Urethane and Epoxy Injections
Seal the crack. Stop the water. Restore the strength.
Urethane injection — also known as polyurethane or grout injection — is the most common way to seal and fill a crack in concrete and foundations. Its popularity comes from its flexibility and versatility across a wide range of applications.
Polyurethane injection grouting is a waterproofing technique: a polyurethane mixture is inserted under pressure into the cracks of a structure, where it reacts, expands, and toughens to stop water from flowing through structural joints and cracks.
For structures damaged by overload, vehicle impact, earthquake, or other events, epoxy injection is an effective structural repair — it essentially welds the concrete back together and works well for horizontal, vertical, and overhead applications.
What injection solves
- Sealing active water leaks in cracks & joints
- Polyurethane (grout) injection for waterproofing
- Structural epoxy injection to re-bond concrete
- Foundation crack repair
- Below-grade & underground leak sealing
- Cracking from overload, impact & seismic events
- Horizontal, vertical & overhead applications
- Control & construction joint sealing
Recent work
Frequently asked questions
What's the difference between urethane and epoxy injection?
Urethane (polyurethane) injection is flexible and expands to seal active leaks and moving cracks — it's the go-to for stopping water. Epoxy injection is rigid and structural — it welds a crack back together to restore load capacity. We use whichever the situation calls for.
Can you inject a crack that's actively leaking water?
Yes — polyurethane injection is designed to stop water flowing through structural joints and cracks, reacting and expanding on contact.
Does injection work overhead and on walls?
Yes. Epoxy and urethane injection work for horizontal, vertical, and overhead applications.
Will this fix a structural crack?
If the crack is structural and stable, epoxy injection can restore the concrete's monolithic strength. If there's active movement or water, we address that first with urethane. We always assess before recommending.
Have a concrete problem worth solving?
From emergency structural repair to full containment retrofits, our crews self-perform the work and stand behind it. Tell us what you're dealing with and we'll schedule a free on-site condition survey.