Table of Contents
- What You’ll Need Before Windows Are Sprayed
- Step-by-Step: How Windows Are Sprayed
- uPVC Window Spraying Cost: What Affects the Price
- The Best Paint for uPVC Windows
- uPVC Restoration vs Replacement: Which Makes Sense?
- Safety and Protecting Your Home During Spraying
- Common Mistakes to Avoid
- Conclusion
- Frequently Asked Questions
Last Updated: September 27, 2026
What You’ll Need Before Windows Are Sprayed
Having the right kit ready before anyone picks up a spray gun is what separates a clean, factory-style finish from a messy one. When windows are sprayed, the prep materials matter as much as the coating itself. Astral Coatings Ltd. has spent over 30 years on interior and exterior decorating, so we know how quickly a job stalls when something basic is missing.
Gather these before you start:
The Health and Safety Executive guidance on respiratory protective equipment is worth a read before you choose a mask, because solvent-based coatings need proper filtration.
One common mistake is buying a cheap spray unit and expecting a professional result.
Step-by-Step: How Windows Are Sprayed
Spraying uPVC windows follows three stages: prep and mask, clean and repair, then coat. Rushing any stage shows up in the finish, usually as drips, peeling or a patchy sheen.
Step 1: Preparation and Masking
Masking protects everything you don’t want coated. Cover glass, handles, hinges, seals and nearby brickwork with tape and film. A common mistake is skipping the seals, which then stiffen and crack once paint dries on them.
Step 2: Cleaning and Minor Repairs
uPVC holds a lot of grime. Wipe frames down with a degreaser, then sand lightly to give the surface a key. Fill any small scratches or gaps with a suitable filler and let it cure fully. If you skip this, the coating can lift within months.
Step 3: Applying the Coating
Apply a bonding primer first, then two or three thin topcoats. Thin coats beat one heavy coat every time. Keep the gun moving and overlap each pass by around half.
uPVC Window Spraying Cost: What Affects the Price
There’s no single figure for uPVC window spraying cost. Pricing depends on the number of windows, their size, the condition of the frames and how much masking is needed.
Several factors move the price up or down:
- Total window count and surface area
- Whether frames are weathered or damaged
- Access, such as upper floors or tight spaces
- Colour choice and number of coats required
- Whether doors or a conservatory are included
For an accurate quote, it’s best to ask a specialist to assess the job directly rather than rely on a rough online estimate.
The Best Paint for uPVC Windows
The best paint for uPVC windows is a flexible, uPVC-specific coating with a bonding primer. Standard paint cracks as the plastic expands and contracts with temperature.
The British Standards Institution on paint and coating standards sets out performance expectations for exterior coatings. Matching your product to those standards protects the finish.
uPVC Restoration vs Replacement: Which Makes Sense?
For most frames that are structurally sound, uPVC restoration beats replacement on cost and disruption. Replacement means new units, waste and days of work.
Safety and Protecting Your Home During Spraying
Safety comes down to ventilation, protection and containment. Spray mist travels further than most people expect, so cover floors, worktops and furniture before you begin.
The HSE guidance on safe handling of solvents explains why solvent-based products need careful ventilation. For indoor work, this matters even more.
Common Mistakes to Avoid
Most failed spray jobs trace back to a handful of avoidable errors.
Conclusion
Refreshing tired uPVC frames is far less disruptive than a full replacement.
Astral Coatings Ltd. brings over 30 years of experience, a meticulous three-step spraying process and durable, weatherproof finishes to every job. We protect your surrounding surfaces and deliver optimal coating thickness for long-lasting results.
Get started with Astral Coatings Ltd. and give your windows a factory-fresh finish without the cost of replacement. Contact us on WhatsApp for a quote.
Frequently Asked Questions
How long do sprayed uPVC windows last?
The lifespan of a spray finish on uPVC depends on the quality of the coating, surface preparation, and exposure to weather. Regular cleaning with warm soapy water helps maintain the finish.
Is it cheaper to spray uPVC windows or replace them?
Spraying is usually cheaper than full replacement. Replacement involves new frames, glazing units, labour, and disposal costs, whereas spraying refreshes the existing frames. The exact uPVC window spraying cost depends on the number of windows, their size, condition, and access requirements. Spraying is often chosen when frames are structurally sound but faded or discoloured.
Can you spray paint uPVC windows yourself?
DIY spraying is possible but rarely achieves a professional finish. Professional equipment, correct surface preparation, and the right coating are essential for durability. Without proper masking, you risk overspray on glass, brickwork, and neighbouring surfaces.
Does spraying uPVC windows add value to a property?
A fresh, uniform finish can improve kerb appeal and make a property look better maintained, which may support its marketability. While spraying is not a structural upgrade, it can be a cost-effective cosmetic improvement.