filling hole below tiles

[Jules Richardson]

More tiling fun...

I've got a triangular-shaped channel that I need to fill before tiling over - it's a strip of about 26" long and 2" wide, 1/4" deep along one edge and 0" deep (relative to surrounding backer-board) along the other. The bottom of the channel's hardwood with solid support beneath (i.e. no flexing issues)

Can I use regular thinset to fill that, or do I need something more solid? My concern's that at the deepest point I'll have 1/4" of mortar plus however thick the layer is I put down to stick the tiles to - and maybe that's just asking for trouble, and I need to first fill the channel with something else up to the level of the surrounding backer board?

cheers

Jules

[Joe]

You could probably fill it with any setting type compound, but given similar situations I have used floor leveling compounds successfully.

Joe

[RicodJour]

If you're concerned you could use two strips of fiberglass mesh tape over the joint for peace of mind, but it's not that big of a declivity to be concerned about.

R

[dadiOH]

Thinset is good stuff. Just fill your space with it either before or while you lay the tile.