We have refloored a small bathroom and took out the toilet to get a better
finish. However, when we removed the toilet the flange that holds the
johnny bolts broke. We have been trying to put down a new flange onto a
concrete floor... nightmare... the concrete cracks when we try to drill
and there a various gaps around the area needed to secure the flange. How
on earth do we get this thing secure so we can put the toilet back? thanks
Is flange plastic or metal?
In any case you can break out all the concrete around the flange and
replace it.big job lots of hassles
Its easier to breeak out areas where flange bolts go and cement in new
use small masonary bit then go larger cement new bolts in place let
cement dry at least a day
I had eggsackly the same problem a few years ago, and it was a stamped
steel flange which had pretty well rusted out. Set in cocrete as yours is.
I broke and pulled off the rest of that flange.
Then I took a short piece of strapping and drilled two 3/8" holes
through it matching the spacing of the two bolt holes in the toilet
bowl, to make a template.
I used a masonry bit to drill a pair of 3/8" holes about 2" deep in the
right spots on either side of the drain opening, per the template.
I bought a couple of 4" long 5/16" galvanized bolts, turned their heads
down to 3/8" diameter so they'd slide down the holes, and cemented them
in with Rockite. (Rockite is the trade name of one brand of quick
setting expansion cement often used for setting machinery mounting bolts
into concrete floors.) I used the same cement to level out the floor
where the original stamped steel flange had been sunk into the cement floor.
The toilet bowl fit over the bolts perfectly. The bolts stuck up a bit
to high for their decorative caps, but a few seconds with an angle
grinder fixed that. I had to use a couple of plastic shims to keep the
toilet from rocking fore and aft, 'cause whoever originally put the
concrete floor and tiles down left a slight hill around the drain
opening. I shoved some tile grout between the bowl bottom and the tile
floor to pretty things up.
So, however cruddy the concrete surrounding the drain is, if you can
create clearance to set in two bolts like I did, even if the holes you
drill aren't perfect, Rockite will make 'em act like they are.
Worked for me, YMMV
You need to supply more info.
Pipe material below the flange? Could be lead, plastic, copper, cast
Scroll down to Expansion Flanges.
DEPENDING on the type of soil pipe embedded,
the exp flange may offer almost enough security.
If you can, consider drilling holes in the
concrete at a steep angle to avoid breaking the
concrete. Use stainless screws and expansion plugs.
On 8/6/2006 11:18 AM or thereabouts, soulgazer02 appears, somewhat
unbelievably, to have opined:
How about a PVC flange that fits just inside the old one? That's what I
used a few years ago. Works fine, and is available at most any plumbing
supply. Easy, too. No breaking concrete, just apply glue and shove it in.
As a child, my parents thought I was an idiot-savant.
Now, however, it is rather clear that I\'m simply an idiot.
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