Flange 4" Higher Than Subfloor - Plumbing - DIY Home Improvement | DIYChatroom


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

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

Reply
 
Thread Tools Display Modes
Old 05-19-2008, 09:58 PM   #1
Newbie
 
Join Date: Jan 2008
Posts: 7
Rewards Points: 10
Default

Flange 4" higher than subfloor


I am finishing off my basement and wanted to add in a 1/2 bath but I decided against buying a Saniflo toilet or an ejector pump b/c of the cost and just decided to tie into the main drain since it leaves the basement at the floor level. I hammered into the foundation and put the line in and now (as I knew would be the case) the flange is about 4.5" above the subfloor. I am putting tile into the bathroom so I am assuming that between the backer board and tile I will make up some of that distance but clearly not all of it.

So my question is how do I go about making up the rest of it. Do I need to build up a small platform for the toilet to sit on or is there any toilets that have a recessed connection for the flange for this type of situation. Or are there any other options that I am not aware of?

As always any input is appreciated.

Kelrock
Attached Thumbnails
Flange 4" higher than subfloor-high-flange.jpg   Flange 4" higher than subfloor-flange.jpg  

Advertisement

kelrock is offline   Reply With Quote
Old 05-19-2008, 10:46 PM   #2
Doing it myself
 
Alan's Avatar
 
Join Date: Apr 2006
Location: Crescent City, CA
Posts: 3,762
Rewards Points: 2,024
Send a message via AIM to Alan Send a message via MSN to Alan
Default

Flange 4" higher than subfloor


I would say you need to build another floor system on top of what you already have. I'm no carpenter, but 2x4 dimensional lumber will make up 3.5", 3/4" T/G floor sheeting will bring you to 4.25, which will get you pretty darn close once you put backerboard and tile on it. This all assuming that this is an appropriate way to do things.

If your flange ends up a little low, thats even OK. We sometimes double up wax rings or if you don't like that idea, they make risers that you can glue and screw onto the flange to raise it to the appropriate height.


Hope that helps.


Edit : Is that waferboard just sitting on the concrete? I somehow think that you're supposed to have pressure treated between concrete and raw wood, but maybe someone else will chime in on that.

Advertisement

__________________
Journeyman Plumber
Alan is offline   Reply With Quote
Old 05-20-2008, 12:40 AM   #3
Registered User
 
Termite's Avatar
 
Join Date: Apr 2008
Posts: 6,520
Rewards Points: 2,000
Default

Flange 4" higher than subfloor


Alan has a pretty good idea going. Since the option of correctly plumbing it isn't happening, I'd say you'll have to raise the floor level. If it were me, I'd raise the entire bath's floor level, not just the water closet's. Use treated 2x4's to frame the structure.

As for the OSB, hopefully it isn't just plain OSB sitting on concrete because that won't last long. They do make 2x2' T&G OSB subfloor squares that have plastic on their underside, which are intended to fur up concrete floors to apply wood floors, etc. Hopefully that's what we're seeing there.
Termite is offline   Reply With Quote
Old 05-20-2008, 09:39 AM   #4
Newbie
 
Join Date: Jan 2008
Posts: 7
Rewards Points: 10
Default

Flange 4" higher than subfloor


Yes that is what your seeing there on the concrete. Its Dricore brand subfloor.

"Since the option of correctly plumbing it isn't happening" - just curious how would you have done this?
kelrock is offline   Reply With Quote
Old 05-20-2008, 12:02 PM   #5
Member
 
47_47's Avatar
 
Join Date: Sep 2007
Location: Springville, NY
Posts: 1,517
Rewards Points: 622
Default

Flange 4" higher than subfloor


Where your vent / sink drain ties into the toilet drain is this a sanitary tee?
__________________
What we've got here is... failure to communicate. Some men you just can't reach. So you get what we had here last week, which is the way he wants it... well, he gets it.
47_47 is offline   Reply With Quote
Old 05-20-2008, 04:15 PM   #6
Newbie
 
Join Date: Jan 2008
Posts: 7
Rewards Points: 10
Default

Flange 4" higher than subfloor


Yes its a sanitary tee.
kelrock is offline   Reply With Quote
Old 05-20-2008, 04:36 PM   #7
Registered User
 
Termite's Avatar
 
Join Date: Apr 2008
Posts: 6,520
Rewards Points: 2,000
Default

Flange 4" higher than subfloor


Quote:
Originally Posted by kelrock View Post
"Since the option of correctly plumbing it isn't happening" - just curious how would you have done this?
No offense intended. This is an installation that would typically utilize an ejector pump in order to get the pipes set at the appropriate levels, whereas you can't really do it by gravity. Was backflow protection taken into consideration if you're below the sewer's upstream manhole? That sanitary tee appears to be on its back as well.

Last edited by Termite; 05-20-2008 at 05:07 PM.
Termite is offline   Reply With Quote
Old 05-20-2008, 06:26 PM   #8
Journeyman Plumber
 
Ron The Plumber's Avatar
 
Join Date: Jun 2006
Location: Eugene, Oregon
Posts: 1,994
Rewards Points: 1,000
Default

Flange 4" higher than subfloor


Quote:
Originally Posted by kelrock View Post
Yes its a sanitary tee.

