Some grouting jobs call for a material that expands fast, cures fast, and lifts what it's placed beneath.
Solutions for this Service
Settlement Remediation
Structural Re-Leveling
Sinkholes
Void Formation
Related Industries
Transportation
Commercial and Institutional
Need a Site Assessment?
800-240-7868
Some grouting jobs call for a material that expands fast, cures fast, and lifts what it's placed beneath. Polyurethane grout is built for exactly that: a two-part polymer that expands up to 20 times its original volume once injected and cures to structural strength within minutes. URETEK applies this material through URETEK Deep Injection® (UDI), its patented process for lifting settled structures and densifying weak soil, without excavation.
A situation that needs fast, structural lift or fill calls for a specific kind of grout. Here's what polyurethane grouting is built to handle.
Settled or uneven structures that need to be lifted back toward grade quickly
Underground voids that need filling with a material that expands to reach the full shape of the space
Weak or loose soil that needs added density and bearing capacity in a short timeframe
Conditions where a slower-curing or non-expanding grout wouldn't deliver the lift or fill required
These are the conditions where an expanding, fast-curing polyurethane grout is the right material choice.
A settled slab, pavement section, or foundation that needs lifting, not just sealing
An underground void with an irregular shape that a rigid fill material would miss
A tight project timeline where a material that cures in minutes, not days, is required
Wet or flowing water at the injection site, where a hydro-insensitive material is needed
A structure that needs to reopen or return to service shortly after treatment
Soil that needs both densification and a controlled lifting force in the same application
Why polyurethane grout is chosen when fast, structural lift or fill is the goal.
Expands to fill irregular spaces completely. Polyurethane grout expands up to 20 times its original volume once injected, reaching into narrow channels and irregular voids that a rigid fill material would miss.
Provides structural, load-bearing strength, not just fill. The cured material is designed to be a permanent structural component, not a temporary filler, which matters where the treated area will carry ongoing load.
Installed through small holes with no excavation. Injection uses holes as small as 5/8 inch, so the surface above stays largely undisturbed during treatment.
Cures to structural strength in minutes, not days. URETEK 486 Star® reaches 99% of its final strength within minutes of injection, allowing sites to return to service quickly.
Holds its strength even in wet or flowing water. URETEK 486 Star® is hydro-insensitive, meaning it maintains strength even when injected directly into flowing water, unlike some grout materials.
Polyurethane grouting is the right material choice when a project needs fast, structural lift or fill, whether that's raising a settled slab, filling an irregular void, or densifying weak soil under a tight timeline. It's the material class behind URETEK Deep Injection® (UDI), URETEK's proprietary process for applying it.
It's not the right material when the goal is sealing a fine-grained soil or a specific joint through permeation rather than expansion; acrylate gels and urea-silicates, used in Chemical Grouting and Permeation Grouting, are built for that instead. It's also not the fit when the goal is a continuous vertical barrier along an excavation line, which Curtain Grouting is built to form.
For URETEK's actual process, real project results, and case studies using this material, see Deep Injection (UDI), URETEK's patented application of polyurethane grouting technology.
1
Evaluate
A URETEK project manager studies the site and reviews soil conditions, not a salesperson working from a standard package.
2
Deploy
Crews mobilize on the schedule the site needs, including nights, weekends, or holidays, in a self-contained unit.
3
Drill
Small holes are drilled in a pattern designed around the structure's load and the treatment area.
4
Inject
Polyurethane grout is injected and expands up to 20 times its original volume, filling voids and densifying soil.
5
Clean Up
There's no excavation to backfill and no trench to restore, so cleanup is minimal.
6
Validate
The client confirms the treated area is stable before the crew leaves.
URETEK applies polyurethane grouting through its patented Deep Injection (UDI) process across transportation and commercial projects nationwide.
Yes. URETEK 486 Star®, the specific polyurethane material URETEK uses, cures to 99% of its final strength within minutes and is designed as a permanent structural material, not a temporary filler. Public Works and Federal projects carry a two-year warranty on the finished work.
Polyurethane grout expands, up to 20 times its original volume, and cures within minutes, which makes it suited to lifting settled structures and filling voids quickly. Acrylate gels and urea-silicates work differently: they permeate fine soil pore spaces to bind or seal rather than expanding.
Yes. URETEK 486 Star® is hydro-insensitive, meaning it holds its strength even when injected directly into flowing water, which is not true of every grout material.
Yes. Because injection uses small holes rather than open excavation, and the material cures in minutes rather than days, sites can generally stay in use throughout treatment and reopen shortly after the work is complete.
In practice, yes. Polyurethane grouting describes the material class, an expanding, high-density polyurethane resin. URETEK Deep Injection® (UDI) is URETEK's patented, proprietary process for applying that material to lift settled structures and densify soil.
Get a settled structure or void evaluated for polyurethane grouting. URETEK crews respond fast, including emergencies.
Request an Evaluation
URETEK
Ground improvement solutions engineered for performance.
Contact Us
Find Local Experts
13900 Humble Road, Tomball, TX 77375
Services
Solutions
800-240-7868
