Plywood cladding – peeling or flaking paint/stain
Listed under: Exterior, timber and wood-based, plywood, cladding, walls, moisture, wall cladding, plywood sheets or planks
Cause
Thermal expansion and contraction of timber substrates
Repair
- scrape and/or sand off loose paint; sand bare timber until the surface is sound; prime; fill joints with putty or exterior grade flexible (polyester) filler; paint with a minimum two coats of semi-gloss or high gloss acrylic paint
Cause
Loss of adhesion due to excess moisture in substrate
Repair
- scrape and/or sand off loose paint; sand bare timber until the surface is sound; prime; fill joints with putty or exterior grade flexible (polyester) filler; paint with a minimum two coats of semi-gloss or high gloss acrylic paint
Cause
Poor initial substrate preparation
Repair
- scrape and/or sand off loose paint; sand bare timber until the surface is sound; prime; fill joints with putty or exterior grade flexible (polyester) filler; paint with a minimum two coats of semi-gloss or high gloss acrylic paint
Cause
Oil-based (alkyd) paint applied over water-based (acrylic) paint
Repair
- scrape and/or sand off loose paint; sand bare timber until the surface is sound; prime; fill joints with putty or exterior grade flexible (polyester) filler; paint with a minimum two coats of semi-gloss or high gloss acrylic paint
Cause
Surface was damp or dirty when painted previously
Repair
- scrape and/or sand off loose paint; sand bare timber until the surface is sound; prime; fill joints with putty or exterior grade flexible (polyester) filler; paint with a minimum two coats of semi-gloss or high gloss acrylic paint
Cause
Dark colours
Repair
- scrape and/or sand off loose paint; sand bare timber until the surface is sound; prime; fill joints with putty or exterior grade flexible (polyester) filler; paint with a minimum two coats of semi-gloss or high gloss acrylic paint
Cause
Timber swelling/shrinkage caused by moisture absorption into timber end grain if joints were not adequately primed before installation
Repair
- scrape and/or sand off loose paint; sand bare timber until the surface is sound; prime; fill joints with putty or exterior grade flexible (polyester) filler; paint with a minimum two coats of semi-gloss or high gloss acrylic paint
Cause
Coating at the end of its serviceable life
Repair
- scrape and/or sand off loose paint; sand bare timber until the surface is sound; prime; fill joints with putty or exterior grade flexible (polyester) filler; paint with a minimum two coats of semi-gloss or high gloss acrylic paint