Rocking and rolling on your toilet can be a little unnerving. The hidden damage from water leaking under a loose toilet can cost thousands of dollars to fix. The sooner you can make the repair the better. Repairing a broken toilet drainpipe, even in concrete, is not that difficult for the novice do-it-yourselfer. The whole job will take about three hours, depending on how fast your concrete mixture dries.
- Skill level:
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Things you need
- Insert closet repair flange
- Small bag of concrete mix
- Power drill
- Concrete drill bit
- Concrete anchors
- Concrete anchor screws
Insert a large towel into the toilet drainpipe. This is to keep debris from falling into the sewer line. If you think the rag will fall down the pipe, tie a string around it first.
Break off the rest of the old closet flange with a hammer and chisel. Be careful of flying pieces of metal or plastic.
Pour concrete around the toilet drainpipe up to floor level if necessary. Smooth the concrete even with the bathroom floor. This will give the new flange a solid foundation to anchor.
Remove the towel from the drain. Push the new repair closet flange into the drainpipe. Some closet repair flanges need tightening from the inside before you anchor them.
Drill at least four anchor holes into the new concert through the anchor holes in the flange. Use a concrete drill bit to drill the holes, and then insert the anchors and screws.
Tips and warnings
- Always anchor the toilet flange.
- Wear safety glasses and rubber gloves when working on toilet flanges.
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