Case Studies & More

Issue: The pharmacy in Cascade caught fire and when the fire department came to put it out water ran from the pharmacy downhill under the library causing a void under the concrete slab on grade. Polyflow Solution: After determining the area of void under the concrete we used a two-part structural foam to inject and…

Issue: Complexes often have sidewalks or walkways through out the property. Trip and slip hazards can not only be a risk for potential lawsuits but also higher insurance premiums. Insurance companies will often do onsite inspections to determine risk. Polyflow Solution: We work with property management teams to make effective remediation plans according to risk…

Issue: Most stem walls/foundations or basements have cracks in them. You don’t always need to be concerned with the cracks but if water is penetrating through them it can cause mold, water damage and other issues and should be addressed. Polyflow Solution: We seal these cracks from inside the crawl space with a permanent pressure…

Location: Garden City Idaho Issue: This is a new construction house built next to the green belt near the Boise River. The house needed to be built above the flood plane, so the contractor built a retaining wall and back filled it with road mix then compacted it in lifts as is common and correct…

Location: Eagle, Idaho Issue: An HOA was losing large amounts of water under and around the weir. The condition of the concrete was sound but the surrounding fill was washed out. Solution We started the project by direct injection deep in the soil around the sides where the erosion had occurred; then we drilled through…

Location: Downtown Boise Idaho Issue: The Boise Coop needed a new septic tank installed in the parking lot. The parking has limited space and normally the excavation company would dig a very large hole so they can fit the safety shoring on the walls of the hole. The excavation company wanted the smallest impact on…

Locations: Nampa Caldwell Middleton Star Boise Eagle Meridian Garden City McCall Horseshoe Bend and many more locations all around the Treasure Valley Normal Sidewalk Settling Causes: The number one cause for sidewalks to settle in our area are rain gutters being installed on the high side of the sidewalk. As rain drains on the high…

Location: Meridian Idaho Issue: These apartments have a common covered front porch that is supported by structural 4×4 wooden posts, which are surrounded by a decorative siding. Each individual post sits on a below-grade concrete sono-tube foundation. This particular post had settled nearly 4 inches. The roof structure had begun to detach from the main…

Location 1: Eagle Idaho Location 2: Downtown Boise In this case study there are two jobs with the exact same issue. One company called us before they removed the concrete and the other did not. We were able to remediate both deep soil issues resulting from steps missed during the backfill process by the excavation…

Location: Caldwell Idaho Issue: There were a few small surface holes in the asphalt in a parking lot. Upon further inspection we found that some of the holes were up to 21 feet deep. The area was closed off to prevent vehicles from entering the area of concern. Polyflow Solution: There was power, communication and…

Location: Boise Idaho Issue: This project involved a three-story apartment complex. During the initial excavation phase of the construction process the compaction inspection was overlooked. The construction of the structure was completed; one year after the certificate of occupancy was given, the city noticed the missing compaction test. A geotechnical engineer was employed to test…

Location: Near Ontario Oregon Details: Shop dimensions 90’W x 120’L x 18’ H Sub-grade was an old horse arena. Approximately 4,300 feet of elevation High snow fall area near The footing dimensions for the shop foundation was 24 inches wide by 24 inches deep. Issue: The home owner expressed the concern that the footing for…

Location: Weiser Idaho Issue: The transfer station is a place that rural dump trucks take the waste and dump it into an open concrete area then from that open area it gets pushed into trucks that transfer it to an offsite landfill. This particular transfer station had issues where the concrete pad was settling and…

Location: Boise Idaho Issue: Both the garage floor as well as the driveway settled more than 6 inches causing an extreme trip hazard and a major inconvenience for access into the garage. Not only did the garage floor settle but there was a large void under it that needed to be filled as well. Polyflow…

Location: Nampa Idaho Issue: The homeowner built a retaining wall on the edge of their patio for privacy but the weight of the retaining wall caused the patio to settle on the outside and it caused the same slab to heave on the inside causing a trip hazard in the walking area. All of the…

Location: Idaho City Idaho Issue: During the initial concrete foundation construction phase the concrete contractor installed the sub-grade support piers 3 feet below the level they should have been installed. The ground level was brought up with road mix and compacted up to grade under the above grade roof support pillars and the 4 inch…

Issue: The homeowners front yard and front porch began to show holes and visual signs of settling and movement from their original finished grades and heights. During our initial on-site inspection some of the depressions were tested with a simple soil hand probe to a depth of approximately 5 feet. In the hand probed depressions…

Location: Garden Valley Idaho Issue: The property is located in a mountainous area. An area was cleared for a 16W x 32L shed. Large cement barrier blocks were brought in by the excavator before back filling the building site. The excavation contractor used native soil from the property for back fill material; the native soil…