Before installation of waterproofing systems we inspect and ensure that substrates are free of cracks, protrusions and damage to surface integrity and we also ensure that the area where waterproofing system needs to be install shall made free from all other activities that could disrupt. We carry out all the necessary rectification and preparatory works before the installation of the specified waterproofing system. The methodology, which we commonly followed for doing waterproofing job are as under:
Cleaning and removing of loosely adhering particles, dust etc. with wire brush/blower/ high pressure water jet wash and made free from any other contaminants (if any).
Surface shall be prepared with ready to use repair mortar /PMM or Plaster in CM 1:3 to receive the waterproofing properly.
The installed pipes shall be treated with a moisture insensitive epoxy putty to block the penetration after providing of 10mm thick gasket around the pipes to a width of approximately.
Choice of waterproofing systems is depends on various aspects such as requirement of site, locations, applicability of products, flexible to movement, durability and combination of layers etc. Before application, the surface should be SSD and installed system shall cover atleast 300mm high from floor level.
Coving of 50 x 50 mm at all the junctions between slab and wall in CC 1:2:4 with 12mm nominal size stone ballast, under the drip coarse finish with CM in 1:3 admixed with waterproofing admixture.
Installed waterproofing shall be further protected with plaster or other any suitable means.
Levelling course shall be done with lightweight concrete, AAC, broken bricks etc.