What Is The Standard Procedure For Installing A Closet Flange On Concrete? - Plumbing - Contractor Talk

What Is The Standard Procedure For Installing A Closet Flange On Concrete?

 
Thread Tools Search this Thread Display Modes
Old 02-06-2008, 01:58 AM   #1
Sharpie
 
trav007's Avatar
 
Trade: Renovation contractor
Join Date: Jan 2008
Location: Mission B.C.
Posts: 227
Rewards Points: 150

What Is The Standard Procedure For Installing A Closet Flange On Concrete?


I've been asked by a friend to install a toilet for them. I've done a lot of toilets but never had to add a closet flange to concrete. I suppose I should just cut the pipe off flush with the concrete and glue in the flange. Is it just that simple?
__________________
Travis
www.customkreations.ca
"The most perfect technique is that which is not noticed at all"
-Pablo Casals
trav007 is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   

Advertisement

 

Old 02-06-2008, 07:27 AM   #2
Professional Instigator
 
rbsremodeling's Avatar
 
Trade: Design Build Remodeling Contractor DC MD
Join Date: Nov 2007
Location: Washington, DC/ Maryland
Posts: 6,872
Rewards Points: 2,000

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


We normally stub the pipe up couple of inches above the concrete. form a box around it pour the concrete and remove the box when the concrete sets up. That way we can adjust the flange as need to get a tight fit. I am sure there are other ways and recommendations

Advertisement

__________________

rbsremodeling is offline  
Old 02-06-2008, 09:24 AM   #3
Curmudgeon
 
neolitic's Avatar
 
Trade: carpentry/remodeling/"Yes M'am we do"
Join Date: Apr 2006
Location: Beech Grove, Indiana, Birthplace of the "King of Cool"
Posts: 11,706
Rewards Points: 2,000

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Plumber sets it to grade and location,
then I duct tape top and underside
of the flange and pour.
I tape the underside to keep a void
for the flange bolt heads.
__________________
Put your location in your profile!
(Sorry....it seems there really are dumb questions)
neolitic is offline  
Sponsored Links
Advertisement
 
Old 02-06-2008, 12:12 PM   #4
Moderator
 
Double-A's Avatar
 
Trade: GC - Remodeling Specialists
Join Date: Jul 2006
Location: Arkansas
Posts: 4,617
Rewards Points: 2,000

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Be sure to screw that flange down to the floor properly as well and make sure the flange sits on the concrete.

There are as many ways to do this as there are plumbers. You've had two responses and two different methods.

One plumber I knew would wrap the closet riser in cardboard and just shove the end into the closet bend, keeping the riser short, so it would be buried in the concrete. Then, once the slab was poured, he would bust the concrete above it, dig it out, cut and glue in a proper length of riser with his flange on top.

The concrete finishers were always leaving him a wavy floor otherwise, and his WC's would rock.
__________________
"My clients’ wishes are the center of my attention." -- David Guido, a contractor in Woodstock, N.Y.
New York Times, July 20, 2006
Double-A is offline  
Old 02-06-2008, 12:39 PM   #5
Pro
 
cleveman's Avatar
 
Trade: custom home building
Join Date: Dec 2007
Location: Central Iowa
Posts: 2,836
Rewards Points: 2,624

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Sharpie,

I don't want anything protruding up from the slab when I pour. Protrusions will only lead to unevenness.

Make boxes and put them about 1/4 or 1/2 below the surface. Seal them off.

Take photos with measurements off the forms.

Pour concrete.

Tap around, break out your box.

Make plumbing connections, fill with sackcrete.
cleveman is offline  
Old 02-06-2008, 05:41 PM   #6
Future Post Deleter...
 
rex's Avatar
 
Trade: Nothing
Join Date: Jul 2007
Location: Nowhere
Posts: 1,895
Rewards Points: 1,092

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


sawzall with old 6" wood blade cut the stub off flush with the floor by sticking the blade in and running the saw zall around the pipe so it cuts flush with the finished floor and a bevel on the inside of the pipe .....glue your flange down and run some tap cons or mushrooms through the screw holes....that is how i have always done pvc closet flanges
rex is offline  
Old 02-06-2008, 05:49 PM   #7
The Grand Wazoo
 
KillerToiletSpider's Avatar
 
Trade: It blowed up real good!
Join Date: May 2007
Location: Illinois
Posts: 3,947
Rewards Points: 1,928

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Drop closet flange over 4" SVCI baldy sticking out of concrete, yarn oakum into the joint, pour the lead, let it cool a minute, pack lead with an iron, and cut off excess CI with an internal soil snapper.
__________________
I may be going to hell in a bucket, but at least I'm enjoying the ride.
KillerToiletSpider is offline  
Old 02-06-2008, 07:45 PM   #8
Pro Plumber
 
