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Back to interior problems...
Excessive bubbling that doesn't flow out and leaves crates or depressions in the paint film.

Foaming/Cratering Causes - using a roller cover with incorrect nap length. Painting too soon after shaking. Rolling paint too fast or excessively. Using old paint. Painting over unprimed porous surfaces. Painting when the temperature is too hot, over 90°F.

Foaming/Cratering Solutions - properly prime porous surfaces or new work. Use the proper nap length roller cover or a high quality brush. Avoid excessive rolling or brushing. After shaking, allow bubbles to dissipate before painting. Avoid painting when temperatures are above 90°F.

Primers and Interior Finishes - Priming is essential for better adhesion, sheen uniformity, mildew control and durability. Ask your Muralo dealer for the best Muralo interior paint for your project, in the color and sheen of your choice.