Foundation Crack Injection Services


Polyurethane Crack Injection for Poured Foundations


Akron, Canton, Cuyahoga Falls, Stow, Massillon, Barberton and surrounding areas

Stop Water Intrusion at the Source


If you’re noticing water seeping through cracks in your basement walls, you’re not alone. Many modern homes built with poured concrete foundations develop vertical cracks over time, and those cracks are one of the most common entry points for water.


At Basement Masters, we offer professional foundation crack injection services using high-performance polyurethane to seal cracks from the inside out—stopping leaks permanently and protecting your basement from future water damage.


What Is Foundation Crack Injection?


Foundation crack injection is a specialized repair method used to seal cracks in poured concrete walls. Using advanced polyurethane materials, we inject the crack under pressure, allowing the sealant to fully expand and fill the entire depth of the wall.


Once cured, the material creates a flexible, watertight seal that prevents any further moisture from entering your basement.


This process is ideal for:


  • Vertical cracks in poured concrete foundations
  • Active water leaks
  • Seasonal seepage or damp walls
  • Preventative sealing before finishing a basement


Waterproofed basement bricks

Why Poured Foundations Crack


Unlike older block foundations, newer homes often feature poured concrete walls. While strong, these walls naturally develop cracks due to:


  • Concrete shrinkage during curing
  • Soil movement and settling
  • Hydrostatic pressure from groundwater
  • Temperature fluctuations


Even small cracks can allow water intrusion, which can lead to mold, structural issues, and costly repairs if ignored.



Signs You Need Crack Injection


If you notice any of the following, it’s time to address the issue before it gets worse:


  • Water is leaking through the wall cracks
  • Damp or musty basement smells
  • Visible vertical or diagonal cracks
  • Efflorescence (white, chalky residue)
  • Water stains or discoloration on walls


Our Polyurethane Crack Injection Process

At Basement Masters, we use a proven, professional process to ensure long-lasting results:


1. Crack Assessment

We inspect the foundation to determine the size, depth, and cause of the crack.


2. Surface Preparation

The crack is cleaned and sealed along the surface to prepare for injection.


3. Injection Port Installation

Specialized ports are placed along the crack to allow for even distribution.


4. Polyurethane Injection

We inject expanding polyurethane that penetrates deep into the crack and fills all voids.


5. Final Seal & Cleanup

Once cured, the ports are removed, and the surface is sealed for a clean finish.


Why Polyurethane Injection Works

Polyurethane is the preferred material for sealing leaking foundation cracks because it:


  • Expands to fill even the smallest gaps
  • Remains flexible as your foundation shifts
  • Creates a watertight barrier
  • Works even in actively leaking cracks


This ensures a long-term solution—not just a temporary patch.



Ideal for Basement Finishing Projects

Planning to finish your basement? Crack injection is a critical first step.


Sealing foundation cracks ensures your investment is protected from hidden moisture issues that could damage drywall, flooring, and insulation down the line.

wet basement walls

Foundation Crack Injection FAQs

  • How long does crack injection last?

    Polyurethane crack injection is designed to be a long-term solution and can last for decades when properly installed.

  • Can you fix a leaking foundation crack from the inside?

    Yes, polyurethane injection seals the crack from the inside out, stopping water at its entry point.

  • Is crack injection better than sealing from the outside?

    For most vertical cracks, injection is more cost-effective and equally effective without excavation.

  • Are foundation cracks normal?

    Yes, especially in poured concrete foundations. However, they should always be sealed to prevent water intrusion.

Why Choose Basement Masters for Your Foundation Crack Injection Services?


With over 35 years of experience, Basement Masters understands how to properly diagnose and fix foundation issues—not just cover them up.



  • Experienced, local team
  • Proven waterproofing solutions
  • High-quality materials
  • Honest recommendations
  • Work backed by a guarantee


We don’t just fix the symptom—we solve the problem at its source.


To start things off on the right foot, we can provide you with a free basement inspection to get an idea of the severity of the problem at hand. From there, we can answer questions and give you a free written estimate. Working with Basement Masters LLC means no surprises, no games, and no gimmicks! Call us today to put our knowledge and experience to work for you.


Call us today at 330-735-6547!


We're proud to provide foundation crack injection services to homes and homeowners throughout Akron, OH; Cuyahoga Falls, OH; Hudson, OH; Fairlawn, OH; Barberton, OH; North Canton, OH; Canton, OH; Massillon, OH; Stow, OH; and Green, OH.


A free inspection and free written estimates are available!


Call or Contact Us For A FREE Basement Crack Injection Services Estimate!

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