Ron The Plumber's Avatar
 
Trade: Plumber
Join Date: Oct 2006
Posts: 2,779
Rewards Points: 2,000

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Plastic TKO Flanges

Use extra brass closet tee bolts, attach the tips of the tee bolts with added nuts between the top of the flange and the bottom side of flange, in all the extra holes, just the tips only so the tee's are on the underside of the flange, set flange to your finished grade, when concrete gets poured, concrete will cure around these tee's and gave the flange a secure set.
Ron The Plumber is offline  
Old 02-06-2008, 07:47 PM   #9
FT.WORTH,TX MASTER PLUMB
 
PARA1's Avatar
 
Trade: plumbing
Join Date: Jul 2007
Posts: 403
Rewards Points: 250

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Quote:
Originally Posted by KillerToiletSpi View Post
Drop closet flange over 4" SVCI baldy sticking out of concrete, yarn oakum into the joint, pour the lead, let it cool a minute, pack lead with an iron, and cut off excess CI with an internal soil snapper.
Would'nt that melt the PVC?
__________________
YESTER DAY IS HISTORY, TOMORROW IS A MYSTERY http://paradiseplumbinganddrains.com...bers-dallas-tx
PARA1 is offline  
Old 02-06-2008, 07:49 PM   #10
FT.WORTH,TX MASTER PLUMB
 
PARA1's Avatar
 
Trade: plumbing
Join Date: Jul 2007
Posts: 403
Rewards Points: 250

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Quote:
Originally Posted by cleveman View Post
Sharpie,

I don't want anything protruding up from the slab when I pour. Protrusions will only lead to unevenness.

Make boxes and put them about 1/4 or 1/2 below the surface. Seal them off.

Take photos with measurements off the forms.

Pour concrete.

Tap around, break out your box.

Make plumbing connections, fill with sackcrete.
How does this pass the rough inspection prior to pour?
__________________
YESTER DAY IS HISTORY, TOMORROW IS A MYSTERY http://paradiseplumbinganddrains.com...bers-dallas-tx
PARA1 is offline  
Old 02-06-2008, 09:01 PM   #11
Pro
 
cleveman's Avatar
 
Trade: custom home building
Join Date: Dec 2007
Location: Central Iowa
Posts: 2,836
Rewards Points: 2,624

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


para,

I don't have any inspections in my area.

I don't even glue the piece coming up from the elbow or tee, but I have a piece of pipe in it just to keep it from filling up with sand.

After I break out and remove the box, then I dig the sand out and glue in the fittings.

If I had to pressure test, I would do it differently. Then I would have to glue and I couldn't cut off the piece below grade, so I'd have to leave it above grade and pour around it and this would create the situation I'm trying to avoid-screeding around a bunch of protrusions.
cleveman is offline  
Old 02-06-2008, 09:17 PM   #12
NJ Plumber with ATTITUDE
 
wrenchman's Avatar
 
Trade: Plumbing Contractor
Join Date: Jan 2008
Posts: 60
Rewards Points: 75

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


I put a small box around my stub up before the pour, then remove the box after the concrete is set. I make up a flange with bolts protruding to the bottom as Ron mentioned, then cut the pipe lower than the floor to make up for the flange recess, glue the flange in place and fill with around it with sakcrete. Your good to go.
wrenchman is offline  
Old 02-06-2008, 10:38 PM   #13
Registered User
 
Jayson12's Avatar
 
Trade: Plumbing, Pipefitting, Hydronics
Join Date: Feb 2008
Posts: 7
Rewards Points: 10

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


If you're working with pvc then stub your w.c. riser above pour and on the rough cut it flush with the floor and glue the correct sized closet collar inside the pipe, for added safety secure it with tapcon screws. If you're working with cast iron I find it is easiest to stub your riser 1/4" below pour (using a lazer transit makes this easy if your away from the wall) and put a foam closet cap over it. Then on the rough lead in a closet collar and secure it with tapcon screws.
Jayson12 is offline  
Old 02-07-2008, 08:42 AM   #14
Member
 
RopeaGoat's Avatar
 
Trade: Plumbing & Heating
Join Date: Sep 2007
Location: Massachusetts/ New England
Posts: 46
Rewards Points: 25

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Prior to backfilling I put a dollar plug in the 3" 90 and take a piece of 4", duck butter the inside of one end and the entire outside of the pipe, then slide it over the hub of the 90. When the floor is done the 4" sleeve slides out nice and easy, remove the dollar plug (VERY IMPORTANT STEP) and cut a 3" piece to fit and then put my flange on w/ Tapcons. The 4" gives me enough diameter to fit my hand down and it's small enough to make a nice edge for the flange to sit.
RopeaGoat is offline  
Old 02-07-2008, 10:29 PM   #15
Pro
 
