Pool Coping

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nicpppardo

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Apr 4, 2013
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There are a few "chips" in our concrete pool coping that we need to patch. When I got closer and touched it, underneath the concrete is a very squishy type of material. What is this? Is it normal and safe to use normal concrete sealers? Our coping got eaten up a bit when randomly, with our abnormally cold weather in SoCal, salt seemed to eat away and certain spots of the concrete. I've been washing it away as best I can but keeps reappearing. Really need to get this thing sealed!!

Thank you!


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Picture attached! It is squishy like it must be foam underneath??
6uvunysa.jpg



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If you follow the expansion joint from the right, it seems to coincide with the hole. I'm thinking that it was intended to be an expansion joint there. I would suspect that the other holes might be the same thing. Is the expansion joint to the right filled with grout or flexible sealant?
 
I am going to say flexible sealant because when I press on it, it's "squishy" as well.

Another question to add on to it- here's a picture of the flexible sealant where is it cracking pretty badly.... How do I replace this? Is it ok to just replace this section? What product do you recommend or is this not a DIY type of thing?

Thanks for all of your help!

uqusasyd.jpg
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A sealant like Vulkem 45 SSL (Semi-Self Leveling) will work. You should be able to find a color that matches. You should be able to cut out the old caulk with a razor type knife. The caulk can be somewhat difficult to work with.
 
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