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Floor/wall Seam – Leak where Floor and Wall meet - MA, RI, NH & CT

Joseph Coupal - Thursday, September 18, 2014

Why do Floor/Wall Seams Leak?

A common homeowner problem is a water leak between where the cement wall meets the cement floor. This area leaks due to the fact the cement wall rests on a footing. During the construction phase, the footing should be perfectly cleaned of all soil particles before the forms are placed on the footing and the concrete is poured between the forms. Over time, the particles of soil will erode away and water will seep under pressure between the footing and the wall. Once the wall is placed onto the footing and is cured the floor is then poured. The concrete that is poured has water in it. Water in the concrete evaporates causing the concrete floor to shrink which creates a gap along the floor/ wall seams. This will allow water to leak into your basement at the floor/wall seam.

How do I pinpoint a floor/wall seam leak in my basement?

First, go outside and check the exterior above grade foundation see if there are any cracks. If this is not the case, turn a garden hose and put in on the ground in the area where you see water. Next, wait 45 minutes and turn it off for 15 minutes (repeat 2-3 times if necessary) and see if any water comes in the basement.

How to Floor Wall Seam Leak Repaired?

With our 20+ years of experience, we inspect each floor/wall seam and determine the specific type of material to be used. Our A-1 floor/wall seam repair will utilize an electric pump to fill in the voids between the floor, the wall, and the footing. Some leaking floor/wall seams are repaired with polymers and others with a hybrid epoxy material. Whether you live in Waltham, MA Cumberland, RI Nashua, NH or Hartford, CT if you have water in your basement or a cold joint needing repair, contact A-1 Foundation Crack Repair today! A-1 Foundation Crack Repair, the basement waterproofing and cold joint repair experts.


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A-1 Foundation Crack Repair, Inc. is a fully registered home improvement contractor. Contact us today to talk to a knowledgeable, master waterproofing professional.