JamesNLA's Avatar
 
Trade: Plumbing & Electrical
Join Date: Jun 2006
Location: SoCal
Posts: 1,202
Rewards Points: 516

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


What is Duck Butter?
__________________
"....And then we all switch places when I ring the bell"
-Adrock
JamesNLA is offline  
Old 02-07-2008, 10:40 PM   #16
The Grand Wazoo
 
KillerToiletSpider's Avatar
 
Trade: It blowed up real good!
Join Date: May 2007
Location: Illinois
Posts: 3,947
Rewards Points: 1,928

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Quote:
Originally Posted by JamesNLA View Post
What is Duck Butter?
I'm guessing, but I believe it is the same as soil gasket lube.
__________________
I may be going to hell in a bucket, but at least I'm enjoying the ride.
KillerToiletSpider is offline  
Old 02-08-2008, 02:22 PM   #17
Pro
 
masterk's Avatar
 
Trade: Plumbing
Join Date: Dec 2007
Location: Baltimore Maryland
Posts: 183
Rewards Points: 150

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Quote:
Originally Posted by Jayson12 View Post
If you're working with pvc then stub your w.c. riser above pour and on the rough cut it flush with the floor and glue the correct sized closet collar inside the pipe, for added safety secure it with tapcon screws. If you're working with cast iron I find it is easiest to stub your riser 1/4" below pour (using a lazer transit makes this easy if your away from the wall) and put a foam closet cap over it. Then on the rough lead in a closet collar and secure it with tapcon screws.

When you do a PVC flange like this there is no need for boxes, sleves, cardboard, etc. I use 4" pvc pipe, so that the opening on the inside of the flange does not cause a restriction.
masterk is offline  
Old 02-08-2008, 02:40 PM   #18
Curmudgeon
 
neolitic's Avatar
 
Trade: carpentry/remodeling/"Yes M'am we do"
Join Date: Apr 2006
Location: Beech Grove, Indiana, Birthplace of the "King of Cool"
Posts: 11,706
Rewards Points: 2,000

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Quote:
Originally Posted by JamesNLA View Post
What is Duck Butter?
Quote:
Originally Posted by KillerToiletSpi View Post
I'm guessing, but I believe it is the same as soil gasket lube.
If it is,
that's what Grandpa called
"goose grease".
Too bad he died before I got the joke.
__________________
Put your location in your profile!
(Sorry....it seems there really are dumb questions)
neolitic is offline  
Old 02-08-2008, 05:10 PM   #19
Registered User
 
Jayson12's Avatar
 
Trade: Plumbing, Pipefitting, Hydronics
Join Date: Feb 2008
Posts: 7
Rewards Points: 10

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Quote:
Originally Posted by masterk View Post
When you do a PVC flange like this there is no need for boxes, sleves, cardboard, etc. I use 4" pvc pipe, so that the opening on the inside of the flange does not cause a restriction.
I didn't advise him to using anything of the sort using pvc, I advised him to use a foam collar cap when using cast iron so you have the space to fit the collar on and lead it in, using the foam cap is great because there is no patch work because it is sized perfectly. Also I run my underground pvc water closets in 3" and Charlotte does make a 3" inside closet collar, so no need to over size and no need to sleeve the riser for anything.
Jayson12 is offline  
Old 02-08-2008, 07:38 PM   #20
Pro
 
masterk's Avatar
 
Trade: Plumbing
Join Date: Dec 2007
Location: Baltimore Maryland
Posts: 183
Rewards Points: 150

Re: What Is The Standard Procedure For Installing A Closet Flange On Concrete?


Jayson12
Let me clear up my reply. I totaly agree with the way you set a flange, weather it is cast or pvc. I do it the same way. When I said that there is no need to box, sleve, etc. I was trying to let everyone else know that they are doing alot of extra steps to set a flange. The reason I use 4" for the water closet is that the inspectors here don't like the flanges to restrict the opening. I carry 1 type of pvc flange on my truck, fits inside 4" pvc pipe or over 3" pvc pipe.

Advertisement

masterk is offline  


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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
New OSHA standard OsNap Health & Safety 8 01-08-2010 09:19 PM
Staining concrete ryan.s Masonry 12 03-05-2009 03:54 PM
structural concrete... mdshunk Masonry 3 03-05-2009 03:42 PM
Closet Flange Knockout Cap poops Plumbing 2 05-19-2006 08:19 PM
closet flange Vermonster Plumbing 3 02-15-2006 08:43 AM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?