What condition does crazing describe?

Crazing refers to the formation of small cracks or fractures that can occur in the existing finish when new paint is applied over it. This phenomenon typically arises from the stresses caused by the interaction between the old, sometimes brittle, finish and the new paint. Crazing can develop as a result of the new paint applied not adhering properly or due to the solvents in the fresh paint causing reactions with the old coating.

In contexts of paint and refinishing, understanding this condition is crucial as it indicates that there might be underlying issues with the existing finish that need to be addressed before repainting. Crazing does not relate to uneven layers, moisture-induced peeling, or blistering due to heat; instead, it is specifically a result of the cracking that occurs under the stress of applying new layers over an inadequate or poorly prepared surface. This knowledge ensures that proper surface preparation and choice of materials are important steps in achieving a durable and visually appealing finish.