Re: Sweaty pipe in slab hole
I think that's a good idea. It sounds like moist air is coming up from below the slab and condensing on the pipe. Typically, you don't want the concrete to be in direct contact with the pipe so that if there's any movement it doesn't damage the pipe. You can isolate it by wrapping black vinyl tape (you can get black tape for plumbing at any plumbing supply place) around the pipe.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.