+ Reply to Thread
Results 1 to 4 of 4

Threaded View

  1. #1
    Join Date
    Nov 2010
    Posts
    1

    Default Sweaty pipe in slab hole

    2nd floor washer drain pipe was misplaced in slab and moved during construction to be correctly placed within the wall that is between our dining room and the garage. However, concrete was not poured up against the pipe, and the remaining hole is about the size of my hand, and I can touch the rocks which are under the slab. Initially, a faint smell of mildew existed but no visible water damage. I opened up the wall on the garage side and easily cleaned up minimally damp drywall and mildew. Two plumbers looked at the problem and agreed upon a coupling to "fix the leak". I left the wall open and the pipe continued to sweat the exact same as before the coupling was installed. I noticed the sweating always is at and below the slab level and it was never related laundry frequency. Sweating does appear to be related to the amount of moisture in the ground, i.e. after rains and especially during cooler air temperatures. Also, the hole is warm and humid. Should I just pour concrete into the hole and up to the pipe to prevent the warm air from condensing with the colder air?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	garage floor 008.jpg 
Views:	36 
Size:	50.2 KB 
ID:	3780   Click image for larger version. 

Name:	garage floor 009.jpg 
Views:	37 
Size:	67.0 KB 
ID:	3781  
    Last edited by mspadafora; 11-18-2010 at 11:03 PM. Reason: Adding pictures and clarifying info.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •