Most paints solve this problem short term but eventually the stain seeps through the paint work wasting time and money. Permanently block stains with this odourless approach.
All surfaces must be clean, dry and free from anything that will interfere with the adhesion of the materials to be applied. Remove loose and failing material by scraping or brushing with a stiff bristle brush to a sound edge. Feather sound edges with a fine grade abrasive paper. Prior to painting, the moisture content should not exceed 18%. Remove all dust. Remove all visible signs of organic growth and treat the areas with Zinsser Mould Killer in accordance with the manufacturer’s instructions. Allow to dry.
For areas with remaining sound paint clean down with Zinsser Universal Cleaner & Degreaser to remove any contaminants. Rinse thoroughly with clean water to remove all residues. Allow to dry.
Degrease with methylated spirit, changing the cloths regularly. Fill any cracks and small surface defects with a suitable filler as appropriate in accordance with the manufacturer’s instructions. Allow to dry. Rub down with a fine grade abrasive paper. Remove all dust. Allow to dry. Patch prime all bare and filled areas with one coat of AllCoat (Solvent Based) Primer and Finish in accordance with the manufacturer’s instructions. Allow a minimum drying time of 2 hours in normal drying conditions. Bring forward patch primed areas with one coat of AllCoat (Solvent Based) Primer and Finish. Allow to dry. Prime all areas to be decorated with one full coat of AllCoat (Solvent Based) Primer and Finish. Allow a minimum drying time of 2 hours in normal drying conditions.
Decorate with one or two full coat of AllCoat (Solvent Based) Primer and Finish in accordance with the manufacturer’s instructions.
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