Sealant Mortar
DAP 18854 Sealant Mortar, 10.1 oz Tube
DAP® High heat mortar is a non-combustible silicate cement used for patching chipped firebrick in fireplaces and sealing wood-burning stoves. High heat mortar adheres firmly to the firebrick when wet or dry. High heat mortar can also be used for applications in wood frame construction where an ASTM E136 non-combustible sealant is required, such as sealing around vents, pipes, ducts and chimneys at ceiling and floor level prior to the application of drywall products.
Features:
- Draft, smoke, fire block sealant for openings in wood-frame construction
- Excellent for patching fireplaces and wood burning stoves
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Sealant Mortar
Sealant Mortar
DAP 18854 Sealant Mortar, 10.1 oz Tube
DAP® High heat mortar is a non-combustible silicate cement used for patching chipped firebrick in fireplaces and sealing wood-burning stoves. High heat mortar adheres firmly to the firebrick when wet or dry. High heat mortar can also be used for applications in wood frame construction where an ASTM E136 non-combustible sealant is required, such as sealing around vents, pipes, ducts and chimneys at ceiling and floor level prior to the application of drywall products.
Features:
- Draft, smoke, fire block sealant for openings in wood-frame construction
- Excellent for patching fireplaces and wood burning stoves
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
DAP 18854 Sealant Mortar, 10.1 oz Tube
DAP® High heat mortar is a non-combustible silicate cement used for patching chipped firebrick in fireplaces and sealing wood-burning stoves. High heat mortar adheres firmly to the firebrick when wet or dry. High heat mortar can also be used for applications in wood frame construction where an ASTM E136 non-combustible sealant is required, such as sealing around vents, pipes, ducts and chimneys at ceiling and floor level prior to the application of drywall products.
Features:
- Draft, smoke, fire block sealant for openings in wood-frame construction
- Excellent for patching fireplaces and wood burning stoves
















