What can I add to a can of high-gloss latex paint to eliminate pinholing?
Just adding something to paint may or may not eliminate pinholing. If the cause of the pinholing is that the paint drying too fast, then adding up to 1 pint of water per gallon may help. Another cause of pinholing is excessive film build, which causes solvent pop. The top layer of paint dries faster than the underside and this traps the solvents in the paint. As the solvent attempts to escape from the coating, it first causes a small blister and then the blister pops leaving a pinhole. By measuring wet film build with a wet film gauge, you can determine if you are applying too much paint.
