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  • Users: Bonypor
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  1. Bonypor

    Best waterproof sealent between PVC pipe and concrete slab

    Hi, we had to insert a 4" PVC pipe in a 5" thick concrete slab at the roof deck to insert the aircon cooper tubes, etc. We drilled 4" hole in the concrete slab and inserted the 4" PVC Pipe. The pipe is shaped 7 so the rain won't fall right in the hole center. What is the best waterproof...

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