Brush, roller, airless spray,conventional spray. STIR THOROUGHLY BEFORE USE. Seal all new or bare surfaces with a thinned coat of Weathershield Smooth Masonry Paint (up to 1 part clean water to 5 parts paint). The normal finishing process is 2 full coats of Weathershield Smooth Masonry Paint, but on previously painted surfaces in good condition, where similar colours are used, 1 coat may be sufficient. In normal conditions two coats of Weathershield Smooth Masonry Paint properly applied to the substrate in accordance with the instructions will perform satisfactorily for up to 15 years giving good colour stability (as part of BBA certificate 97/3383).