Basement waterproofing costs $6 to $15 per square foot, depending on the basement size, home's condition, and waterproofing methods. Higher fees apply for structural foundation repairs. Exterior waterproofing methods are always more effective because they prevent all water from entering a basement.
Basement waterproofing involves applying sealants, installing drains, and setting up barriers to prevent water intrusion. Experts also repair existing basement damage and may adjust the yard's gradient to redirect rainwater away from the home.
The most obvious way you'll know that your basement needs waterproofing is if water leaks into the basement or the walls get damp when it rains. A bowing wall or warped doors that get moldy are other common indications.
Additional signals you need waterproofing are:
Many benefits of waterproofing your basement that are worth the cost include:
Waterproofing a basement is cheapest for more temporary solutions like painting the floors and walls with high-quality sealants. If you have bowing walls or extra-large cracks in the walls, then seek a professional's advice immediately since the wall could collapse.
Some inexpensive DIY ways to start waterproofing also include:
Out of all the waterproofing methods, the best ones are those that address water drainage over your entire property.
These projects can include many steps according to your conditions:
A basement waterproofing company typically takes 1 to 3 days to finish an area up to 300 square feet. Allow up to 7 days when more excavation work is necessary. The amount of time it takes varies according to property conditions, extent of the damages, and the method.
A complete exterior basement waterproofing lasts more than 25 years for adding a new French drain around the perimeter, regrading the yard, and applying a water barrier sealant to the foundation. Most interior basement waterproofing lasts 10 to 25+ years depending on the installation quality.
Applying a sealant to the interior alone is a temporary solution that doesn't stop water pressure from building outside the basement walls.
You can increase your home's value by waterproofing the basement in many places, and the total value added varies according to the criteria of the property appraiser.
If a buyer finds you have water leaks in the basement during the home inspection, then they often refuse to buy the home when expensive repairs are likely.
Many homeowners insurance policies can cover general repairs after a pipe bursts or after a flood, if you have flood insurance in the plan. However, insurance typically doesn't cover installation of a complete waterproofing system. Confirm the terms and conditions of your coverage by reading your policy.
Before hiring a basement waterproofing company near you:
Ask these key questions to help you pick a good basement waterproofing company:
Search, get cost estimates, contact pros, and book—all for free.
View profiles, read reviews, check qualifications, and see prices before hiring.
Ask questions, confirm their availability, and hire the right pro when you're ready.