It is possible to paint vinyl siding with latex urethane paint intended for exterior use. A color the same shade or lighter than the existing siding color is best, as it reduces the risk of warping due to heat absorption.
The ideal time for painting vinyl siding is on an overcast day with low humidity and mild temperatures. Scrubbing the siding with cleaner and a soft-bristled brush helps remove debris, chalk, mold and mildew for a smooth, professional look on the painted siding. A paint sprayer or roller works for applying the latex paint. A brush is necessary for corners or edges. Two coats of paint is usually enough, but an additional coat is sometimes necessary for full coverage.