Surfaces must be clean, dry, and free from grease, dirt, oil, wax, rust, all loose material and surface contamination. Remove all loose material from previously painted surface with a steel brush. Wash moldy surfaces with Homeenpoisto Mould Removal solution according to instructions. Treat rusting metal parts like nail heads with Rostex Super Metal Primer. Ensure that existing glossy, gloss painted and filled surfaces are thoroughly flatted down. Ensure that all surfaces are thoroughly prepared prior to priming and painting. Make sure that timber cladding, weatherboarding and timber glazing beads, etc. are adequately fastened with non-corrosive fixings.
Note: Discoloration of paint especially noticeable within light colours may occur over knots and resinous areas present in the wood as a result of temperature and humidity fluctuations. Particular attention with regards to preparation should be given to wood such as Oak, Teak, Cedar, Douglas Fir, Mahogany and Idigbo, etc., which contain oil and water-soluble tannin which may impair the drying, hardening or adhesion of surface coatings and discolour the finished surface.