How to paint rust-stained surfaces | Zinsser UK
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How to paint rust-stained surfaces

This guide explains how to deal with rust stains and prevent them from seeping through new paint work.

Steps

1. Surface Preparation / Priming

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 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. 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.
Thoroughly 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. Patch prime all 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. Bring forward patch primed areas with one coat of Cover Stain® . Allow to dry. Apply one full coat of Cover Stain® overall and allow to dry.

2. Decoration

Decorate with two full coats of Perma-White® Interior Matt/Satin/Semi-Gloss in accordance with the manufacturer’s instructions. Allow a minimum drying time of two hours between coats.
For exterior projects 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.

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