Lightweight aerated concrete – peeling or flaking paint

Lightweight aerated concrete panels/blocks –peeling or flaking paint

Causes

Weathering UV light exposure – darker colours are more prone to fading 

Loss of adhesion due to excess moisture in substrate

Poor initial substrate preparation

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

Surface was damp or dirty when painted previously

Dark colours

Paint coating at end of serviceable life 

Listed under: Exterior, finishes, concrete and cement, concrete blocks, paint, cladding, walls, wall cladding, lightweight aerated concrete panels or blocks

Cause

Weathering UV light exposure – darker colours are more prone to fading 

Repair

  • wash walls if necessary; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

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Cause

Loss of adhesion due to excess moisture in substrate

Repair

  • wash walls if necessary; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Back to top

Cause

Poor initial substrate preparation

Repair

  • wash walls if necessary; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Back to top

Cause

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

Repair

  • wash walls if necessary; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Back to top

Cause

Surface was damp or dirty when painted previously

Repair

  • wash walls if necessary; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Back to top

Cause

Dark colours

Repair

  • wash walls if necessary; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Back to top

Cause

Paint coating at end of serviceable life 

Repair

  • wash walls if necessary; sand and repaint, applying a minimum two coats of semi-gloss or high gloss acrylic paint

Back to top