Indoor/Outdoor Joint Sealant Can Be Applied in Cold Weather

Kemper System America Inc. has introduced GreatSeal PE-150, a single-component, multi-purpose joint sealant designed for 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 low VOCs. The multi-purpose indoor/outdoor sealant exhibits weathering properties with a service range of 200 F to minus 40 F (93 C to minus 40 C), movement capability of +/- 25 percent, 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 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, a liquid-applied fibered acrylic air barrier. All three brands are in the STS Coatings line, acquired by Kemper System America in 2016.

Roof Guardian Technologies elastomer-based coatings are a cost effective solution for roof recovery and other projects. Wall Guardian FW-100 is a cost-effective air barrier, and acts as a water/weather barrier and vapor retarder.