About injection waterproofing

Generally, injection waterproofing is used to fill and seal cracks and crevices that have form in foundations due to water seepage.

Injection waterproofing is made from a lightweight polyurethane compound that expands to twice its original size as it dries. There are several non-toxic, environmentally safe products available at many nationwide home improvement stores.

Polyurethane injection can seal the openings of many small foundation cracks. However, if a sealant has already been used, then it may be difficult to evenly inject the compound. Two types of systems are available for retail purchase; single caulking style cartridges or dual side-by-side cartridge systems. Both systems are manually and easy to use.

It is important to keep the area dry that you are repairing when working with either injection waterproofing method. This means that you will have to temporarily block any water seepage in that area. In addition, you will also have to clean and dry the area that is to be repaired. If the water flow is through a small hole, then temporarily plug the hole with caulk, or plumbers' putty. For cracks, which are narrow, or if you are repairing a hard-to-reach place, you can reach the area by attaching a flexible hose to the injector nozzle.

No matter which waterproofing system you choose be sure to do your research. When repairing cracks caused by water leakage, you have to know where the leak is coming from in order to choose the proper method of repairing it. This will also assist you in ensuring that you purchase the right waterproofing materials for the repair. The National Association of Waterproofing and Structural Repair Contractors (NAWSRC) can answer all of your questions on waterproofing. Please visit their website at: nawsrc.org

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