Question about recessing tile for ember protection

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chillyinthewoods

New Member
Feb 27, 2021
2
NY
Hi-- I will be installing a wood stove (morsoe 2b classic) and for ember protection I have an oversize (30x60") 3/8" thick porcelain tile and 11 cm hardie backer board. To minimize the risk of stubbing toes on it, I want to recess it by removing the floorboards and laying it on the subfloor. My question is, do I need to actually set the tile or cementboard or can I just lay them on top of the subfloor since they are each one piece? I'm not concerned about them moving, for obvious reasons, I just want to minimize the risk of cracking. Thank you!
 

begreen

Mooderator
Staff member
Nov 18, 2005
91,333
South Puget Sound, WA
I hope that is 11mm hardibacker. The cement board should be screwed to the subfloor per mfg recommendation. Then use thinset to set the tile. The thinset will fill in irregularities and offer more even support once it sets up. You can then trim out the edges with quarter-round for a pretty stub-proof installation.