What voids the waterproofing warranty?

The full picture

Some waterproofing warranties read like they were written to be denied. Long lists of exclusions, “acts of nature” language, mandatory annual inspections at $300 a visit. Ours does not work that way. Here are the only real ways to void coverage — and what to do instead.

1. Water from an unrelated source

The warranty covers the area we waterproofed. If water enters from a source we did not address, that is a separate issue:

• A burst supply line, dishwasher hose, or water heater above the basement
• A roof leak running down inside the wall cavity
• A clogged or disconnected exterior downspout dumping water at a wall we were not contracted to seal
• Sewer backup through a floor drain (separate insurance / municipal scope)

What to do instead: call us anyway. We can identify the actual source, document it for your insurance carrier if relevant, and quote the additional scope separately. Often the fix is small.

2. Modifications to the installed system

If someone cuts into the drainage trench, removes or replaces the sump pump with a non-spec model, or alters discharge lines without our involvement, the affected section loses coverage. This is the only “you broke it” clause — and we will tell you in advance which parts of the system not to touch.

3. Structural movement we were not contracted to repair

Waterproofing assumes the foundation is stable. If a wall later bows, shifts, or develops new cracks from soil pressure or movement we were not contracted to address, the resulting water intrusion is a foundation scope, not a warranty claim. Many homes need both services — we will tell you upfront if yours does.

4. Work performed by another contractor on the warranted system

If a different contractor digs near the foundation, modifies the basement floor, or installs new drainage that interacts with ours, we need to be involved before the work happens. A quick call usually keeps coverage intact.

What does not void the warranty

Worth saying out loud, because some companies will tell you otherwise:

• Selling the home (warranty transfers one time at no cost)
• Refinishing the basement — as long as the drainage system stays accessible at the inspection port
• Heavy storms or seasonal high water tables (this is literally what the system is designed for)
• Not running an annual paid “maintenance check” — we do not require one

Read the actual warranty document before signing. We are happy to walk through every clause.