How to Spray UPVC Windows?
To spray UPVC windows, you need to clean, sand, prime, and then apply UPVC-specific spray paint in thin coats for a durable finish.
Step-by-Step Procedure To Spray UPVC Windows
Clean the Surface:
Begin by cleaning the UPVC windows thoroughly to remove dirt, dust, and grease. Use a mild detergent or a plastic surface cleaner and a soft cloth. This ensures that the paint adheres properly. Allow the surface to dry completely.
Sand the Surface:
Lightly sand the window frame using fine-grit sandpaper (around 320 grit). Sanding helps create a rough texture, allowing the primer and paint to bond better with the UPVC material. Be careful not to over-sand, as you just want to scuff the surface, not damage it.
Apply Primer:
After sanding, apply a plastic primer specifically designed for UPVC. This step is crucial for ensuring the paint adheres well and lasts longer. Use a spray primer or a brush-on primer, depending on your preference. Apply the primer evenly and allow it to dry for at least 1-2 hours, or according to the manufacturer’s instructions.
Spray the Paint:
Once the primer is dry, it’s time to apply the UPVC-specific spray paint. Hold the spray can about 6-8 inches from the surface and apply the paint in light, even coats. Start spraying at the top of the window frame and work your way down to avoid drips. Allow each coat to dry for 20-30 minutes before applying the next layer. Typically, 2-3 coats are sufficient for a durable finish.
Final Drying:
After the final coat, allow the paint to dry completely for 24 hours. This ensures the paint has fully cured and will last without chipping or peeling.
Why Spray UPVC Windows?
Spraying uPVC windows is mainly done to change the frame colour, refresh old-looking windows, and improve the appearance of a property without replacing the entire window system. A uPVC window frame can often be upgraded with a specialist coating instead of paying for new frames, provided the existing window is still structurally sound.
What Paint is Used To Spray UPVC Windows?
The correct paint for spraying uPVC windows is a specialist uPVC-compatible exterior coating, usually made from acrylic, polyurethane, or modified resin technology. Normal wall paint or standard spray paint should not be used because uPVC is a smooth, non-porous plastic surface, so ordinary paint will not bond properly and can peel, crack, or fade.
How Much Does it Cost To Spray uPVC Windows?
The cost to spray uPVC windows in Ireland is usually around €300–€1,500 for a typical home, depending on the number of windows, window size, colour change, preparation work, and the type of spray coating used.