There are many low-pressure crack injection kits which come with simple instructions so the homeowner can repair cracks in poured basement walls or retaining walls, gaps between walls and the ceiling and around pipe penetrations. The homeowners can avail of these to repair cracks with professional results at a fraction of the cost.

Advantages of Concrete Crack Repair Kits

Modern concrete repair kits contain polyurethane foam, which fills even a 24-inch thick wall. The application is much relatively simple and mainly, the polyurethane foam remains flexible to allow for the natural movement of concrete. There are crack injection kits that seal both hairline and wide cracks, be it wet or dry ones and these require no drilling as the injection ports are glued on, offering a permanent solution. These come with dual cartridges and a mixing nozzle to ensure precise mixing of the polyurethane polymers and a permanent seal. Standing apart from this option is the surface sealer and adhesive which is easy to peel and use: it can be peeled off together with the injection ports in one piece and is popular because it leaves a neat and clean concrete surface - no chiseling or grinding needed. This requires no hand mixing so is not messy at all.

How to Repair Concrete Cracks

Most high grade kits for concrete come equipped to deal with cracks up to 10 feet and all that is needed is nit rile gloves, safety glasses and a drop sheet with the skill to use a conventional caulking gun. Patience is required to ensure that the wall surface around the crack is clean, dust-free and dry and then gluing injection ports on top of the crack, before covering the crack with a layer of epoxy paste. This takes about 4-5 hours to cure and then the injection of the polyurethane resin into the bottom injection port can be started. When the polymer starts coming out of the higher port, cap the port and move on to next the higher port until the whole crack is filled. The curing will take another 3 hours and then the injection ports can be knocked off.

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