Waterproofing

What is Waterproofing?

Waterproofing is the engineering work that stops water from getting into a building. In India, where monsoons are severe, it is the highest-risk activity. It uses bituminous coatings, liquid-applied polyurethane membranes or crystalline admixtures on the roof terrace, underground basements, UG sumps and sunken bathroom slabs.

Practical example

Before paving the open terrace of an apartment tower, the waterproofing contractor applies three layers of a liquid elastomeric membrane over the concrete slab and runs it 300 mm up the parapet wall. The QA engineer then plugs the terrace drains and floods the roof with 2 inches of water for 72 hours (a ponding test). If the ceiling below stays dry, the waterproofing passes.

In SuperWise

In SuperWise a ponding test can be a checklist with number, photo and signature fields, for example a photo of the flooded terrace at the start and another after 72 hours. Each filled checklist records who filled it and when. Set as the finish checklist of the waterproofing task, with the checklist enforced, it must be approved before the task can be marked complete.

Quality and safety checklists