You might be tempted to buy a tin of paint and brush paint your UPVC units but doing so won’t achieve the look you have in your head. Spray painting is much better. Here are three reasons why you should put the brush down and choose spray paint instead.
This one’s obvious. When you paint plastic with a brush, this leaves behind brush marks which you can’t eradicate. You can’t eradicate them because there’s nothing to smooth the paint into; plastic doesn’t absorb paint as wood does.
A similar problem manifests itself if you use a roller. Using a roller on UPVC brings texture to the paint and can introduce air bubbles.
Both brushing and rolling are types of ‘contact painting’. In contrast, spray painting is no contact, because it is sprayed on and never agitated. The paint is sprayed in layers, creating a smooth, factory-grade finish without imperfections.
The durability of a paint finish is determined by the thickness of the coats and the consistency of them. When you brush paint a surface, even if it looks even, the finish will be thinner and thicker in places. With spray paint, the coats are even.
Another determining factor in the durability of the finish is the type of paint used. Solvent-based spray paint is ALWAYS best for UPVC because it has a special hardener that dries rock hard on plastic. Brushing paints aren’t as hard generally.
There is a reason window and door manufacturers don’t brush paint their units: because doing so doesn’t achieve a flawless finish.
If the aim with changing the colour of your UPVC windows and doors is to make them appear as though they were originally installed in the new colour, brushing them isn’t going to give you the look you want.
UPVC units that are spray painted by a professional like us look so good they appear to be brand new factory-fit units. When painted on the inside of the property and on the outside, the effect is so convincing no one will know you have had them painted unless you tell them. This is the key benefit of spray painting: it achieves a factory-grade finish. Brushing is a poor alternative because the results just aren’t as good.