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 09-05-2010, 11:35 AM   #1
Newbie
 
Join Date: Sep 2010
Posts: 2
Rewards Points: 10
Default

toilet flange knockout


Can anyone tell me the proper way to knock out the "knockout" center of a new PVC toilet flange?
First: Do I install the flange before knocking it out or after?
I've already (without it installed) given it a couple of sharp raps with a hammer and nothing happens. Its on there solid. ?
Second: Is the upper lip of the flange supposed to sit on the tiles? Or the backerboard under the tiles? (I set the tiles close up to the drain, so I may have to cut away some tile if the flange is supposed to be level
with the tile.)
Steve77

steve77 is offline   Reply With Quote
Old 09-05-2010, 12:07 PM   #2
moderator
 
TheEplumber's Avatar
 
Join Date: Jul 2010
Location: North Idaho
Posts: 7,035
Rewards Points: 2,256
Default

toilet flange knockout


If your not pressure testing the DWV system then you can remove the knock out before setting or get a flange without the knock out. I use a screwdriver or wood chisel on the stubburn ones. Puncture a hole in the knock out and use pliers to peel it away.
The flange should sit on top the tile. Be sure to anchor it to the floor.

TheEplumber is online now   Reply With Quote
Old 09-05-2010, 06:29 PM   #3
Newbie
 
Join Date: Aug 2010
Posts: 1
Rewards Points: 10
Default

toilet flange knockout


Thanks. Done. And its perfect.
steve
steve7 is offline   Reply With Quote
Old 09-05-2010, 06:33 PM   #4
the Musigician
 
DangerMouse's Avatar
 
Join Date: Jul 2008
Location: I'm right here!
Posts: 10,404
Rewards Points: 2,000
Default

toilet flange knockout


Yup, those things can be a real PITA to knock out, huh? I just did 2 of them too.

DM
__________________
[SIGPIC][/SIGPIC]Click here to see some of my original magic tricks and trick boxes!
DangerMouse is offline   Reply With Quote
Old 09-05-2010, 08:03 PM   #5
Member
 
Join Date: Aug 2010
Posts: 601
Rewards Points: 500
Default

toilet flange knockout


I just worked on a hotel that the trim crew got fired from. I spent 2 days getting 13 knockouts from CI drain lines in walls. It was fun and pretty lucrative
the_man is offline   Reply With Quote
Old 09-06-2010, 08:49 AM   #6
Newbie
 
Join Date: Sep 2010
Posts: 2
Rewards Points: 10
Default

toilet flange knockout


Can you give me a clue on this: I installed a new fill valve (brand name Korky) and its shutting off when the water fills, but a few seconds later its starts a little hisss which I assume is letting in a little more water. I checked the (new) flapper and it appears properly seated. I flushed it about fifteen times over a period of a couple of hours and it still shuts off initially then starts the hissing.
Its a little toilet with the tank built right onto it, the tank is small, so I did not extend the fill valve at all, leaving it at its shortest height, and did not put in the no-tamper clip.
steve
steve77 is offline   Reply With Quote
Old 09-06-2010, 08:57 AM   #7
the Musigician
 
DangerMouse's Avatar
 
Join Date: Jul 2008
Location: I'm right here!
Posts: 10,404
Rewards Points: 2,000
Default

toilet flange knockout


Quote:
Originally Posted by the_man View Post
I just worked on a hotel that the trim crew got fired from. I spent 2 days getting 13 knockouts from CI drain lines in walls. It was fun and pretty lucrative
So... they busted them up and let them fall down the drains????

DM
__________________
[SIGPIC][/SIGPIC]Click here to see some of my original magic tricks and trick boxes!
DangerMouse is offline   Reply With Quote
Old 09-07-2013, 05:54 PM   #8
A bit of everything
 
Join Date: Apr 2013
Location: Denver area, Colorado
Posts: 2
Rewards Points: 10
Default

toilet flange knockout


OK, so after having trouble with the same thing and reading this thread I attacked it with several hard blows using a large screwdriver and hammer. It eventually started to crack and after it cracked enough I was able the twist and jerk on it with the pliers until the stupid thing came out. Gets an award for user unfriendly design in my opinion, but then too, maybe they're all that way. I hope not to have to find out anytime soon.


Last edited by rpmnow; 09-07-2013 at 05:57 PM.
rpmnow 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
Uneven toilet flange alqugrub Plumbing 6 08-27-2012 08:16 PM
Toilet Flange Inside or Outside Drain Pipe? sledged Plumbing 23 01-18-2012 12:18 PM
Replacing basement toilet - what to do about flange mslide Plumbing 4 12-20-2009 07:54 AM
toilet flange connection to lead soil pipe rd115 Plumbing 1 11-22-2009 05:37 PM
closet flange trouble for antique toilet diyb Plumbing 4 05-20-2009 08:07 PM




Top of Page | View New Posts

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