Lightweight aerated concrete – bubbling or blistering paint

Cause

Loss of adhesion due to excess moisture in substrate

Repair

  • ensure surface is dry; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Cause

Poor initial substrate preparation

Repair

  • ensure surface is dry; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Cause

Oil-based (alkyd) paint applied over water-based (latex) paint

Repair

  • ensure surface is dry; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Cause

Surface was damp or dirty when painted previously

Repair

  • ensure surface is dry; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Cause

Dark colours increasing surface temperatures 

Repair

  • ensure surface is dry; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Cause

Water-based paint coat exposed to moisture before paint has fully dried

Repair

  • ensure surface is dry; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint