Question about recessing tile for ember protection

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New Member
Feb 27, 2021
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!


Staff member
Nov 18, 2005
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.