dampness work in trichy rvs water proofing is Damp proofing in construction is a type of moisture control applied to building walls and floors to prevent moisture from passing into the interior spaces. wall crack repair work in trichy rvs water proofing is It also enables the gap filler/sealant or compound to fill the crack properly. You can do this using a scraper, putty knife or penknife. You may require a hammer and chisel for concrete walls.