Garage Floor Seams: To Cover, Or Not To Cover ?

MM99July 22, 2013

Hi All:

I live in New England in a townhome that was built in 2005. I am planning to do an epoxy paint on concrete garage floor. I noticed that in my garage the concrete on the floor does not meet the concrete on the walls - its separated by some kind of black insulation/backer board kind of material. While degreasing and etching the floor, I noticed that water hitting the edges was getting drained out at these places. I was originally planning on using an epoxy-based concrete repair kit to cover all these open seams. However, now I am not sure if I should cover these or not ? In addition, I would also like to know what purpose they serve and if garage floor experts on the forums recommend leaving them the way they are ?

Thanks,

MM

Pictures:
1. http://www.flickr.com/photos/47901026@N05/9344110375/in/photostream/
2. http://www.flickr.com/photos/47901026@N05/9346899682/in/photostream/
3. http://www.flickr.com/photos/47901026@N05/9346899834/in/photostream/
4. http://www.flickr.com/photos/47901026@N05/9346900048/in/photostream/

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randy427

As the floor expands due to temperature changes, this compressible material helps keep the floor from fracturing, or fracturing the foundation.
The floor should be sloped to a drain or towards the garage door to keep any water from pooling, but a little drainage through the expansion material can help keep the floor dry at the wall base. I wouldn't cover it.
However, this should not be the only way water is drained from the floor unless it is plumbed out as part of the drainage system.

    Bookmark   August 16, 2013 at 9:57AM
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