How to Install Toilet Flange Spacer?

Old 10-31-06, 07:48 AM
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Smile How to Install Toilet Flange Spacer?

I need to add two or three spacers to my ABS Oatey toilet flange to bring it to its proper height with the new finished floor. I have Oatey 1/4" spacers with pre drilled countersunk holes in them. But those holes do not line up with the mounting holes for my flange which is already attached to my sub floor. Questions:

1. Do I need to drill new holes in the spacers to align with the ones in the flange and attach the spacers with longer screws? Or do I just drill through the plastic flange using the existing holes in the spacer? Do I even need screws?

2. Are the spacers installed with the use of silicone or something to create a seal between them and between the toilet flange?

Thanks, Mike
Old 10-31-06, 12:20 PM
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I encountered the same problem. Furthermore I was unable to find an orientation of the Oatey spacer that allowed sufficient material to drill new holes - they either overlapped existing holes or forced placement of the slots in the wrong position.

I therefore used a cut-off wheel to cut the ID of the 3" PVC waste pipe about 6 inches below the closet flange. I used a 3"to3" coupling and installed a new section of 3" pipe with brand new closet flange at correct height. I had to cut a wood spacer to go between the new closet flange and the old subfloor. Used this method twice now with good results. Just be sure not to *-up the gluing of the new pipe / flange - you only get one shot at it.

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