Primer
Pr355 General-Purpose Primer
A jet-black, general-purpose roofing primer formulated with specialized polymers and wetting agents for strong adhesion over aged asphalt, SPF, primed metal, wood, concrete and masonry. The black finish promotes solar warming, which can improve yield on spray foam work. ½ gal per 100 ft² — about 8 wet mils.
- Packaging
- 55 gal drum · 5 gal pail
- Color
- Jet black
Compatible substrates
Pr355 is specified in one roof system — open one for the full build-up.
| VOC EPA Method 24 | < 50 g/L |
|---|---|
| Solids by volume ASTM D 2697 | 38 % ± 2 |
| Solids by weight ASTM D 1644 | 45 % ± 2 |
| Density ASTM D 1475 | 9.7 lb/gal |
| Service temperature range | 0 °F to 185 °F |
| Dry between coats | 6 hours minimum |
| Complete cure | ~24 hours |
| Clean up | Water |
| Shelf life | 12 months, unopened |
| Coverage | ½ gal / 100 ft² (~8 wet mils) |
Resource documents
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