Pagani dynamic cone penetrometer setup for geotechnical soil testing Caption Title: Pagani DCP Equipment for Soil Density Testing

Non-Invasive Foundation Repair Using Deep Soil Injection for Older Homes

Background

This 1950s brick home in Denver was experiencing noticeable foundation settlement at the rear and side walls. Cracks had begun forming, and floors showed unevenness — common issues in homes built on unstable soil in this region.

Problem & Analysis

Soil tests were conducted using a dynamic cone penetrometer (DCP), revealing weak, low-density soil well below the home’s foundation. Over time, this compromised layer had allowed the structure to sink and shift, threatening the home’s long-term integrity.


Foundation settlement in older residential areas often stems from inconsistent soil compaction at the time of construction or gradual soil movement due to freeze-thaw cycles, water drainage issues, or drought. Homes built in the 1950s often lack modern grading or site prep, which increases vulnerability over time.


Homeowners may first notice signs like sticking doors, uneven floors, or diagonal cracks in drywall. These early indicators point to
residential foundation issues that—if left untreated—can escalate into costly structural damage. Early detection and professional analysis are key to long-term stability.

Solution & Installation

StrataLock developed a targeted repair plan focused on stabilizing the subgrade. We used our deep soil injection technique and injected a high-strength, expanding geotechnical polyurethane beneath the foundation at various depths.


This
structural repair method compacted the weak soil and filled underground voids, lifting and re-supporting the home’s foundation without any excavation. The procedure was fast, precise, and ideal for residential application.

Results

StrataLock’s experienced team completed the repair in a single day with no disruption to landscaping or utilities. The home’s foundation was stabilized, and signs of movement stopped immediately.


This project showcases how
non-invasive foundation repair can be used to resolve residential foundation issues quickly, cleanly, and permanently.

Interior view of residential foundation with exposed brick and injection points Caption Title: Injection Access Points for Home Foundation Repair