HPR All-Temp Asphalt is a high-grade waterproofing and roofing laminate asphalt with a double advantage: an unusually high softening point and a correspondingly high penetration index. The high melting point gives HPR All-Temp firmness in the summer heat, and the high penetration index gives it greater flexibility in cold winter temperatures. These characteristics make HPR All-Temp ideal for climates with large temperature differentials like those in the northern half of North America. HPR All-Temp can be used as the bonding/waterproofing bitumen for all Garland HPR Systems, including all StressPly®, StressPly Plus, StressPly E, VersiPly, HPR Tri-Base Premium, and Glasfelt. The HPR All-Temp can also be used for flashings, as specified by Garland.
