Kemper System America, Inc.now offers GreatSeal PE-150, a high-performance, single-component, multi-purpose joint sealant designed for long-lasting weathertight seals. It is ideal for sealing joints in roofing, walls and masonry, as well as gaps around penetrations, flashings, windows and doors.

Based on a ‘Next Generation’ polyether sealant, GreatSeal PE-150 contains no solvents and very low VOCs. The multi-purpose indoor/outdoor sealant exhibits excellent weathering properties with a service range of 200^oF to minus 40^oF (93^oC to minus 40^oC), movement capability of +/- 25%, and zero shrinkage.

Unlike most other sealants, GreatSeal PE-150 adheres even on damp surfaces. It can be applied in cold weather, and in most cases, without a primer. It bonds aggressively to most building materials including: wood, vinyl, glass, fiberglass, foam insulation, asphalt, modified bitumen, EPDM, PVC, PIB rubber, Kynar^® coatings, as well as painted, galvanized and anodized metals.

GreatSeal PE-150 is part of a family of construction sealants from Kemper System. The GreatSeal brand also includes GreatSeal LF-500 Liquid Flashing compatible with Roof Guardian elastomer-based roofing products, and GreatSeal LT-100 polyether Liquid Tape compatible with Wall Guardian FW-100A,aliquid-applied fibered acrylic air barrier. All three brands are in the STS Coatings line, acquired by Kemper System America in 2016.