Paints, Coatings & Wall Coverings Flashcards
Substrate
The surface underneath a material that holds and supports it
Alkyd
A synthetic resin used in oil-based paints.
Primers
A performance-improving base coat for paint. It’s job is to hold the finish costs to the surface, preventing them from soaking into the surface and causing the gloss level to flash ore produce an inconsistent top coat.
Flash
Uneven gloss, visual texture, or color resulting from an unsealed substrate or failure to maintain recommended temperature during dry time
Chalking
When paint deteriorates it will sometimes release a white, powdery substance onto its surface. This action is called chalking and is sometimes desired on white exterior paint as the chalking will rinse away in the rain taking dirt with it.
Checking
- Small cracks in the paint film usually caused when the paying dries out over time and loses it elasticity.
- A split in wood along the direction of the grain, caused by drying of the wood.
Alligatoring
A pattern of small surface cracks or checking that may result in incompatibility of paint and base coat. This also refers to a decorative effect imitating this kind of damaged surface.
Name the two categories of primer
Sealers and underbodies
Bleed
Pigment spreading beyond the design outline or one color overlapping another