To get the best results, ensure surfaces to be painted are sound, clean, and dry (new surfaces particularly must be fully dry). Remove all loose and defective coatings, if necessary, stripping back to bare wood. Special precautions should be taken during surface preparation of pre-1960s paint surfaces over wood and metal as they may contain harmful lead.

Exterior: Remove and treat any mould, algae, lichen, or moss with Weathershield Multi-Surface Fungicidal Wash*. Remove defective glazing material, clean the rebates and any loose or open joints. Replace any rotten wood and troublesome knots with new timber. Thoroughly rub down previously painted surfaces, using ‘wet flatting’ methods where possible, then wipe off with a damp, lint free cloth. Apply 1 or 2 coats of an appropriate knotting solution to treat any remaining knots in wood. Any surface defects should be filled with the appropriate Polycell product. Prime then Undercoat all new or bare wood with 2 coats of Dulux AquaMax Primer Undercoat, including any new or replacement beading.

Prime any new bare metal with appropriate Dulux Trade Metalshield Primer. Then undercoat with Dulux AquaMax Primer Undercoat. Fill any surface defects, open joints etc. and
replace any missing glazing material. New joinery is often factory primed using a satin basecoat (also called a dual-purpose primer). These materials quickly erode when left exposed and may need to be re-primed.