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A dry basement starts with the right expert.

Tell us what your basement is doing. We'll match you with vetted waterproofing specialists near you — and give you the straight facts on cost before anyone shows up.

  • Takes about 2 minutes
  • Compare free estimates
  • Your info stays private
Bright, dry finished basement after professional waterproofing
Interior drain tileExterior membranesCrack injectionSump pumps & backupsPolyurea coatingsWall encapsulationFoundation repairWindow well drainsDehumidificationFlood cleanup
Interactive diagnosis

What is your basement telling you?

Tap the symptom that looks most like yours. You will see what usually causes it, how pros fix it and what it typically costs.

Diagnosis

Water on the floor after rain

Urgency
What's usually causing it
Saturated soil builds hydrostatic pressure against the foundation and pushes water through the joint where the wall meets the floor — the most common entry point in any basement.
Typical fix
Interior perimeter drain tile with a sump pump, or an exterior membrane and footing drain when the yard allows excavation.
Typical cost$3,000 – $12,000
Get matched for this
Solutions

Every way to stop water — explained plainly.

There is no single “best” system. The right fix depends on where water gets in, how your lot drains and how you use the space.

Interior drain tileInterior drain tileCaptures water at the floor-wall joint and sends it to a sump pump. Fast, no digging.Exterior membranesExterior membranesExcavate, seal and drain the outside of the wall so water never reaches it.Polyurea spray membranesPolyurea spray membranesA seamless, flexible membrane sprayed on walls and floors that cures in seconds.Sump pumps & backupsSump pumps & backupsRight-sized pumps with battery backup so storms and outages never win.Footing drainsFooting drainsPerforated pipe in clean stone relieves pressure at the base of the wall.Foundation & retaining wallsFoundation & retaining wallsBelow-grade protection for new builds, additions and retaining structures.
How it works

From wet floor to written estimate in three steps.

  1. 01

    Tell us what's happening

    Answer a few quick questions about your basement. No account, no sales call to get started.

  2. 02

    Get matched locally

    We connect you with specialists who work in your ZIP code and handle your type of problem.

  3. 03

    Compare & choose

    Get a free inspection and written estimate. Hire only if it is the right fit — zero obligation.

Start my free match
Basement waterproofing system — ExteriorExterior
Basement waterproofing system — InteriorInterior
Drag to compare

Interior or exterior? Here's the honest difference.

Interior systems manage water after it reaches the wall. Exterior systems stop it before it gets there. One is faster and cheaper; the other relieves the pressure on your foundation at the source.

Interior

  • No excavation
  • 1–3 day install
  • $45–$110 / linear ft

Exterior

  • Seals wall at the source
  • Several days or more
  • $120–$300 / linear ft
Read the full interior vs. exterior guide
Cost estimator

What will it cost? Find out in 20 seconds.

Move the sliders to build a realistic planning budget before you talk to a contractor.

1. Repair method

2. Basement perimeter

120 linear ft

Tip: a 30 × 40 ft basement has a 140 ft perimeter.

3. How bad is it?

4. Add-ons

Estimated project cost

$0–$0

    Planning range based on typical U.S. contractor pricing. Soil, access, depth and local labor rates move the final number — a free inspection gets you an exact quote.

    Get exact quotes free
    Comfortable finished basement living room

    Finish the basement you've been putting off.

    Home theaters, guest suites, gyms, playrooms. It all starts with a space that stays dry through every storm.

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    Why homeowners start here

    Built to protect you, not to sell you.

    $0

    To compare quotes

    Matching and estimates are always free for homeowners, with no obligation to hire.

    2min

    To request a match

    Five short steps. Skip anything you're not sure about.

    3max

    Specialists contact you

    No bidding wars and no list sold to dozens of companies.

    Real guidance first

    Plain-English guides on causes, methods and fair pricing — so you walk into every estimate informed.

    Browse the guides
    The Journal

    Learn before you call anyone.

    All guides
    FAQ

    Questions homeowners ask us most.

    Can't find your answer? See every FAQ or send us a note.

    How much does basement waterproofing cost?

    Most homeowners spend between $3,000 and $12,000. Crack injection can be a few hundred dollars per crack, interior drain tile with a sump pump usually runs $45–$110 per linear foot, and full exterior excavation with a membrane is typically $120–$300 per linear foot. Our free cost calculator gives a planning range for your basement.

    Is it free to get matched with a waterproofing expert?

    Yes. Requesting a match and comparing estimates costs you nothing and there is no obligation to hire anyone. You decide who to talk to and whether to move forward.

    What is the difference between interior and exterior waterproofing?

    Interior systems manage water that has already reached the foundation, collecting it in a drain channel and pumping it out. Exterior waterproofing excavates down to the footing and seals the outside of the wall so water never reaches it. Exterior is more thorough and more expensive; interior is faster and far less disruptive.

    Can I waterproof my basement myself?

    Small jobs — cleaning gutters, extending downspouts, regrading soil, sealing a hairline crack — are realistic DIY projects. Drain tile, sump installation, excavation and structural repairs are best left to a specialist, since a mistake can mean water damage or a cracked slab.

    How long does basement waterproofing last?

    A properly installed interior drainage system or exterior membrane commonly lasts 20 years or more, and many contractors back their work with transferable warranties. Sump pumps are the exception — plan to replace them every 7–10 years.

    What is polyurea waterproofing?

    Polyurea is a spray-applied elastomer that cures in seconds into a seamless, flexible membrane. It bridges hairline cracks, tolerates movement and stands up to standing water, which makes it a strong choice for foundation walls, floors and exterior below-grade work.

    Free assessment

    Ready for a dry basement?

    Answer five quick questions and we'll connect you with up to three trusted local specialists for a free inspection and estimate.

    • Free, no-obligation estimates
    • Specialists matched to your exact problem
    • Your details are never sold to call centers
    1 / 5
    Where is the property?

    We use your ZIP code to find waterproofing specialists who actually work in your area.

    What is your basement doing?

    Pick everything that applies — it helps the pro arrive prepared.

    Tell us about the space

    Basement type

    Property

    Approximate basement size

    1,000 sq ft
    When do you want this handled?

    Do you own the property?

    Where should we send your matches?

    Your details go only to the specialists matched to your project.

    Best way to reach you

    Secure & private. No spam — ever.

    For contractors

    Are you a waterproofing pro? Grow with homeowners already looking for you.

    Join the network for exclusive homeowner requests in your service area, plus access to commercial polyurea systems, equipment and hands-on training.

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