How to Stop Basement Wall Seepage

Published Sunday 24th of November 2013 // Updated Friday 5th of May 2017

Topics: diy, how to

Basements and cellars are often the weakest spots in a house, leaving our homes open to damage from moisture, harmful gases, and other various ills. They often smell musty, as moisture seeps in through the floors or walls to pool and stagnate. We often store our valuables in our basements, leaving antiques, collections, and furniture sitting down there to save space in our homes. Water seeping through the basement walls could irreparably damage your homes foundation, as well as the various items stored in the basement.

As most basements are made of poured concrete, the chances of water seepage through the walls are great. This is especially true if the walls have not been treated with a concrete sealer. Concrete, while strong and durable, is filled with a large number of extremely small pores that are natural to its creation. The various materials and compounds within the concrete react together, leaving a number of small air bubbles throughout the material.

These small air bubbles, though harmless to the concrete, can allow water and gases to travel through the material. The best way to take care of this issue is to prevent it in order to defend against it. Using a quality concrete sealer is integral to the strength of your concrete and the safety of your home. For basement walls, the best choice in concrete sealers is a silicate/siliconate-based solution.

However, if there is the potential for water seepage in through a crack in the walls you need to seal the crack first using a concrete crack sealer. This step, while effective, will not stop the problem from recurring on its own. In order to stop future water issues in your basement, you must use a waterproofing silicate/siliconate-based sealer, such as Lithi-Tek 9500. These sealers will penetrate through the pores of the concrete, react chemically within the material to densify and strengthen the concrete while helping prevent water damage that could lead to such problems as the build-up of mold and mildew.

Lithi-Tek 9500

Waterproofer & densifier

Tags: abrasion resistant, basement wall, concrete densifier, concrete sealer, lithi-tek 9500, organic growth resistant, penetrating sealer, vapor barrier, water based, water beading effect, water repellent sealer, waterproof sealer

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