Health & Fitness
Low Pressure Injection for Foundation Crack Repair
Low pressure injection is a form of crack repair that is used for non-structural cracks to protect against water seepage and soil gas intrusion.
Low pressure injection is a form of crack repair that is used for non-structural cracks. Because non-structural cracks are not threatening the integrity of the foundation, the concerns are mainly to protect against water seepage and soil gas intrusion. For cracks up to ¼” wide, low pressure injection is an excellent way to address these concerns.
TWO TYPES OF NON STRUCTURAL EPOXY CRACK REPAIRS
Nonstructural settlement cracks can be defined as having a small width typically 1/16” to 1/8” and not extending past the foundation into the structure. In masonry foundations such as CMU, cinder block or brick, settlement cracks typically run vertically or diagonally.
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1. Surface crack repair. The area is cleaned out and a topical application is applied to the surface. Two part hardened epoxy is used to fill the void to the surface of the concrete.
2. Injection crack repair. Using two-part low-viscosity crack injection epoxy is designed to repair cracks in concrete. Low pressure injection is suitable for repair of cracks ranging from up to 1/4” that are dry, damp or wet.
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Two types of low pressure injection crack repairs are epoxy and urethane
Both epoxy and urethane can be used to stop water and help to minimize soil gas intrusion.
- Urethane foam is expansive and fills the void inside the wall and past the wall. Because Concrete Masonry Units (CMUs) are hollow, expansive urethane foam repair could become very expensive.
The urethane foam that is used by A-1 Basement Solutions is hydroactive, meaning that it reacts to water. The crack is first filled with water so that when the urethane is introduced it reacts to the water and expands to fill the crack. The urethane goes all the way through the crack to the dirt and fills the space.
- Epoxy has bonding characteristics that are well suited for crack repair. A two part epoxy system consists of resin and hardener. When two part hardened epoxy is applied to a crack in the concrete, it fuses the concrete together making a repair that is harder than the original concrete.
A two part hardened epoxy is injected under low pressure into the concrete crack in the wall from inside the basement. This epoxy is introduced directly into the crack or through small ports glued over the crack.
Should I get my Foundation Inspected?
A-1 Basement Solutions provides free foundation inspections to New Jersey homeowners. Contact A-1 Basement Solutions at 908-322-1313, or info@A-1Basements.com for a free in-home inspection and detailed quote.
A-1 gives full service guaranteed work and competitive pricing every day.
We do everything for you. By taking care of all the details, A-1 Basement Solutions makes the job worry free. Our motto is No Problems…Just Solutions.
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