Garla-Block is a water-based acrylic primer formulated to prevent staining and improve coating adhesion over a variety of roof systems (smooth/granulated asphalt, coal tar modified bitumen, and modified bitumen). This high-quality formula prevents the migration of aromatic oils from seeping out of the roof system and into the surface coating. Garla-Block can be installed with solvent-based urethanes, water-based acrylics, and aluminized asphaltic coatings.
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| Method | Description |
|---|---|
| Roller | Apply Garla-Block at a rate of 0.5 gal./100 sq. ft. (0.21 l/m2 ) to the prepared substrate using a medium nap roller. |
| Spray | Apply Garla-Block at a rate of 0.5 gal./100 sq. ft. (0.21 l/m2 ) to the prepared substrate using spray equipment (a 0.0155-0.021 inch spray tip orifice and a minimum spray pressure of 500 psi are recommended). |
| Eco-Fact | Value |
|---|---|
| VOC | < 50 g/l |
| Type | Link |
|---|---|
| Data Sheets | Garla-Block Technical Data Sheet |
| SDS | Garla-Block Safety Data Sheet |
| Garla-Block GHS Safety Data Sheet | |
Garla-Block’s unique bleed-blocking characteristics preserve the aesthetics of a reflective coating. Prevent the staining and discoloration ordinarily associated with coated asphalt and coal tar roof systems by applying Garla-Block primer before the coating.
This formula dries tack-free within 1-2 hours at 77°F (25°C) for faster job completion and reduced labor costs. Plus, Garla-Block fills cracks and crevasses in the roof system to provide a more uniform application surface, increasing the coverage rate of the top coat.
The Garla-Block formula is low-VOC (universally compliant) and odorless. Not only does that make it more environmentally friendly, but it also eliminates the flammability and toxicity hazards of solvent-based primers.
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