How to paint friable exterior walls

Friablle : chalky walls-exterior
What you will need:

Painting over friable and chalky external walls can be challenging and most paints simply flake and peel away. Here's our tried and tested method of patching and priming.

1
Surface Preparation

All surfaces must be clean, dry and free from anything that will interfere with the adhesion of the materials to be applied. Remove loose material by scraping or brushing with a stiff bristle brush to a sound edge. Prior to painting, the moisture content should not exceed 12%. 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.

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.

2
Patch priming & Bring Forward

Patch prime all bare and filled areas with Bulls Eye® 1-2-3 Primer Sealer in accordance with the manufacturer’s instructions. Allow a minimum drying time of 1 hour in normal drying conditions. Bring forward patch primed areas with Bulls Eye 1-2-3® Primer Sealer. Allow to dry.

3
Priming

Prime all areas to be decorated with one full coat of Bulls Eye® 1-2-3 Primer Sealer in accordance with the manufacturer’s instructions. Allow a minimum drying time of 1 hour in normal drying conditions.

4
Decoration

Decorate with two full coats of AllCoat® Exterior Satin or Gloss in accordance with the manufacturer’s instructions. Allow a minimum drying time of 1 hour between coats in normal drying conditions.