Why Does Interior Paint Crack And Peel
Cracks in paint can lead to flaking and failure of the paint.
Photo courtesy of The Paint Quality Institute
Dry paint sometimes cracks or flakes due to aging or improper application. Learn how to fix the problem.
Cracks in paint can start off small, but will worsen over time if they re not fixed. In its early stages, the problem appears as hairline cracks. Later, the paint begins to flake off.
What Causes Paint Cracking or Flaking.
The use of low-quality paint, resulting in inadequate adhesion and flexibility
Oil-based paint applied over latex paint
Paint was spread too thin during application
Poor surface preparation, especially when the paint is applied to bare wood without priming
Paint drying too fast due to environmental conditions
Paint becoming brittle with age, failing to expand and contract with temperature and humidity changes
Extreme cracking, sometimes called alligatoring, caused when a second or third coat of paint is applied before the previous coat dries completely, or when the undercoat is incompatible with the finish coat
How to Fix Cracked or Flaking Paint
If the cracking does not go down to the substrate, remove the loose or flaking paint with a scraper or wire brush, sand the area to feather the edges, prime any bare spots, and repaint the surface
If the flaking occurs in multiple layers of paint, you may need to use a filler
If the cracking goes down to the substrate, remove all of the paint by scraping or using a heat gun, sand the surface until smooth and even, prime, and repaint with a quality latex paint
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