Epoxy resin crack injection repair – Your best bet to seal a horizontal structural crack
Epoxy crack injection is a professional method used to seal and bond certain foundation cracks. Dryshield provides epoxy crack injection for foundation cracks that are suitable for epoxy injection after inspection.
At a glance
• Service: epoxy crack injection
• Also searched as: epoxy crack injection repair, epoxy foundation crack injection, crack injection
• Best for: foundation cracks that can be repaired with epoxy injection
• Goal: seal the crack and restore a solid bond through the crack line
• Next step: book a free inspection and written estimate
For full details, visit our basement waterproofing page.
Epoxy Crack Injection
Epoxy crack injection is used to repair foundation cracks by injecting epoxy along the crack line so the crack is sealed and bonded. Epoxy crack injection is commonly requested for foundation crack injection when the crack conditions are appropriate for epoxy.
Dryshield focuses specifically on epoxy crack injection services. We do not sell products. We provide the inspection, the injection work, and the completed repair.
When Epoxy Crack Injection Is Recommended
Epoxy crack injection is recommended when inspection confirms the crack is a good candidate for epoxy injection. During the inspection, we confirm:
the crack location and direction
the crack length and access
whether the crack conditions suit epoxy crack injection
If epoxy crack injection is not the correct match for the crack conditions, we will tell you during the inspection before any work starts.
Benefits of Epoxy Crack Injection Repair
Seals the crack line through the foundation wall
Creates a strong bond along the crack path
Helps prevent the crack from reopening at the same line
Completed from inside the basement in most cases
Our Epoxy Crack Injection Process
Crack inspection
We confirm the crack is suitable for epoxy crack injection and review the repair plan.Crack preparation
We prepare the crack area so the epoxy crack injection can be completed properly.Epoxy crack injection
We inject epoxy along the crack path to seal and bond the crack line.Finish and clean-up
We finish the repair area neatly and leave the workspace clean.
Epoxy Crack Injection Cost
Epoxy crack injection cost depends on the crack length, crack location, and access. After inspection, Dryshield provides a clear written estimate for epoxy crack injection repair based on your foundation crack.
Epoxy Crack Injection FAQs
What makes epoxy different from polyurethane?
Epoxy is a structural adhesive. Once it cures, it is actually stronger than the concrete itself. Polyurethane is a flexible sealer used primarily for waterproofing.
When is epoxy injection required?
Epoxy is used when the structural integrity of the wall is compromised—specifically for cracks that are “moving” or for horizontal cracks caused by pressure.
Can epoxy be injected into a wet crack?
Standard epoxies do not bond well to wet surfaces. If a crack is actively leaking, it must be dried first, or a moisture-tolerant epoxy must be used.
Does epoxy injection stop water leaks?
Yes, epoxy creates a solid, rigid seal that is waterproof. However, if the foundation continues to shift, the rigid epoxy may crack again, whereas polyurethane would flex.
How strong is the bond of epoxy injection?
A properly injected epoxy bond is typically 2 to 3 times stronger than the original concrete, effectively “welding” the crack back together.
How do you prepare a crack for epoxy injection?
Technicians clean the crack, attach “ports” (entry points) along the crack, and then seal the surface with a thick epoxy paste to keep the liquid epoxy inside during injection.
Is epoxy injection better for basement walls or floors?
It is excellent for both, but it is the preferred method for structural wall repairs where “stapling” or “welding” the concrete is necessary.
Can epoxy be used for wide cracks?
Yes, there are different “viscosities” (thicknesses) of epoxy. Thin epoxy is used for hairline cracks, while thick, gel-like epoxy is used for wider gaps.
How long does epoxy take to cure?
Initial curing happens within a few hours, but it typically takes 24 hours to reach full structural strength.
What are “injection ports”?
Injection ports are small plastic nozzles glued over the crack. They allow the technician to pump the resin into the wall in controlled stages.
Can epoxy injection be used on pools or tanks?
Yes, epoxy is frequently used in industrial and commercial settings to repair cracks in concrete pools, water tanks, and dams due to its high strength.
Reviewed by: Jacob Penny Senior Waterproofing Technician, Dryshield Basement Waterproofing
Last updated: December 2025
