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About Waterborne Wood Sealers
Our exclusive ASAC™ Technology has enabled the development of a full line of Quality Wood Sealers that coat wood well, penetrate and seal the pore structure of a variety of wood species, and permit smooth, uniform coverage of applied topcoats with excellent adhesion. Unlike other waterborne sealers, GreenLight Coatings™ sealers offer the perfect balance of Performance and Environmental Sustainability to allow conformance to the program requirements of the South Coast Air Quality Management District (SCAQMD), Greenseal, and LEED.
The sealer may be applied over GreenLight Coatings™ stains immediately after wiping to the final color intensity. This is termed a “wet on wet” application technique.
Apply the sealer to a wet thickness between 4 mil to 6 mil (0.004” ‐ 0.006”). When dry this will permit excellent sanding without burnishing through the stain coat. Therefore, if the stain color is burnished or sanded to lighter shades during seal coat sanding, it is very possible that the seal coat was not thick enough.
As a visual aid to correct wet sealer thickness, when applied correctly, the sealer will appear hazy and have a semi-transparent milky white appearance. It should not have any pockets, dimples or fish‐eyes. The wood grain should be barely discernible through the wet applied coating. Just remember, the sealer WILL DRY CLEAR.
If fish‐eyes or repel spots occur, check for contamination on the wood surface. The GreenLight Coatings™ waterborne wood sealers have been specifically designed to be tolerant of certain wood rosins/resins but may not coat well over machine or other types of oils and certain other contaminants.
The sealer when dry will exhibit grain raise, especially with oak surfaces since this is a very long fiber wood species. THIS IS EXPECTED! The sealer will “lock” any raised grain in place and permit excellent sanding properties to remove any evidence of raised grain.
It is recommended to sand the dry sealed surface with 220 grit media or finer. This will provide the smoothness quality necessary for superior topcoat application.
If difficulty is experienced in sanding the sealer, due to poor dusting or it gums up in the sanding paper, the sealer is probably not sufficiently dry. Dry for longer times or apply mild heat to promote drying (110o F).