Paint Incompatability

Paint incompatibility can cause loss of adhesion where many old coats of alkyd or oil-based paint receive a latex topcoat.


What Causes It?

Paint IncompatibilityWhen water-based latex is painted over more than three or four coats of old alkyd or oil-based paint, the old paint may "lift off" the substrate.


How to Solve It

Repaint the surface using another coat of alkyd or oil-based paint.

Alternatively, you can completely remove the existing paint and prepare the surface—cleaning, sanding, and spot-priming where necessary—before repainting with a top-quality latex exterior paint.

Note: Images provided by The Rohm & Hass Paint Quality Institute.

Banjamin Moore





Specific Painting Problems

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