Poor Galvanized Metal Adhesion: Paint that has lost its adhesion to a galvanized metal substrate.
Patterned cracking in the surface of the paint film resembling the regular scales of an alligator.
Bubbles resulting from localized loss of adhesion and lifting of the paint film from the underlying surface.
Formation of fine powder on the surface of the paint film during weathering, which can cause color fading. Although some degree of chalking is normal, desirable way for a paint film to wear, excessive film erosion can result in heavy chalking.
Black, gray or brown areas on the surface of paint or caulk.
Nailhead Rusting: Reddish-brown stains on the paint surface.
Loss of paint due to poor adhesion. Where their is a primer and a top coat, or multiple coats of paint, peeling may involve some or all coats.
Brownish or tan discoloration on the paint surface due to migration or tannins from the substrate through the paint film. Typically occurs on 'staining woods,' such as redwood, cedar and mahogany, or over painted knots in certain other wood species.