Bolt toilet flange to floor, or not?

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Old 04-09-06, 08:54 AM
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Bolt toilet flange to floor, or not?

Hello,

I'm installing a toilet to a basement rough-in. The basement is a cement (maybe concrete) slab. Does the toilet flange have to be bolted to the floor, or just PVC-cemented to the waste line? The waste pipe is 4-inch PVC.

I've heard and read both answers. Who's right? What's best? If the floor is level around the pipe, will PVC-cementing the flange to it be sufficient?

Thanks for your time & advice.
 
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Old 04-09-06, 10:13 AM
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mert, Welcome to the DIY Forums.
PVC cement is made for PVC, not concrete. There are 4 holes in the flange. After it is glued to the pipe, use concrete screws (Tapcons) to hold it to the floor. This supports the whole flange so that if the toilet rocks a little, it will not break off the piping. I am not saying it SHOULD rock, but if something happens that it does, you won't be breaking concrete to install new piping. In case the floor isn't as level as it looks, they sell plastic toilet shims to correct it. Good luck.
 
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Old 04-09-06, 10:47 AM
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majakdragon wrote: "PVC cement is made for PVC, not concrete."

Agreed. I wasn't suggesting using it between the flange and the concrete. I was just wondering if the PVC cement between the flange and the waste pipe would provide enough strength.

I will definitely take your advice and use the concrete screws.

Thanks again!
 
 

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