cement walk seperator gone

Old 09-02-15, 02:10 AM
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Join Date: Aug 2007
Location: Virginia, USA
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cement walk seperator gone

Put in a new cement porch a few years ago. At 2 major sections I separated the cement (entirely) with that sort of tar impregnated paper - about 1/2 in. thick. It has eaten away by the element now so there is just a 1/2 in. gap between those concrete sections. I will be laying a dimple underlayment followed by some slate next year (skim coating each in place) but wanted to put something between these cement pieces. Just outdoor caulk or ???
Old 09-02-15, 06:10 AM
Join Date: May 2015
Location: USA
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Insert foam backer rod so it's about 1/2" below the top of the joint and then caulk with Big Stretch caulk in the color of your choice. Make sure everything is clean and dry first.

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