Case 3

Introduction

Type of Building: Public residential flats

Blistering is the formation of bubbles resulting from localized loss of adhesion and lifting of the paint film from the underlying surface.

Blistering can be a result of moisture, poor surface preparation such as failure to remove chalk residue, hard primer or application of paint film on worn surfaces [1-4]. Bubbles result from localized loss of adhesion and lifting of the paint film from the underlying surface.

It is the formation of hollow projections underneath the paint film. It is usually known as the first stage in the development of peeling. This is because when blisters are form, they burst, the paint peels and fails.

There are a number of types of blistering: moisture and temperature blistering.