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Surface Preparation
All surfaces
must be clean, dry, structurally sound and free from dirt, dust,
curing agents or form releasing agents, efflorescence, scale and other
contaminants prior to application. Degrades, deteriorated or
unsound surfaces shall be repaired or replaced. All loosely
adhering paint or coating shall be completely removed by scraping,
pressure washing, blasting or other mechanical means. Chalky,
oxidized or other contaminated surfaces must be washed with United
Cleaning Concentrate (UCC) or equal biodegradable cleaner.
All
pits, gouges, knotholes and other depressions in wood substrates shall
be filled and leveled using exterior grade wood putty.
Application of United's Primer 707 will provide stain-blocking
and adhesion to bare wood substrates.
MARATHON CWS
may be applied directly to properly prepared concrete, masonry or
brick surfaces. Concrete, masonry or stucco surfaces that are
delaminated and/or spalled shall be repaired prior to application of
the sealer. All cracks larger than hairline shall be considered
as "moving" and shall be routed and caulked.
Prior to application over masonry block or other porous and/or
textured surfaces, Block Filler 704 or other approved acrylic
block filler must be utilized to fill the pores and achieve a
pinhole-free surface.
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