I have my Durock laid and everything is great except for one spot. There's a small lip in a 2 inch portion of the seam. The lip is approx. 1/16 of an inch high. Can I sand the spot level? what's the quickest, easiest fix? (if there is one).

The Durock was thinset and nailed down (using 1 1/4 inch roofing nails)

Thanks.

This message has been edited. Last edited by: Noj,

You really don't have any choice but to sand or grind down the surface. It will not hurt the Durock to be ground down but it will be dusty to do. A belt sander with an agressive grit will do it, as will a grinder.

While it is best to get rid of that extra 1/16", also consider what you are putting on top. If it's large tile bedded in thick thinset, your leveling job may not need to be 100% perfect. Every subfloor has some highs and lows that are worked out at the final tile installation.

12x12 tile with a 1/4x1/4x1/4 trowel. Any problems with a small lip?

quote:

Originally posted by Noj:
12x12 tile with a 1/4x1/4x1/4 trowel. Any problems with a small lip?

Probably not, especially since you are aware that it is there. Simply a matter of adjusting how much thinset is in that area as you lay your tile.

quote:

level? what's the quickest, easiest fix? (if there is one).

The Durock was thinset and nailed down (using 1 1/4 inch roofing nails)

They're both saying to bury the glitch in the bed of thin set you set the tile in, and I'd agree with that. My bag of Mapei Kerabond says to use a 1/4 inch square notched trowel (1/4 X 1/4 X 1/4)for tile sizes up to 6 inches square. For tiles larger than 6 inches square, to use a 1/4 X 3/8 X 1/4 inch square notched trowel. That is, a square notched trowel with 1/4 inch wide teeth spaced 1/4 inch apart and a 3/8 inch notch depth between the teeth.

Even with a 1/4 inch square notched trowel you could still bury that glitch in the 1/4 inch thickness of thin set available to you. But, if you opt for a larger tile, you've got 3/8 inches of thin set to bury it in, and that's enough to have a dead animal under your tiling without having a noticable "bump".

This message has been edited. Last edited by: Nestor,

we had an unnoticed rise in the backer board on our main bathroom floor, with the result that there is a tile raised a titch and the toilet can't sit square. requires frequent maintenance (as in every couple years, as in yank it, replace the rings, use something else as a shim.)

get that bump out of there, I'm begging you.

you will regret not doing it, I guarantee.

I would be most concerned with the nailing method you speak of. Screws & liquid nail are the method of attachment in these parts. Might be regional thing, but what about squeeks ?

quote:

Originally posted by CommonwealthSparky:
I would be most concerned with the nailing method you speak of. Screws & liquid nail are the method of attachment in these parts. Might be regional thing, but what about squeeks ?

He did it right - thinset and nails or thinset and screws re recommended.