All national building codes specify refractory mortar conforming to ASTM C-199 for installing firebrick and clay flue liners in masonry fireplaces and chimneys.
Easy to use, economical and versatile, HEAT STOP® resists temperatures well above 2000° F, assuring code compliance and a quality installation. Regular cement or mortar found in most mortar mixes resists temperatures up to 600-800° F, but residential installations operate well in excess of 800° F.
In addition to refractory products, you can purchase other masonry supplies, such as cleaning and repair products, admixtures and coloring agents, and more, at their online store.
You can purchase Heat Stop from your local masonry supply store, or you can order conveniently online by visiting our authorized dealer here
Featured Products
INSUL STICK
Combines insulation and strength. Apply over other brick, seal masonry wall penetrations, and more.
INSUL CAST
For backup insulating in any masonry application. Ideal for bread and pizza ovens.
HEATCAST 40
For casting special shapes for woodstoves, hearths, sidewalls and other high temperature applications.
HEAT STOP PREMIXED
For installing firebrick in fireplaces, boilers, incinerators, furnaces, kilns, etc. Also available in beige.
HEAT STOP 50 & HEAT STOP II
For all fireplace, chimney, and bake oven mortar needs. Non water soluble.
DOMESTIC FIREPLACE MORTAR
Combines insulation and strength. Apply over other brick, seal masonry wall penetrations, and more.