When your roofing projects involve materials or environments that generate high temperatures, such as metal roofing or installations in hot climates, you need an underlayment that can withstand the heat while providing reliable protection. PRIMO-GUARD HT is a high-performance, high-temperature self-adhesive roofing underlayment specifically designed for these demanding applications. Constructed with a premium blend of SBS polymers, asphalt, and additives, it delivers an ideal combination of durability and flexibility.

A key feature of PRIMO-GUARD HT is its impressive temperature resistance, specifically formulated to endure temperatures up to 125 °C (257 °F). This makes it an ideal choice for installations under metal roofs, which can reach extreme surface temperatures, or as a robust waterproof barrier beneath asphalt shingles in hot environments. The top layer features an anti-slip film for good traction and safe application. The bottom layer is equipped with an easily detachable split siliconized release film, protecting a highly adhesive asphalt layer that ensures a strong, reliable bond to the roof deck.

Additional features include excellent adhesion to multiple substrates, high flexibility for conforming to contours, good dimensional stability, and strong resistance to tearing, puncture, and rot. It also serves as a reliable vapor barrier. PRIMO-GUARD HT complies with the standards of ASTM D1970, confirming its performance characteristics for self-adhering polymer-modified asphalt roofing underlayment. For roofing contractors seeking a dependable, high-temperature underlayment solution, PRIMO-GUARD HT from A1A Wholesale Supply provides the durability, flexibility, and temperature resistance needed for a wide range of projects nationwide.

• Product Name: PRIMO-GUARD HT
• Brand: Primo Materials
• Type: High-Temperature Self-Adhesive Roofing Underlayment, Waterproof Barrier
• Composition: Blend of SBS polymers, premium asphalt, and additives
• Construction: Anti-slip film top layer, split siliconized release film bottom layer, highly adhesive asphalt layer
• Key Features:
  • High-temperature resistant (up to 125 °C / 257 °F)
  • Split release film for easy application
  • Anti-slip / Slip-resistant film for safe application
  • Excellent adhesion to multiple substrates
  • High flexibility and good dimensional stability
  • Tear and puncture-resistant
  • Vapour barrier
  • Rot resistant
  • Strong, reliable bond
• Uses: Installations under metal roofs, waterproof barrier beneath asphalt shingles, high-temperature roofing applications.
• Standards: Complies with ASTM D1970