DAP® High Heat Fire Resistant Mortar, Black, 10.1 oz.
DAP® HIGH HEAT FIRE RESISTANT MORTAR is a non-combustible silicate cement for applications in wood frame construction where an ASTM E136 non-combustible sealant is required, such as filling around vents, pipes, ducts and chimneys at ceiling and/or floor level prior to the application of drywall products. It has been tested in accordance with ASTM E136 and withstands temperatures up to 2000°F. It can also be used to patch chipped or cracked firebrick in fireplaces or wood-burning stoves. It adheres firmly to firebrick when wet or dry and sets rock hard when fired. Easy water clean-up. Interior use only.
Recommended For:
- Use to tuck point between firebricks and to repair cracked fire bricks
- Use to fill interior openings around vents, pipes, ducts, chimneys and fireplaces at ceiling and/or floor level in non-rated wood frame, one and two family dwellings where non-combustible filler compound is specified.
- Installation of firestop, fireblock, and/or draftstop construction requires adherence to specific building codes interpreted at the local level. Consult your local building inspector prior to the application of an ASTM E136 product for these purposes.
- Interior use only
- Easy water clean-up, low odor, VOC compliant
- Paintable once heat cured
- Adheres well to masonry
- Sets rock hard once fired
- Meets ASTM E136
- Draft, smoke, fireblock sealant for applications in wood-frame construction where an ASTM E136 non-combustible sealant is required
- For repairing small chips or cracked fire brick, re-pointing mortar joints between fire bricks and bonding fire bricks together in fireboxes in fireplaces and wood burning stoves
- Withstands temperatures up to 2000°F
| Type | Sealant |
|---|---|
| Size | 10.1 fl. oz. |
| Color | Black |
| Brand | DAP |
| Material | Silicate Cement |
| Manufacturer Code | 18854 |
Surface Preparation: Prepare the application area by cleaning and removing crumbling brick, mortar, soot, debris & foreign material from the area to be repaired. For best adhesion, thoroughly dampen the surface with a brush and water before application.
Product Application:
- Apply in temperatures between 40°F and 100°F.
- Cut nozzle tip at an angle to an opening not less than 1/4” x 1/8”.
- Load cartridge into caulk gun.
- Fill penetrations, voids, cracks or holes with the mortar.
- Clean up excess wet mortar from surfaces & tools with a damp cloth. Clean skin with soap and water. Excess dried mortar must be cut or scraped away.
For Fire Brick Repair in Fireplaces & Wood-Burning Stoves Only:
- After applying, smooth mortar with a putty knife dipped in water.
- Protect the new mortar from direct water contact until fire-cured.
- Air dry for 24 hours, but no longer than 30 days. Allow 24 hours to cure between layers. When tack free, heat for final cure.
- To heat cure, start a small, low burning fire, keeping the heat below 220°F, until product dries (approximately 1 hour).
- Increase heat gradually to 500°F to harden the mortar (for another 1 to 2 hours).
Clean Up: Clean up excess wet mortar with a damp sponge before it skins over. Excess dried mortar must be cut or scraped away. Clean hands and tools with warm water and soap. Store container in a cool, dry place away from heat or cold. Store upside down.