What a Real 5-Year Waterproofing Warranty Looks Like

Most waterproofing warranties in India are a sentence spoken at the end of a site visit. "We give five years warranty." There is no document. No GSTIN. No scope definition. No signature. If the leak returns, you call the number. If no one answers, the warranty is over.

A written waterproofing warranty is a document. If a contractor will not produce one, that is the answer to your question about whether to hire them.

Here is what a legitimate warranty document must contain.

1. The company's legal name, address, and GSTIN

A warranty is a financial commitment. If the company cannot be located, the warranty cannot be enforced. A GSTIN registration means the business is formally registered. The document should include the company address, not just a mobile number.

2. The property address and scope of work

The warranty covers a specific surface on a specific property. "Terrace waterproofing" is not enough. The document should describe: which terrace, what area in square feet, which materials were applied, and which surfaces were treated. If your terrace is 2,400 sq ft and only 1,200 sq ft developed a problem three years in, the scope definition determines whether you have a claim.

3. The warranty period, stated in years from a specific start date

"Five years warranty" means nothing without a start date. The document must state the date the warranty period begins. Some contractors date it from material application, others from final inspection. Either is acceptable, but it must be specified. A warranty with no start date cannot be enforced.

4. What the warranty covers

Specifically: leak recurrence at treated surfaces due to membrane failure, application defects, or delamination. It should not cover structural cracking in the slab itself, water entering through untreated surfaces, or damage caused by building alterations after handover. Clarity on what is covered and what is excluded is not a red flag in a warranty document. Vagueness is.

5. What the warranty does not cover

Every honest warranty excludes certain events. Common exclusions: damage caused by subsequent construction activity, penetrations made after the waterproofing was applied, and failure of areas outside the defined scope. If a contractor's warranty has no exclusions, they are either unusually confident or they have not thought about what they are committing to.

6. The claim process

How do you make a claim? Who do you contact, and how? What is the expected response time for a site visit? Is there a written inspection report before remedial work begins? A warranty with no claims process is just a piece of paper. The claims process tells you whether the contractor intends to honour the document.

7. Authorised signature

The warranty must be signed by a named individual with authority to commit the company. A rubber stamp alone is not a signature. The name should be legible. If the company director signs, that is the strongest form. If a site supervisor signs without explicit authorisation, the enforceability is weaker.

The Victoria Waterproofing warranty document contains all seven elements. It is issued on company letterhead, signed by Subhash Chander Bose, and covers leak recurrence at treated surfaces for five years from handover. It transfers to the new owner if the property is sold within the warranty term.

Before paying any advance to any waterproofing contractor, ask for a sample warranty document. If they cannot produce one, or if the document they produce is missing any of the above elements, you have the information you need.

A 5-year warranty that cannot be enforced is not a warranty. It is a sales tactic.