To obtain flawless results, the surfaces to be painted are required to be structurally sound, clean, dry and free from dirt, dust or any other surface contaminants.
- Remove all paint that is old, flaking and is substandard either by sanding or with the use of a paint scraper
- Extra care needs to be taken during the surface preparation of pre-1960s paint surfaces as they could possibly contain harmful levels of lead
- If it is required, wash the surface to remove any dirt, grease and dusty or remnants of powdery residues
- To remove any organic growth including mould, fungal, algal or lichen growths, then treat the area with fungicidal solution, such as Sandtex Fungicidal Wash
- Cleanse with clean water and leave to dry
- Any defects in the surface, such as cracks and small holes, need to be be repaired, plugged and sealed with an appropriate filler and then sanded smooth
- If necessary, rub down surfaces and then wipe off with a damp, lint-free cloth to remove any remnants of dust
- It is advisable to use a primer, for instance Crown Trade Full Undercoat to help the paint cling firmly to the surface
If being applied to a wooden surface, then the additional steps need to be applied:
- Wooden products that have oils/extractives require cleaning with methylated spirits, frequently changing the face of the cloth, and treat any knots with two coats of fresh knotting
- New wooden surfaces will need to be lightly sanded to provide a key for a suitable undercoat to adhere to
- Any bare wood will need to be primed with a suitable wood primer followed by an undercoat before the application to ensure a strong bind to the surface
If being applied to a metal surface, then the following additional steps need to be applied:
- If being applied to new metal, excluding galvanised surfaces, then lightly abrade the surface, rinse clean followed by a coating of a metal primer and than a coating of Crown Trade Full Undercoat
- On new bright galvanised surfaces, degrease the surface thoroughly and then pre-treat with a T wash solution, followed by applying a suitable metal primer followed by an appropriate undercoat
- Non ferrous metals require a coat of a suitable metal primer followed by an undercoat to help Crown Trade Full Gloss adhere to the surface
- Ferrous metals need to be stripped back to their original state with the removal of all surface rust and millscale, then apply a single coat of a suitable metal primer followed by a coating of undercoat within the same working day
- If the metal surface has been previously decorated, ensure any rust is removed, the edges of the paint are feathered, and the area washed clean and finally wet abrade the surface, rinse and allow to dry. Then apply one coat of a metal primer followed by a single coat of undercoat to aid with adhesion