Chemical Grouting

Chemical grouting is used for the purpose of consolidating shallow soils that are above the compaction zones created by pressure grouting. There are many different types of chemical grouting including expandable polyurethane foam and an epoxy material. The type of chemical grouting used will be dictated by the location, soil type and structural integrity. The most common chemical grout used in the industry, which NEC Keystone introduced in 2004, is a polyurethane foam injection. NEC Keystone brought Uretek from Houston, TX to do the first job with Ran Tannous Engineering in Orlando Florida. Since that time polyurethane foam injection has been accepted as a form of consolidation of shallow soils beneath foundations and slab by the geotechnical engineers in Florida.

“NEC Keystone, Inc. brought the innovative process called the URETEK Method to the engineers and insurance companies of the West Coast and Central Florida - FIRST. I am confident that if you had not supported the URETEK Method and sold the idea to the engineers and insurance companies that it would not be in use by the residential sector today.”

Mike Trout, Owner Uretek Central Florida

The polyurethane foam injection works on the principle of injecting 2 different inert chemicals beneath the foundation where the 2 chemicals are mixed and create a reaction which causes the polyurethane foam to expand and consolidate the soils. The key advantages of this method are:

1. Minimal Disruption – Most projects are finished in 1 or 2 days and avoid relocating your family and the hassle and expense that goes with it. You also do not have to move furniture or replace carpet and tile during the procedure. The entire injection process is non-intrusive, dust-sensitive, and does not stir up allergens. Typically, two to three man crews will be required to complete your repair, reducing dirt, traffic, and disruption inside your home or on your driveway.
   
   

2. Environmentally Friendly – There is little waste or debris created using a polyurethane injection procedure. The minimal dust created from drilling small 5/8" injection holes are easily vacuumed up, eliminating allergens. Lastly, the unique expanding material injected under your foundation does not pollute ground water and is impervious to rodents and insects.