Primer
Pr315 Bleed-Blocking Primer
An acrylic bleed-blocking primer on a polymer emulsion resin, used beneath SESCO silicone coatings over PVC, concrete, modified bitumen and BUR, and to saturate and embed polyester fabric in reinforced fluid-applied membranes. The light-yellow film darkens to amber as it dries — visual confirmation that it is ready for the topcoat. 1 to 1.5 gal per 100 ft² as a primer; 3 gal per 100 ft² with fabric.
- Packaging
- 5 gal pail
- Color
- Yellow, drying to amber
Compatible substrates
Pr315 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 | 45 % |
| Solids by weight ASTM D 1644 | 62 % |
| Density ASTM D 1475 | 11.1 lb/gal |
| Viscosity ASTM D 2196 | 110,000 cps |
| Tensile strength ASTM D 2370 | 250 psi |
| Elongation ASTM D 2370 | 250 % |
| Dry time before silicone | 24–48 hours |
| Coverage | 1–1.5 gal / 100 ft² · 3 gal / 100 ft² with fabric |
| Shelf life | 12 months, unopened |
Need a spec letter for this system?
Our reps write them for building owners and architects.