We have an 1800 c house and waving to paint the exterior windows sills which are stone. What’s the best paint to buy from you?
Assuming the stone is bare, it is porous, clean, dry, sound and prepared as detailed in the technical data sheet we can recommend Zinsser Allcoat Exterior (Water based).
This can be mixed to many RAL, NCS or BS colours in a matt, satin or gloss finish.