Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-17-2007, 01:53 AM   #1
Member
 
Join Date: Feb 2007
Posts: 118
Share |
Default

Water from cold water faucet goes from cool to hot to cool


With summer almost here, I've noticed that water from my cold water faucets starts out cool, then after a few seconds, it becomes rather hot and stays that way for maybe 20 sec before becoming cool again. I guess this is due to the main water line for the house being routed through the uninsulated attic above the garage. Is insulating this line likely to help? If so, what are my insulation options?

tima2381 is online now   Reply With Quote
Old 05-17-2007, 05:51 AM   #2
Long-Time DIYer
 
Mike Swearingen's Avatar
 
Join Date: Mar 2005
Location: On Albemarle Sound In Northeastern NC
Posts: 1,460
Default

Water from cold water faucet goes from cool to hot to cool


You can get foam snap-on pipe insulation or lay batts of regular insulation (kind with no vapor barrier on it) over the pipe or both. I would do the latter.
Good luck!
Mike

Mike Swearingen is offline   Reply With Quote
Old 05-17-2007, 11:19 AM   #3
Member
 
Join Date: Feb 2007
Posts: 118
Default

Water from cold water faucet goes from cool to hot to cool


Quote:
Originally Posted by Mike Swearingen View Post
You can get foam snap-on pipe insulation or lay batts of regular insulation (kind with no vapor barrier on it) over the pipe or both. I would do the latter.
Good luck!
Mike
Just to be clear, by "latter" do you mean "both" or just batts?

Also, I don't know why you would or wouldn't use vapor barrier insulation for this. Could you expand on that?
tima2381 is online now   Reply With Quote
Old 05-17-2007, 03:40 PM   #4
Newbie
 
Join Date: Dec 2006
Posts: 27
Default

Water from cold water faucet goes from cool to hot to cool


Quote:
Originally Posted by Mike Swearingen View Post
You can get foam snap-on pipe insulation or lay batts of regular insulation (kind with no vapor barrier on it) over the pipe or both. I would do the latter.
Good luck!
Mike

Mike , Are you related to one of my customers, Tony Swearingen ,here in Marianna Fl. just wondering I see you in here alot .
tzzzz216 is offline   Reply With Quote
Old 05-21-2007, 08:04 PM   #5
Member
 
Join Date: Apr 2007
Posts: 483
Default

Water from cold water faucet goes from cool to hot to cool


Tima2381, you probably need to install a "heat trap" in the cold water piping that supplies the water heater. Drop the cold water feed down 12", then back up again just before it enters the water heater - put a drain at the bottom of the loop/trap. The other way is to just install a swing check in the line.
Ishmael is offline   Reply With Quote
Old 05-22-2007, 12:02 AM   #6
Member
 
Join Date: Feb 2007
Posts: 118
Default

Water from cold water faucet goes from cool to hot to cool


Quote:
Originally Posted by Ishmael View Post
Tima2381, you probably need to install a "heat trap" in the cold water piping that supplies the water heater. Drop the cold water feed down 12", then back up again just before it enters the water heater - put a drain at the bottom of the loop/trap. The other way is to just install a swing check in the line.
You are talking way over my head. From what I can tell, it definitely seems related to the outdoor temperature. It didn't happen during the winter, and it improves at night. The main water line into the house is 30' of bare PEX running across uninsulated (garage) attic space, which would seem to explain it, given how hot the attic becomes during the day.
tima2381 is online now   Reply With Quote
Old 05-22-2007, 08:02 AM   #7
Member
 
Join Date: Apr 2007
Posts: 483
Default

Water from cold water faucet goes from cool to hot to cool


Quote:
Originally Posted by tima2381 View Post
You are talking way over my head. From what I can tell, it definitely seems related to the outdoor temperature. It didn't happen during the winter, and it improves at night. The main water line into the house is 30' of bare PEX running across uninsulated (garage) attic space, which would seem to explain it, given how hot the attic becomes during the day.
Yeah...if it wasn't a problem in the winter, you're probably correct.

Ishmael is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Low hot water pressure crebive Plumbing 38 02-26-2013 12:26 AM
Faucet options for undercounter water filter mdr25 Plumbing 4 03-02-2007 04:56 PM
Little to no water pressure egglesh Plumbing 7 02-19-2007 06:42 PM
Help with low pressure cold water upstairs lewissv Plumbing 5 01-26-2007 08:05 AM
hot water effecting cold water pressure hp1964 Plumbing 1 06-23-2005 04:51 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.