Technical Data Sheet (TDS)
Sealora® PitchGuard is a high-performance, self-adhering roofing underlayment composed of a polymer-modified bitumen adhesive laminated to a high-strength non-woven polypropylene surface.
It provides secondary water protection in valleys, eaves, rakes, ridges, penetrations (chimneys, skylights, vents), low-slope decks, roof transitions, and under metal, tile, solar roofing systems.
Ideal for: Hot climates, solar arrays, and high-temperature demanding systems (up to 240°F).
| Property | Test Method | Value |
|---|---|---|
| Thickness | ASTM D5147 | 40 mil (1.02 mm) |
| Top Surface | — | Grey non-woven polypropylene |
| Bottom Surface | — | SBS-modified bitumen |
| Release Film | — | Silicon-coated split film |
| Tensile Strength (MD/CD) | ASTM D1970 | 80 / 60 lbs/inch |
| Tear Resistance (MD/CD) | ASTM D1970 | 60 / 40 lbf |
| Elongation (MD/CD) | ASTM D1970 | 70% / 60% |
| Adhesion to Plywood @40°F | ASTM D903 | 5 lbf/ft |
| Adhesion to Plywood @75°F | ASTM D903 | 12 lbf/ft |
| Nail Sealability | ASTM D1970 | Pass |
| Thermal Stability | ASTM D1970 | Pass |
| Water Vapor Permeance | ASTM E96 | 0.03 perms |
| Low Temp Flexibility | ICC AC48 | Pass |
| Fire Resistance | ASTM E108 | Pass (Class A under rated coverings) |
| Application Temp | — | 40°F to 110°F |
| UV Exposure | — | Up to 90 Days |