Painting over exterior mildew can be tricky, especially when mould and mildew stains bleed through standard paints. Zinsser Cover Stain® offers a reliable solution to this common problem by permanently sealing stains, while Zinsser AllCoat® Exterior provides a strong, mould-resistant finish. Read on to find out how to paint over mould and keep exterior surfaces looking their best.
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. 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.
In 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. Fill any cracks and small surface defects with a suitable filler in accordance with the manufacturer’s instructions. Allow to dry. Rub down with a fine grade abrasive paper. Remove all dust.
Prime all stained, bare and filled areas with one coat of Cover Stain® in accordance with the manufacturer’s instructions. Allow a minimum drying time of two hours in normal drying conditions.
Decorate with two full coats of AllCoat® Exterior Satin or Gloss in accordance with the manufacturer’s instructions. Allow a minimum drying time of one hour between coats.
Yes. Remove all visible signs of organic growth and treat the areas with Zinsser Mould Killer. Patch prime all bare and filled areas with Bulls Eye® 1-2-3 and bring forward patch primed areas. Allow to dry.
Prime all areas to be decorated with one full coat of Bulls Eye® 1-2-3 and decorate with two full coats of AllCoat Exterior.
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Computershare Governance Services
The Pavilions
Bridgwater Road
Bristol
BS13 8FD
Company number: 04503854
Tor Coatings Ltd
21 White Rose Way
Follingsby Park
Gateshead
Tyne & Wear
NE10 8YX