FIRE CEMENT - VITCAS - VITCAS Fire Cement is a Premium grade putty material for repairs and maintenance of fireplaces, stoves, boilers, range cookers, fire backs, furnaces and kiln linings. Excellent adhesion to fire bricks and other construction materials. Our product is fireproof up to 1250 C USE OF FIREPROOF CEMENT Vitcas heat resistant cement mix is used for repairing small cracks in fire bricks and firebacks. Vitcas recommend this product for seals and small repairs on fireplaces, gas cookers, stoves and ranges, central heating systems and boilers in addition to sealing and jointing internal flue pipes. For external use in building outdoor ovens, barbecues and fire pits, Vitcas recommend Outdoor Oven Cement.