The dark stains caused by asphalt bleed through on roofing substrates
containing bitumen, including built-up roofing (BUR), all types of ModBit,
and smooth or granulated asphaltic roofing membranes is a problem for
conventional silicone roofs.
GacoFlex BleedTrap, a single-component, easy-to-apply water-based sealer was
developed to encapsulate the oil that commonly exudes from these substrates
and effectively traps it within the sealer to inhibit bleed-through to GacoFlex
Solvent-Free Silicone Coatings. The result is a GacoFlex silicone roof free from
discoloration or staining.
BleedTrap is part of a full system of GacoFlex integrated products. The
exceptional film build of BleedTrap provides a smoother surface for
easy top coat application of GacoFlex Solvent-Free Silicone Coatings.
The use of BleedTrap followed by a thin primer coat of GacoFlex
E5320 2-Part Epoxy Primer/Filler is required to ensure adhesion and
to be eligible for the 5-Year Reflectivity Warranty offered on GacoFlex
S2100 Cleanable Solvent-Free Silicone Coating when applied over
asphaltic and bitumen-containing substrates.
BleedTrap encapsulates the oil that commonly exudes from these substrates and effectively
traps it within the sealer to inhibit bleed-through to GacoFlex Solvent-Free Silicone Coatings.
Note: Actual coverage may be less than 100 square feet per gallon due to surface profile, losses
due to overspray and wind, and residual coating left in the container.
While BleedTrap will exhibit early rain resistance in as little as 30 minutes, it should be allowed
to thoroughly dry prior to application of primer or top coat. This level of dryness can be achieved
in as little as twelve hours or more than twenty-four hours depending on ambient conditions.
GacoFlex S21 Series Cleanable Solvent-Free Silicone Coatings require a primer coat of GacoFlex E5320 2-Part Epoxy Primer/Filler be applied over BleedTrap prior to application of silicone top
coat. After E5320 Primer has been applied and allowed to dry according to label instructions,
GacoFlex S21 Series can then be applied over the E5320 Primer.
Other GacoFlex Solvent-Free Silicone Coatings can be applied directly over BleedTrap as soon
as BleedTrap is thoroughly dry; no primer coat is typically required.