Concrete wall – peeling or flaking paint
Listed under: Exterior, finishes, concrete and cement, paint, cladding, walls, moisture, wall cladding, solid concrete wall
Cause
UV deterioration
Repair
- scrape and/or sand off loose paint; clean until surface is sound. Allow to dry thoroughly then repaint with a system suitable for concrete.
Cause
Loss of adhesion due to excess moisture in substrate
Repair
- scrape and/or sand off loose paint; clean until surface is sound. Allow to dry thoroughly then repaint with a system suitable for concrete.
Cause
Poor initial substrate preparation
Repair
- scrape and/or sand off loose paint; clean until surface is sound. Allow to dry thoroughly then repaint with a system suitable for concrete.
Cause
Oil-based (alkyd) paint applied over water-based (acrylic) paint
Repair
- scrape and/or sand off loose paint; clean until surface is sound. Allow to dry thoroughly then repaint with a system suitable for concrete.
Cause
Surface was damp or dirty when painted previously
Repair
- scrape and/or sand off loose paint; clean until surface is sound. Allow to dry thoroughly then repaint with a system suitable for concrete.
Cause
Dark colours
Repair
- scrape and/or sand off loose paint; clean until surface is sound. Allow to dry thoroughly then repaint with a system suitable for concrete.
Cause
Paint coating at end of serviceable life
Repair
- scrape and/or sand off loose paint; clean until surface is sound. Allow to dry thoroughly then repaint with a system suitable for concrete.