Intergrain UltraPrep™ Timber Cleaner is a high strength timber treatment that contains oxalic acid and citric acid, both naturally occurring, bio-degradable acids. Use Intergrain UltraPrep Timber Cleaner to remove surface contaminants prior to coating, the cleaner will help to restore and prepare weathered, grey, rust or tannin stained, mould or mildew affected timber to a clean appearance ready for coating.
Cleaning materials
Water
Application Tools
Other
Exterior use only. Not suitable for interior use.
Wear waterproof gloves and safety glasses.
Avoid contact with painted, glass, concrete or metal surfaces and vegetation. Protect areas not to be cleaned.
May be corrosive to metals. Rinse off thoroughly if contact occurs.
Remove surface dirt by sweeping or washing down with water.
Shake Intergrain UltraPrep Timber Cleaner thoroughly.
Mix one part Intergrain UltraPrep Timber Cleaner to four parts water in a plastic container. For severely stained surfaces a stronger solution or repeat applications may be necessary. Tannin rich timbers may also require repeat applications; wash until the water used to rinse off is clear.
Wet the timber surfaces to be cleaned with water.
Apply Intergrain UltraPrep Timber Cleaner mixture generously to the timber with a stiff bristle brush. Scrub the timber vigorously. Spot cleaning should be avoided to prevent patchy results.
Leave mixture on the timber for 10-15 minutes. If necessary, apply more mixture to keep timber damp throughout this period, do not allow mixture to dry.
Rinse off surface thoroughly using maximum pressure from a garden hose or using a high pressure water cleaner (recommended for large areas or badly discoloured timber). Failure to thoroughly rinse off the mixture may result in timber discolouration under clear finishes.
Note: After cleaning, some timber species will appear lighter due to loss of water soluble extractives. Richer colour is generally restored on application of the finish.
