This summer house required extensive jet wash cleaning prior to paint application and was left to dry for a number of days (using an oil/solvent-based product would require a longer drying period). Zinsser All Coat Exterior Satin (water-based) was my recommended product for a mould resistant paint offering supreme protection to all exterior surfaces, colour chosen by customer was RAL 7038. The window bars and frames were painted by brush, as was the 1st coat on the roof. All glass panels were masked and then panels sprayed using a Graco Easymax II with a 517 tip (24" extension pole for roof), a further spray coat over the entire structure ensured a good 2 x coat coverage. Window bars were brushed for a 2nd coat after removal of masking, whole process (excluding drying time) complete in just over 1.5 days.