BLACK Fire Cement formulated specifically for patching and repairs to firebricks, fireplaces, solid fuel ovens and boilers. Resistant to 1250ºCBlack Fire Cement is a finely ground putty-like material which is resistant to high temperatures. Rates to 1250oC. It is used for the repair of fire bricks, stoves, fireplaces, etc and sealing flue pipes Uses: For sealing and jointing internal flue pipes Repairing small cracks and damage on firebricks Repairing firebacks Seals and small repairs on fireplaces, gas cookers, stoves and ranges, central heating systems and boilers. Preparation: For maximum adhesion, remove all dirt, dust and rust, and make sure the area is thoroughly clean. Application: Premium Fire Cement should be used straight from tub. Apply with a trowel, knife or hand and work well into the area. Fine joints can be made. As soon as possible, gently heat dry the repaired surfaces, gradually raising the heat to full operating temperature over 3-4 hours. Apply further cement t