Lee Moreau
New Member
Searched a lot on this but figure I'll post just to be on the safe side. I just redid the floor in the bathroom at a condo I own. The sub floor is solid concrete, and there was porcelain or ceramic tile on top of it. I removed all the tile, and the round flange is sitting on top of the concrete sub floor, so it's not flush with it. The tiles I removed were standard size, not sure how tall, but the new ones that I put down and all around the flange are 10mm thick. They are thicker than the old ones by maybe 1/8 inch. I'm not there right now so can't measure, but one thing I noticed is that the flange is definitely lower than the tiles around it. Not by much, maybe 1/4 inch or less but not any more than that. The reason I ask is because most of the flange extension kits start at 1/4 inch and then go 1/2 and larger. So just wondering, if the distance is less than 1/4 inch and is say 1/8, is it better to leave it as is and be a touch short? Or is it better to use a 1/4 inch flange extension kit even if that means it may potentially make the flange 1/8 inch higher than the tiles?