RainBuster 850 Ultra-Flexible Roof Tile Adhesive/Sealant
High-Grade Polyurethane

850 Rainbuster 850 Rainbuster 850 Rainbuster 850

RainBuster 850 is the premier choice in preventing roof leaks and tile damage. It is specified by the nation’s leading builders and trusted by quality minded contractors. With its premium polyurethane formulation, RainBuster 850 provides a non-shrinking, permanently flexible, watertight seal. It is the ideal choice for tile-to-tile bonding and sealing flashing lap joints, roof-to-wall flashings, vents and chimney caps, gutters, skylights, HVAC and underlayment.

RainBuster 850 prevents leaks by enabling the roof structure to withstand inclement weather, hot and cold temperature extremes, repeated foot traffic, seismic activity and wind uplift. When used as an adhesive, RainBuster 850 permanently secures roof tile. Its flexibility allows roof tiles to stay adhered without breaking when subjected to the stresses of extreme wind uplift. When used as a joint sealant, RainBuster 850 permanently seals out water as surfaces move with extreme temperature fluctuation and harsh weather. RainBuster 850 performs where traditional roofing cements shrink, dry rigid, and cause broken tile and leaks.

Respected as the high quality standard in roofing applications for over 25 years, RainBuster 850 is a proven performer in the elimination of leaks, callbacks and warranty claims. In sharp contrast to traditional, high maintenance products such as mastics and roofing cements, RainBuster 850 provides proactive, long lasting leak preventing building solutions. RainBuster 850 is backed by an industry leading lifetime warranty.

GreenThis Superior Green Technology product reduces environmental impact and helps maintain better air quality by utilizing a low solvent and low V.O.C. formulation. This product utilizes “closed system curing technology” whereby moisture is drawn from the atmosphere to begin an internal curing process. The result is lower solvent and V.O.C. emissions. This product is V.O.C. compliant under SCAQMD, AQMD, and CARB. It earns LEED and Green Build Credits. For more information, please click here.


View RainBuster 850 Datasheet

View the Green Aspects of this Product

RainBuster 850 Black SDS 060115.pdf

RainBuster 850 Brown SDS 060115.pdf

RainBuster 850 Gray SDS 060115.pdf

RainBuster 850 Tan SDS 060115.pdf

RainBuster 850 Terracotta SDS 060115.pdf

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