Is there a warranty on waterproofing work, and how long should it be?

Yes, reputable waterproofing contractors should provide warranties, and in Ottawa's climate with freeze-thaw cycles and heavy spring runoff, a proper warranty is essential protection for your investment.

Most professional waterproofing companies offer warranties ranging from 5 to 25 years, depending on the type of work performed and materials used. For exterior waterproofing membrane systems, you should expect a minimum 10-year warranty, with many premium systems offering 15-25 year coverage. Interior waterproofing solutions like drainage systems typically come with 5-10 year warranties, while sump pump installations usually carry 3-5 year warranties on the equipment and installation.

The warranty should cover both materials and workmanship, not just the products themselves. This distinction is crucial because many waterproofing failures occur due to improper installation rather than product defects. A comprehensive warranty will address issues like membrane tears, drainage system blockages, or pump failures that occur due to installation errors. In Ottawa's challenging soil conditions - with our clay-heavy ground that expands and contracts significantly - proper installation technique is just as important as quality materials.

What should be included in your warranty? Look for coverage that addresses water infiltration, system component failures, and any damage caused by the waterproofing system's failure. The warranty should clearly state what triggers coverage (visible water entry, system malfunction) and what the contractor will do to remedy issues. Some warranties are prorated, meaning coverage decreases over time, while others provide full coverage for the entire term.

Ottawa-specific considerations make warranties even more critical. Our extreme temperature swings from -30°C to +35°C put tremendous stress on waterproofing systems. Spring snowmelt creates hydrostatic pressure that can overwhelm inadequate systems, while our clay soil's expansion and contraction can crack foundations and compromise seals. A local contractor familiar with these conditions should stand behind their work with confidence.

Be wary of contractors who don't offer warranties or provide only very short coverage periods. This often indicates either inexperience or lack of confidence in their work quality. Always get warranty terms in writing, including the contractor's contact information and proof of their business registration and insurance. For major exterior waterproofing projects costing $15,000-40,000, a 10+ year warranty isn't just nice to have - it's essential protection for your home's foundation and your financial investment.

For a comprehensive evaluation of your basement's waterproofing needs and warranty-backed solutions, Ottawa Basements can connect you with trusted waterproofing specialists who understand our local conditions and stand behind their work with solid guarantees.