Paint incompatibility

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Description

Causing adhesion loss from a top coat of latex over many layers of old alkyd or oil based paint.

 

 

 

 

Probable Cause

• Usually caused by painting over 3 or more layers of alkyd or oil based paint with a latex top coat.

• The old paint has become brittle and will lift off the surface.

• Inadequate surface preparation.

• Using a not recommended top coat.

 

Solutions

• Remove all the loose paint by scraping or wire brush for masonry.

• Power washing is recommended for large areas.

• Feather sand edges for smooth appearance and rinse thoroughly with a hose.

• All bare areas will need spot priming.

 

Primers & Interior Finishes

• Priming is essential for better adhesion, sheen uniformity, mildew control and durability.

• Slow drying due to coolness or humidity, prevents the surfactants from evaporating and a blotchy sometimes glossy residue appears.

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