Ensure the timber surface is suitably prepared, clean and dry, with dust, dirt, wax and grease removed, and allowed to acclimatise to its end-use environment. Moisture content of the timber should not exceed 16% prior to coating with Sikkens Rubbol BL Primer.
Bare or New Timber
- Degrease any exposed bare timber surface by wiping with a lint-free cloth dampened in a suitable solvent
- Allow solvent to evaporate fully before over-coating
- Any resinous deposits should be removed with a scraper
- The use of knotting agents is not recommended as they are not always fully effective in 'sealing in' resin, and adhesion of coatings can be impaired
- If using a wood filler, ensure that it is one that is specifically designed for use with timber, as general or all purpose fillers may not be suitable
- Only use non-ferrous screws, nails and fixings
Previously Coated Timber
- Base stained joinery should be denibbed using a fine grade nylon abrasive pad or a fine grade (P240 or finer) wet or dry silicon carbide abrasive paper, in the direction of the grain, ensuring not to break through the surface coating
- Remove any remaining sanding dust
- Where necessary, fill with tinted putty
- Where there is localised damage, or deterioration has occurred as a result of exposure of the factory coating for longer than 3 months, affected areas should be thoroughly sanded back to a sound substrate
Decayed timber must be removed and replaced, cutting at least 25mm into sound timber.