What Does It Mean When Plaster Is Blown

Plaster blows because it either has no, or has lost its, adhesion with the surface it has been applied to. This can be for a variety of reasons the most common of which are 1. The surface its being applied to is very porous.

Does it matter if plaster is blown?

It can be that hollow sounding plaster is absolutely nothing to worry about, as patches can lose their bond and be hollow very soon after application. If these areas are not that great an area, and anchored every now and again by adhered plaster, then there is often no problem.

What is the cause of blown plaster?

When damp seeps through your plaster it can cause it to deteriorate over time. This can cause the plaster to blow, crack and crumble. The main reason for plaster blowing, is that it has lost adhesion to the surface it was applied to.