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Holdfast Basement Waterproofing

Basement waterproofing

Leaking wall crack repair

Leaking crack repair seals non-structural cracks in poured concrete walls, usually by injecting flexible polyurethane that expands to fill the crack through the wall's full thickness. Cracks that are widening, displaced or horizontal need a structural assessment first.

By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.

Typical time
A few hours.
Repair or replace
Inject non-structural cracks; assess structural ones.

Call about leaking wall crack repair

(833) 460-4463

By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.

Mention leaking crack and your ZIP.

Poured concrete walls commonly develop vertical shrinkage cracks that leak in wet weather. Injection is quick and effective for these.

Block and stone walls leak through joints and porous units rather than single cracks, so drainage is usually the better fix there.

Leaking Wall Crack Repair at a glance

What it is
Leaking crack repair seals non-structural cracks in poured concrete walls, usually by injecting flexible polyurethane that expands to fill the crack through the wall's full thickness.
Service category
Basement Waterproofing

What are the signs you need leaking crack help?

  • Water trickling from a vertical crack
  • Damp streak below a crack
  • Crack that leaks only in heavy rain

Quick answers

What should you know about leaking wall crack repair first?

How long leaking wall crack repair takes

A few hours.

When leaking crack can wait, and when it can't

Soon; before the next heavy rain.

Fix or replace leaking crack?

Inject non-structural cracks; assess structural ones.

Why leaking crack happens

Shrinkage cracks in poured walls.

The work

How is leaking wall crack repair done, step by step?

  1. 1

    Assess

    Confirm the crack is non-structural.

  2. 2

    Inject

    Ports installed; polyurethane or epoxy injected.

  3. 3

    Finish

    Ports removed and surface cleaned.

What affects the cost of leaking wall crack repair?

Driven by crack count and length.

  • Number and length of cracks
  • Wall type
  • Access

Is this service available near me?

Location is only used to find the service area nearest you. It stays on your device and isn't stored.

Happening right now? 24-hour emergency service is the faster route than a scheduled visit.

What do homeowners ask about leaking wall crack repair?

Can I seal a crack from inside with hydraulic cement?

It may slow a leak but often fails because it doesn't fill the crack through the wall.

Epoxy or polyurethane?

Polyurethane is flexible and suited to leaks; epoxy bonds the wall for strength.

Why do basement wall cracks leak?

Cracks give water under pressure a path through the wall, especially during heavy rain and snowmelt when soil is saturated.

What affects the cost of crack repair?

Number and length of cracks, wall type, whether injection or excavation is needed, and access.

How long does crack injection last?

Properly installed polyurethane or epoxy injection is intended to last many years.

Can cracks in block walls be injected?

Injection works best in poured concrete. Block walls usually need drainage or other methods because water travels through hollow cores.

Is a leaking crack a structural problem?

Not necessarily. Many vertical shrinkage cracks leak without being structural. Horizontal or widening cracks need structural assessment.

Should I patch a leaking crack from outside?

Exterior repairs work but require excavation; interior injection is usually faster and less disruptive for poured walls.

Where can I verify this information about your area?

  1. 1USDA Natural Resources Conservation Service: Web Soil SurveyLook up soil drainage class and shrink-swell potential for any lot in your area.
  2. 2NOAA National Centers for Environmental Information: U.S. Climate NormalsAverage precipitation, snowfall and temperatures for weather stations near your area.
  3. 3U.S. Environmental Protection Agency: MoldGuidance on moisture control and keeping indoor humidity low to prevent mold.
  4. 4Federal Trade Commission: Hiring a ContractorWhat to check before hiring: licensing, insurance, written estimates and payment terms.

Service area

Where is leaking wall crack repair available?

Where leaking wall crack repair is most often needed

Available in every state

Calls are connected with an independent contractor that serves your ZIP code, anywhere in the U.S.

Midwest & Great Lakes

Illinois · Indiana · Iowa · Michigan · Minnesota · Missouri · Nebraska · North Dakota · Ohio · South Dakota · Wisconsin

Texas & the Southern Plains

Arkansas · Kansas · Oklahoma · Texas

Mountain West & Southwest

Arizona · Colorado · Idaho · Montana · Nevada · New Mexico · Utah · Wyoming

Pacific Coast & Northwest

Alaska · California · Hawaii · Oregon · Washington

Call about a leaking crack

Shrinkage cracks in poured walls.

By calling, you agree to be connected with an independent waterproofing contractor, who may call or text you back about your request at the number you call from. Calls may be recorded for quality and routing. Consent is not a condition of any purchase; you can opt out at any time, and message and data rates may apply. Privacy policy.

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