Vertical drain into a horizontal drain must enter into a wye fitting, that san-tee is not allowed, and the distance from you sink drain to the vent is too far, max distance on trap arm to vent for 1-1/2" is 3' 6" or 5' for a 2" trap arm, it looks like your too far. away from the vent.

You need to rethink what your doing.
__________________
Fix it right the first time, so you won't have to fix it a 2nd time.

2008 Oregon Specialty Plumbing Codes
Ron The Plumber is offline   Reply With Quote
Old 05-20-2008, 06:31 PM   #9
Journeyman Plumber
 
Ron The Plumber's Avatar
 
Join Date: Jun 2006
Location: Eugene, Oregon
Posts: 1,994
Rewards Points: 1,000
Default

Flange 4" higher than subfloor


Need new pictures of the sink stub ouit area, it appears the have a vent near it, but can't make it out, what is it that black looking on the sink stub out.
__________________
Fix it right the first time, so you won't have to fix it a 2nd time.

2008 Oregon Specialty Plumbing Codes
Ron The Plumber is offline   Reply With Quote
Old 05-20-2008, 09:39 PM   #10
Doing it myself
 
Alan's Avatar
 
Join Date: Apr 2006
Location: Crescent City, CA
Posts: 3,762
Rewards Points: 2,024
Send a message via AIM to Alan Send a message via MSN to Alan
Default

Flange 4" higher than subfloor


Quote:
Originally Posted by Ron The Plumber View Post
Vertical drain into a horizontal drain must enter into a wye fitting, that san-tee is not allowed, and the distance from you sink drain to the vent is too far, max distance on trap arm to vent for 1-1/2" is 3' 6" or 5' for a 2" trap arm, it looks like your too far. away from the vent.

You need to rethink what your doing.
Not only that, but the trap arm for his Lav is going 270* when only 90* is allowed without a cleanout. I wasn't going to pick apart his code violations, but assuming he wants to actually do it right........
__________________
Journeyman Plumber

Last edited by Alan; 05-20-2008 at 10:11 PM.
Alan is offline   Reply With Quote
Old 05-21-2008, 10:04 AM   #11
Newbie
 
Join Date: Jan 2008
Posts: 7
Rewards Points: 10
Default

Flange 4" higher than subfloor


You cant see it but there is a vent and a clean out on the sink drain so from what I can gather my code violation right now is not having a wye fitting for where the vertical drain coinnects to the horizontal. Also a check valve might be required.

Thanks for the input guys....any thoughts though on what my original question was regarding whether or not there are any other options other than building the floor up to accomodate the raised flange?
kelrock is offline   Reply With Quote
Old 05-21-2008, 10:20 AM   #12
Underground Techie
 
sevver's Avatar
 
Join Date: Apr 2008
Location: Chicago land
Posts: 96
Rewards Points: 75
Default

Flange 4" higher than subfloor


Dude, you already have the floor busted out. Dig a hole and put a pit in and be done with it already. This also keeps the chance of a main sewer backup from reaching your basement. Whatever you save by not putting in a pit you will spend on lumber and trying to make something work that isn't going to be a good job. Cutting corners seldom is worth the effort.
sevver is offline   Reply With Quote
Old 05-21-2008, 09:57 PM   #13
Doing it myself
 
Alan's Avatar
 
Join Date: Apr 2006
Location: Crescent City, CA
Posts: 3,762
Rewards Points: 2,024
Send a message via AIM to Alan Send a message via MSN to Alan
Default

Flange 4" higher than subfloor


Quote:
Originally Posted by kelrock View Post
You cant see it but there is a vent and a clean out on the sink drain
In that case, wet venting is limited to vertical drainage. Your Lav drain is horizontal.
__________________
Journeyman Plumber
Alan is offline   Reply With Quote
Old 05-21-2008, 11:37 PM   #14
Registered User
 
Termite's Avatar
 
Join Date: Apr 2008
Posts: 6,520
Rewards Points: 2,000
Default

Flange 4" higher than subfloor


Sevver's right. You're going to regret not putting an ejector in, especially when you someday try to sell the place with the toilet plumbed like that. There isn't really another option besides framing that floor up.

Advertisement

Termite is offline   Reply With Quote
Reply


Thread Tools
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
Need guidance on subfloor problems in new home. wb1026 Flooring 9 10-06-2009 07:29 AM
Need opinion - Need help - I believe my toilet was not installed properly rdlegacy Plumbing 9 05-06-2008 06:03 PM
Subfloor / underlayment question... scheenstra Flooring 7 02-21-2008 08:39 AM
Subfloor & toilet flange MichaelWayne_71 Flooring 5 11-06-2007 07:28 AM
Flange Help Needed tajones44 Plumbing 2 07-11-2005 05:42 PM




Top of Page | View New Posts