Constec develops "Fire-spreading resistant" spec for Rimtect roof repair method

Constec Co., Ltd. has developed and launched a "fire-spreading resistant specification" for its Rimtect method, a resin spraying repair technique for deteriorated slate and metal roofs. With rising demand for roof repairs in aging buildings like factories and warehouses, there is a need for shorter construction periods, waste reduction, and enhanced safety. The new specification significantly improves fire resistance by adding a fireproof layer while leveraging Rimtect's ability to form seamless, highly waterproof layers over existing roofs of complex shapes. It has passed fire resistance tests at the Japan General Building Research Corporation for both slate and metal bases, showing no burn-through or penetration holes, and the flame extinguished naturally. The new "C4 mortar" used in the fireproof layer also reduces CO2 emissions by about 42% compared to conventional products, lowering the environmental impact. The company is currently applying for structural method certification under the Building Standards Act.