DESCRIPTION
Stains in the paint surface caused by virtually anything that would bleed, leak, or stick to the paint film.
POSSIBLE CAUSE
Water stains
Tobacco smoke leaves yellow stains
Fire smoke and soot damage
Grease and oil
Rust
SOLUTION
Water: The source of the water must be found and repaired. Excessively damaged wood, plaster, or drywall may need to be replaced. Peeling paint must be removed if present. The stained area must be properly sealed with a primer designed to "hold out" water stains.
Tobacco smoke stains, fire smoke and soot, and grease and oil all should be cleaned as much as possible from the surface using ProClean Professional® PrepWash Cleaner or other appropriate cleaner. Stains must be sealed before topcoating.
Rust must be mechanically removed (with a brush or power tool) and the substrate (e.g., the surface to be painted) primed with a rust-inhibiting primer.
Tannins are extractives found in wood that can be leached out, generally with water, and discolor a coating. (See Tannin Staining for more).
Solvent-soluble stains (stains that may be removed with a solvent-based cleaning solution): oil, grease, tar, solvent-based markers, etc., and minor dried water stains.
Water-soluble stains (stains that may be removed with water-based cleaning solution): dried water stains, smoke stains and related odors, grease, ink, and pencil stains.
INTERIOR
RUST
All Surface Enamel Primer
WATER-SOLUBLE STAINS
White Pigmented Shellac Primer
Premium Wall & Wood Primer
SOLVENT-SOLUBLE STAINS
Multi-Purpose Primer
SUGGESTED FINISH
Duration Home®
Cashmere®
SuperPaint®
ProClassic®
or reapply the same coating
EXTERIOR
RUST
All Surface Enamel Primer
WATER-SOLUBLE STAINS
Exterior Oil-Based Wood Primer
Fast Drying Primer
SOLVENT-SOLUBLE STAINS
Exterior Latex Wood Primer
SUGGESTED FINISH
Duration®
SuperPaint®
A-100®
WoodScapes®
or reapply the same coating