We use a mix primer and a latex top coat for painting the outside. We utilise latex-based stains for solid stains and oil for semitransparent stains. Metal railings are painted with oil-enameled paint. Exterior oil-based paints are no longer used because they were long ago made illegal. Alkyd or oil priming and latex top coats are used for painting the interior (or latex primer as well). The inner top coat may also be made of oil, depending on the circumstance.