Boss 400 is a Siding and Window Sealant. It bonds and seals siding, windows, fibre cement, concrete & brick.
For use as a perimeter weatherseal for field glazing, window installation and as a primary backbeeding compound.
Easy to gun and tool in temperatures between -37ºC to 60ºC
Will not crack, yellow, shrink and it's flexible
VOC compliant and has minimal odor
Colours shown were designed to be as accurate as possible but due to the digital reproduction, they may differ slightly from the true product colour. We highly recommend making your final colour selection based off of a product sample piece. Colours are subject to change without notice.