on our reviews page.