Also, follow the paint’s technical data sheet or label for recommended thinning parameters. “If it says, ‘Do not thin,’ don’t thin it,” Otto says.

A high-quality paint brush is essential when tackling any DIY painting or staining project. Here are our recommendations for the best paint brushes to buy.

Because you know our rule, a thin paint will stick to a thick paint. The liquid white is only there to thin it. Pull the brush in one direction. Load it full, let's go up in here.