Waterproofing for Government & Public Sector Projects
Public sector waterproofing is measured work against a tendered specification, with documentation that has to survive audit. What matters is compliance with the schedule of quantities, measurable quality control, and a handover file that stands up to scrutiny.
An executive engineer, project officer or procurement official at a municipal body, public authority or PSU.
What actually makes this difficult
The technical work overlaps with every other kind of building. The constraints are what differ, and they are what a contractor either understands or does not.
- Tendered scope
- Work is executed and measured against the schedule of quantities, not renegotiated on site.
- Audit trail
- Measurement books, test records and material certificates must all reconcile.
- Specification compliance
- Materials must meet the specified IS codes and be evidenced.
- Public accountability
- Quality is scrutinised after handover, sometimes years later.
How we work on these projects
- Execute strictly to the tendered specification, raising deviations formally rather than improvising.
- Maintain measurement records that reconcile with the schedule of quantities.
- Supply material test certificates against the specified IS codes.
- Stage-wise photographic records and third-party testing where the contract requires it.
Systems this kind of project usually needs
- Terrace Waterproofing
Terrace waterproofing is the application of a continuous water barrier across a roof slab, laid to a fall so rainwater drains rather than ponds. In Mumbai the usual choices are brick bat coba with china mosaic, an APP or SBS torch-on membrane, or a liquid-applied polyurethane or polyurea coating.
- Basement Waterproofing
Basement waterproofing protects a below-grade structure against groundwater under hydrostatic pressure. Because the water pushes inward continuously, the reliable approach is a box-type system — a continuous barrier wrapping raft and retaining walls — applied pre-construction where possible.
- Building Restoration
Building restoration is the structural rehabilitation of an ageing or distressed building — diagnosing why the concrete is failing, repairing it properly, and protecting it so it does not fail again. It covers RCC repair to columns, beams and slabs, rebar treatment, carbon-fibre strengthening where sections have lost capacity, facade renewal and full waterproofing.
- Column & Beam RCC Work
Column and beam RCC work is structural concrete repair to a building's primary frame — cutting out distressed concrete, treating or replacing corroded reinforcement, and rebuilding the section with polymer-modified repair mortar or micro-concrete. It is structural work and must follow a proper diagnosis, not a visual guess..
- Injection Grouting
Injection grouting forces a cementitious or epoxy grout under pressure into cracks, voids and honeycombed concrete to restore continuity and block water paths. Cementitious grouts fill larger voids economically; epoxy grouts bond structurally and are used where the repair must carry load across the crack..
- External Plaster & Painting
External plaster and painting is the building's first line of defence against driving rain. Sound, well-bonded plaster sheds water; hollow or cracked plaster holds it against the structure.
- APP Membrane Waterproofing
APP membrane is an atactic-polypropylene-modified bitumen sheet, torch-applied to a primed substrate with lapped and sealed joints. The APP modifier gives it a high softening point and good UV and heat resistance, which suits exposed Indian terraces.
Government Bodies — questions we get asked
Do you supply material test certificates?
Yes. Batch certificates and datasheets for every material, referenced against the IS codes named in the specification, as part of the handover file.
How are deviations from the specification handled?
Formally and in writing, before execution. Where a specified detail will not perform in the actual site condition, we raise it for the engineer's decision rather than substituting on site.
Can you work to a departmental schedule of rates?
Yes. We quote against the schedule of quantities and rates as issued, and identify any item where the specified rate does not cover the specified work.
We also work with
Talk to us about your government bodie project
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