Cracking and flaking | bascopaints

What is it?

Large sized cracking and simultaneous flaking of multiple layers of coatings. The presence of a friable powdery surface under the flaking paint.

Possible Causes

Multiple layers of paint 3 and more painted on previously chalking paint or gypsum type plaster. The multiple layers of coatings contribute to an increased surface tension of the whole system resulting in breakaway of the subsequent layers from the weaker/most friable layer.
Thick coatings subject to extreme temperature changes and subsequent expansion and contraction forces.

How Can I Fix This Problem

Remove all loose and flaking paint.
Remove the friable chalk by scrubbing with stiff nylon brush and rinse with water. High pressure equipment can also be used. Check for any remaining chalk after the surface had thoroughly dried. Repeat the cleaning process if powder is still present.
If chalk persists, recoat with oil based primer and recoat with appropriate quality top coat.

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