O.K. Let's start with 2 facts. #1. I over-think everything. #2. I have received excellent advice here, both thru reading other threads and in response to my post questions.
So here's my question. I have a Hearthstone Heritage, not yet installed or used, but built before Hearthstone started putting the longer legs on it. I have an almost complete Hearth. Construction of the hearth is:
1. ~ 5' by 5' hearth
1. 2x 4 framing, 2 x 4s ripped to 2 3/4" height.
2. 3/4" underlayment on top of 2x 4 framing--super flat, with out dips or high spots.
3. one layer of 1/2" New Generation Durock, screwed to 3/4" underlayment, Durock screws, no thinset.
4. layer of thin set.
5. 2nd layer of Durock, screwed thru first layer of Durock and into underlayment.
6. Next will be added another layer of thinset and 3rd layer of Durock, screwed thru first 2 layers with 2 1/4" Cement Board screws, again into the underlayment.
7. Final layer will be Bluestone, in a mortar bed.
Being concerned about the possible heat transfer from the stove thru the Durock screws to the underlayment, I made a pattern of the footprint of the stove on each layer of Durock. As I have applied the Durock, I did not put any screws in the footprint of the stove. I started the screw pattern along the periphery of the footprint of the stove, working out from the stove footprint, to keep the Durock flat. Put the screws 6" on center at edges and along the periphery of the footprint, and 8" spacing in the field of the Durock. I staggered the spacing of the screws on each layer thus far. As I go to put on the last layer, I realize I will have a lot of metal screws along the periphery of the footprint of the stove, within 1 and a half inches of the periphery of the footprint of the stove, and again am worried about heat transfer.
Yes, I should have thinset both of the last 2 layers simultaneously and that would have cut down on the number of screws, but foolishly didn't do that.
So, concerned re: heat transfer, should I:
1. Quit worrying
2. Tear it all up and screw it different or start over.
3. See if I can get the longer legs for the Heritage and raise the height of the stove.
4. Or do some other thing I am not thinking about.
Thanks in advance for responses.
So here's my question. I have a Hearthstone Heritage, not yet installed or used, but built before Hearthstone started putting the longer legs on it. I have an almost complete Hearth. Construction of the hearth is:
1. ~ 5' by 5' hearth
1. 2x 4 framing, 2 x 4s ripped to 2 3/4" height.
2. 3/4" underlayment on top of 2x 4 framing--super flat, with out dips or high spots.
3. one layer of 1/2" New Generation Durock, screwed to 3/4" underlayment, Durock screws, no thinset.
4. layer of thin set.
5. 2nd layer of Durock, screwed thru first layer of Durock and into underlayment.
6. Next will be added another layer of thinset and 3rd layer of Durock, screwed thru first 2 layers with 2 1/4" Cement Board screws, again into the underlayment.
7. Final layer will be Bluestone, in a mortar bed.
Being concerned about the possible heat transfer from the stove thru the Durock screws to the underlayment, I made a pattern of the footprint of the stove on each layer of Durock. As I have applied the Durock, I did not put any screws in the footprint of the stove. I started the screw pattern along the periphery of the footprint of the stove, working out from the stove footprint, to keep the Durock flat. Put the screws 6" on center at edges and along the periphery of the footprint, and 8" spacing in the field of the Durock. I staggered the spacing of the screws on each layer thus far. As I go to put on the last layer, I realize I will have a lot of metal screws along the periphery of the footprint of the stove, within 1 and a half inches of the periphery of the footprint of the stove, and again am worried about heat transfer.
Yes, I should have thinset both of the last 2 layers simultaneously and that would have cut down on the number of screws, but foolishly didn't do that.
So, concerned re: heat transfer, should I:
1. Quit worrying
2. Tear it all up and screw it different or start over.
3. See if I can get the longer legs for the Heritage and raise the height of the stove.
4. Or do some other thing I am not thinking about.
Thanks in advance for responses.
