Cavity brick/concrete block veneer – peeling or flaking paint
Listed under: Exterior, finishes, concrete and cement, concrete blocks, masonry, brick, paint, cladding, walls, moisture, wall cladding, cavity brick or concrete block veneer
Cause
Loss of adhesion due to excess moisture in substrate
Repair
- scrape and/or sand off loose paint and clean until surface is sound; prime; fill joints with exterior grade flexible (polyester) filler; paint with a minimum two coats of paint appropriate for masonry
Cause
Poor initial substrate preparation
Repair
- scrape and/or sand off loose paint and clean until surface is sound; prime; fill joints with exterior grade flexible (polyester) filler; paint with a minimum two coats of paint appropriate for masonry
Cause
Oil-based (alkyd) paint applied over water-based (acrylic) paint
Repair
- scrape and/or sand off loose paint and clean until surface is sound; prime; fill joints with exterior grade flexible (polyester) filler; paint with a minimum two coats of paint appropriate for masonry
Cause
Surface was damp or dirty when painted previously
Repair
- scrape and/or sand off loose paint and clean until surface is sound; prime; fill joints with exterior grade flexible (polyester) filler; paint with a minimum two coats of paint appropriate for masonry
Cause
Dark colours
Repair
- scrape and/or sand off loose paint and clean until surface is sound; prime; fill joints with exterior grade flexible (polyester) filler; paint with a minimum two coats of paint appropriate for masonry
Cause
Paint coating at the end of its serviceable life
Repair
- scrape and/or sand off loose paint and clean until surface is sound; prime; fill joints with exterior grade flexible (polyester) filler; paint with a minimum two coats of paint appropriate for masonry