This is about my attempt to remove concrete that had cured in a shower drain trap. The concrete had been in the trap for more than 2 years. There was a small flow in the drain. It would drain a 3" shower depth in 20 or so minutes. Of course it only took a minute or so to flood that deep. This would make taking a shower pretty difficult. I used a product called "Speedy Klean Concrete Dissolver". It is a non acid product that claims to dissolve mortar, grout and cured concrete. I had thought about using various acids to attack the concrete in the trap but was concerned about harming the other pipes. I had already tried all of the types of drain cleaners, plungers, a commercial powered snake and the products that screw onto your garden hose and force water down the drain. I did rent and use a sewer jetter which I would recommend over using a snake anyday. After the concrete was removed I cleaned the pipes with a radial tip. The drain flow is now better than just about any drain I have ever seen. I would try this technique before giving in to destructive techniques. Total cost on the tool rental was $78.00. I believe the Concrete Dissolver was $13.00.

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