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Basement Leak Injection Process Explained


by DoItYourself Staff

The injection process is one of the most common and most effective ways of curing a basement leak. Often called basement injection, it is recommended for homeowners wanting to repair basement cracks without hiring a professional. Injectable, basement leak kits are retailed in an easy-to-understand packaging, carrying detailed instructions. The most commonly retailed form of basement leak injections are polyurethane-based kits. These are affordable, easy-to-apply and provide years of effective waterproofing. They are ideally suited for repairing minor cracks and resolving moisture-seepage issues in the basement.

Why Basement Leak Injection?

Polyurethane injections are regarded better than conventional waterproofing techniques, like repairing the cracks with hydraulic cement. The injection process is effective because the synthetic foam is delivered deep into the cracks, ensuring that hard-to-reach places are also waterproofed. Polyurethane is impermeable to water, even when exposed to sustained seepage. Unlike hydraulic cement, it is naturally unresponsive to chemical reactions associated with concrete surfaces. This makes it a perfect waterproofing material. Using the injector means you don’t need to bother about making the cement mix or using demanding tools like a chisel and drill.

Basics of Basement Leak Injection Process

It is always advisable to use a low-pressure repair kit. High-pressure kits are used for extensive repairing that is seldom required in domestic spaces. You must ensure that the crack is thoroughly cleaned and the lose debris is removed, before injecting it. Most injection kits offer surface sealers that are applied before and after injecting the site. This is to ensure that the polyurethane remains secured in its position.

If you find that the sealer is looking ungainly on the surface, it can be trimmed with a utility knife or a trowel. For insulating the cracks, it is advisable to use basement leak kits that provide an epoxy paste. Application of this paste is critical for allowing the polyurethane to enter every small crevice, ensuring better waterproofing. The injection process should be stopped when you see that some of the material is beginning to ooze out of the repair site. A basement leak site treated in this way, takes up to 24 hours to set properly and gain a firm outer surface.

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