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 12-28-2009, 05:23 AM   #1
Member
 
Join Date: Aug 2009
Location: Tennessee
Posts: 79
Rewards Points: 0
Share |
Default

Right size supply lines to bathrooms


Looking for opinions on running supply lines to bathrooms and kitchen or some kind of calculator. We dont have anything extra out of the ordinary. Bathrooms are a shower, toilet, and sink. The kitchen will have sink and possible future dishwasher. So then would the 1/2" pex supply lines be alright or would we need to consider larger ?

Mudball is offline   Reply With Quote
Old 12-28-2009, 05:52 AM   #2
Newbie
 
Join Date: Dec 2009
Posts: 29
Rewards Points: 0
Default

Right size supply lines to bathrooms


1/2" is fine. this is typical in all houses

JGibbsRemodel is offline   Reply With Quote
Old 12-28-2009, 06:18 AM   #3
Member
 
Join Date: Dec 2008
Location: Wilmington, DE
Posts: 3,118
Rewards Points: 0
Default

Right size supply lines to bathrooms


Typically, water enters the house in 1 or 3/4" pipe. It should stay at 3/4 as close as possible to its' final fixture, then go to 1/2". If it is 1/2" from the house entry, you can have low pressure problems when someone else opens a faucet or flushes a toilet.
Just Bill is offline   Reply With Quote
Old 12-28-2009, 07:28 AM   #4
Member
 
Join Date: Nov 2009
Location: central virginia mountains
Posts: 1,857
Rewards Points: 0
Default

Right size supply lines to bathrooms


I always run 3/4 then drop to 1/2 at fixture not that much more cost wise and keeps volume up. I think here you are allowed to drop to 1/2 when down to two fixtures on run
tpolk is offline   Reply With Quote
Old 12-28-2009, 07:36 PM   #5
Member
 
Join Date: Aug 2009
Location: Philadelphia, PA
Posts: 144
Rewards Points: 0
Default

Right size supply lines to bathrooms


Are you doing all homeruns with the pex? If so then you will be making all the connections in the basement using a manifold. If that is the case then 1\2" is fine. If no manifold then follow what the other posters are saying and run a larger line close to the fixture before you switch to 1/2".
paul100 is offline   Reply With Quote
Old 12-28-2009, 09:45 PM   #6
Member
 
Join Date: Aug 2009
Location: Tennessee
Posts: 79
Rewards Points: 0
Default

Right size supply lines to bathrooms


Thank you all very much. I believe its 1" coming into the house. We are building what you might call a basement house. Concrete block walls and slab floor. We live out in the sticks and are not subject to code inspections or permits so I have to make sure they do it right. One plumber I was talking to said that if he gets the job he was going to run 1/2" from the utility room to supply the bathrooms which each bathroom has a shower, toilet and sink. Anyway I think I understand that from the 1" supply line in the utility room that the plumber will need to run 3/4" to each bathroom wall and run separate individual 1/2" off that 3/4" for each fixture. Did I say that right ?
Mudball is offline   Reply With Quote
Old 12-28-2009, 10:12 PM   #7
Member
 
Join Date: Dec 2008
Location: Dayton Ohio Area
Posts: 670
Rewards Points: 0
Default

Right size supply lines to bathrooms


More or less, you did.

I tend to run 3/4" as close to the room/fixtures and split from there.
__________________
-Andrew
DIY hobbiest
AndrewF is offline   Reply With Quote
Old 12-29-2009, 08:26 PM   #8
Member
 
Join Date: Aug 2009
Location: Tennessee
Posts: 79
Rewards Points: 0
Default

Right size supply lines to bathrooms


Thanks AndrewF that sounds great. I will make sure that 3/4" is the minimum run to each bathroom and then go from there.

Mudball 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
Extending Water Supply Box In Laundry Room hsl Building & Construction 0 11-18-2009 09:21 AM
help w/ duct sizes & new supply locations palex1915 HVAC 0 10-13-2009 07:52 PM
water lines on slab toolbelt Tina Plumbing 6 05-21-2009 07:05 PM
Will water lines freeze if placed behind insulated stud wall in basement? jpsmith Remodeling 22 03-05-2009 12:23 PM
increasing washer supply lines to 3/4" instead of 1/2" amatchin Plumbing 3 04-15-2006 04:23 PM




Top of Page | View New Posts

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