Mitra Roof treatment Centre was established on 1980 in Kolkata serving for chemical waterproofing treatment of R.C.C. & R.B.C. roof for prevention of water seepage and leakage. The main advantages of using EVER-SEAL compound is that it enters the problem zone e.g. hairline cracks and porous areas of the concrete / RCC. This waterproofing chemical also nullify the absorbency of the surface and improves abrasion resistance with the elimination of the growth of algae. MRTC is the only waterproofing organization in West Bengal licensed to use EVER-SEAL compound, having ISO 9001:2015 certification with IAS and IAF affiliation. This treatment holds written guarantee for Ten Years.