Epoxy injections are a reliable and effective way to repair concrete cracks in foundations and slabs. When done correctly by a trained injection technician, epoxy crack repair does not fail. Before proceeding with epoxy injection, the cause of the crack and the need for structural repair must be determined. If the crack does not compromise the structure, injection with polyurethane grouts or other non-structural materials may be a better option.
When structural repair is required, the conditions that cause the crack must be corrected before proceeding with epoxy injection. The application of such materials can be completed by a basement waterproofing contractor or a do-it-yourself homeowner. Either way, the repair of concrete cracks in the foundation or slab can be completed efficiently and effectively in as little as an hour or more. Crack injection, when done properly, should last the entire life of the structure. This type of injection is done from the inside of the basement, thus avoiding the need to excavate the foundation.
Epoxy crack injections are typically performed at lower injection pressures (20-200 psi) and with surface mounted ports. A spring-assisted dispensing tool allows complete control of injection pressures to keep them between 20 and 40 psi, the best range for complete crack filling. Epoxy injections are incredibly strong and reliable for sealing concrete cracks. If the crack has been previously injected and the original epoxy has cracked, it may be almost impossible to find the exact place to re-inject and, since the rest of the repair is a solid mass, the epoxy cannot flow to find the cracks. Dual cartridge dispensing, which uses disposable or reusable cartridges or containers, is a cost-effective and completely portable method for injecting two-component polymers. Let's compare some of the main characteristics of each type of crack injection, describing their strengths and their range of recommended applications.
For example, injecting curtain with PU gel into the space between the structure and the floor requires lower injection pressures but higher rates of material flow. Repairing concrete cracks with epoxy injection is an incredibly reliable sealant to use. Do not hesitate to contact us if you have a crack in the floor or ceiling and are wondering if an injection of concrete epoxy is suitable for sealing it.