Vermiculite based poured insulation with NO asbestos
TOP Mix is a Vermiculite based poured insulation available in a 26 lb. bag. It contains NO asbestos and is simply mixed with water and poured around the chimney liner. It then solidifies to a cement like texture providing both stability and insulating value for proper clearance to combustibles.
One bag provides 1.5 cubic feet of insulation. The TOP Mix Sizing chart below can help you calculate how much TOP Mix you need.
Oil & Gas appliances are recommended to have insulation, but not required.
A minimum 1” clearance is needed from the exterior of the masonry structure to combustibles.
Two types of insulation are available:
TOP Mix is a Vermiculite based poured insulation and contains NO asTOP-os
TOP Wrap is 1/2" thick Foil-Faced Ceramic Wool Blanket that provides the zero clearance requirement