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tony f.
02-24-2010, 10:55 AM
redoing bathroom, flange sits about 1 & 1/8 " above subfloor. Plumber says to just build up subfloor by doubling 1/2" plywood. Does this sound right. Will be finishing floor with ceramic tile. Should the flange be above tiled floor or level with it.

Gary Swart
02-24-2010, 11:10 AM
Flanges should set on top of the finished floor and be screwed through into the sub flooring. With ceramic tile, it's easiest to notch the tile when the screws have to go through rather than drilling. Drilling is possible, but requires special bits. Use #12 stainless steel screws of sufficient length to get well into or through the sub floor.

jadnashua
02-24-2010, 01:19 PM
Your other option is to reset the flange to the proper height. Check out www.johnbridge.com (http://www.johnbridge.com) for help on tiling and prepping the floor for tile.

Gary Swart
02-24-2010, 01:59 PM
Jim is correct about resetting the flange. This is actually replacing. In assumed that would be done in my original response, but didn't make it very clear. I would not try to build up the floor just to avoid replacing the flange to the proper height.