Use automotive paint. We use DuPont Centari. You can brush it on if the weather is mild about 70 degrees F. The brushes can be cleaned with a mixture of gasoline and denatured alcohol - about 2/1. Read the manufacturer's directions on the label. Do it in the fall when the air is dry. Best use a vapors mask. Centari cost 90 dollars a gallon wears like the paint on your car. Jim