(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 3 of 3

Thread: Water Heater pressure relief line covered by concrete

  1. #1
    DIY Junior Member Ron Mac's Avatar
    Join Date
    Jul 2013
    North Florida

    Default Water Heater pressure relief line covered by concrete

    My home is a two story brick. The water heater is in the middle of the downstairs in a closet under the stairwell. The line original travels inside of the foundation to a spot outside the outer wall that coincides with my breakfast nook.

    I recently had the patio on the back of my house extended. Although I showed the concrete contractor where my water heater pressure relief line came out of the brick wall, he still managed to concrete over it. The contractor claimed he couldn't find the line. Now he has passed away.

    What are my options? Do I jackhammer the patio until I find the line, or do I reroute the line? If I reroute the line, how do I go about it, seeing that there is another floor above the water heater?

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
    Join Date
    Aug 2004
    Bothell, Washington
    Blog Entries


    The relief line daylights above the ground.
    Can you go in the crawlspace, find the pipe, and determine if you can run it elsewhere?
    You can't trap it, it needs to grade downward by gravity.

    If that can't be done, there are some things that can be done.

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    While it may be nice to run that outside, if you run it into a pan then use a shutoff such as a www.wagsvalve.com to shut off the supply before it leaks so much as to damage the area, you don't need to run it outside. That is a T&P valve - temperature AND pressure safety release valve, and it should NEVER open unless something is very wrong. So, using a shutoff valve like the WAGS would force you to notice, since you'd no longer have any hot water at all, hopefully, before anything major occurred.
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014

Similar Threads

  1. Tankless water heater pressure relief valve location
    By Brodie's in forum Tankless Water Heater Forum
    Replies: 0
    Last Post: 10-14-2012, 06:08 PM
  2. Can I use a pressure relief valve to drain winter water line?
    By tuckerdog in forum Pumps and Tanks Well Forum & Blog
    Replies: 7
    Last Post: 02-29-2012, 06:05 AM
  3. Gas Hot Water Heater Tank and Pressure Relief Valve
    By skadoo323 in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 2
    Last Post: 01-13-2009, 04:52 AM
  4. inline hot water heater pressure relief drain
    By rich-pittsburgh in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 7
    Last Post: 02-23-2007, 07:02 PM
  5. New water heater still leaking from pressure relief valve
    By kb in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 8
    Last Post: 02-09-2005, 09:43 AM


Posting Permissions

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