what is the best paint for the outside of my garage it is made of uPVC and will I need an undercoat? thank you.
Assuming the areas to be painted are not a roof, the UPVC is clean, dry, sound and prepared as detailed in the technical data sheet, you could consider the Kolorbond uPVC Painting Kits.
This can be mixed to many RAL, NCS or BS colours in a satin finish.