Now that we have the clearances for the Progress, it's time to build the hearth, quickly. This is my first hearth build, so winging it and would appreciate the wise and experienced minds of hearth.com double checking me. With the ashlip, the r-value for the hearth is .4. The current hearth, which is flush (sort of) with the floor, is bluestone on top of concrete. But the hearth must be extended a fair bit over the wood floor (200 yr old pine). My plan is to use 1/2" Durock Next Gen and 1/4" porcelain tile laid over the existing hearth and the floor. I'm thinking this will give me .41 R-value (.39 + .02) and will be sufficient. Am I missing anything? Is anything else needed?
I'm trying to get the hearth as thin as possible because I don't think I have much room for the rear vent pipe to clear the lintel of my fireplace. The rear vent is 27.75" on center, which I think with 6" pipe would mean the top of the pipe would be at 30.75". I also need the pipe shield, which adds an inch to this, so now I'm at 31.75". I'm hoping my hearth will only raise the stove an inch, so now I'm at 32.75". Then, the pipe has to rise a 1/4" per foot and it has to go about a foot and a half or so, so I'm factoring in a 1/2" for rise. Now I'm at 33.25" and my lintel is 34". Have I got that right? Is there something I've forgotten to factor in?
Thanks.
I'm trying to get the hearth as thin as possible because I don't think I have much room for the rear vent pipe to clear the lintel of my fireplace. The rear vent is 27.75" on center, which I think with 6" pipe would mean the top of the pipe would be at 30.75". I also need the pipe shield, which adds an inch to this, so now I'm at 31.75". I'm hoping my hearth will only raise the stove an inch, so now I'm at 32.75". Then, the pipe has to rise a 1/4" per foot and it has to go about a foot and a half or so, so I'm factoring in a 1/2" for rise. Now I'm at 33.25" and my lintel is 34". Have I got that right? Is there something I've forgotten to factor in?
Thanks.