Welcome! Here are the website rules, as well as some tips for using this forum.
Hot water pipes under slab - warm spot bad?
Hey guys, sorry if this isn't the right section to post and if this is a silly question. I'll try to be short.
Bilevel home heated by hot water baseboard. 2 zones and the lower level has the hot water pipes going under the concrete slab.
Anyway, I noticed in the laundry room in lower level that one tile is warm on the feet while the others are icy. I figured this was just heat radiating from one of the pipes.
However I was reading random discussions and saw that could be a sign of a corrosive water leak under the slab. Ah!
However, my boiler has a water pressure gauge and it hasn't moved from its normal range all year. Conversely, I had a pinhole leak in one of the hot water pipes a while back that was emergency repaired, and when that happened the pressure quickly dropped within the hour.
Is it possible a part of the hot water pipes is just radiating some heat into the tile? I don't know exactly where the pipes are situated underground but it's entirely possible some copper pipe is traveling under that tile to another room in that zone.
Thanks for the tips guys