NC-13 install

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gnatboy911

Member
Jan 10, 2011
71
Western, CO
Well, after months and months of research and measuring I can see the light at the end of the tunnel. I purchased my stove and manufactured home chimney kit through Home Depot, double wall stove pipe from Northline Express.

I was most nervous about putting in the support box, but everything went great. I have finished the frame of the hearth, and put the first layer of plywood down.

To meet the high r-value requirement of this stove I'm using two layers of 5/8 mglass; a fiberglass coated gypsum board. Then two layers of durock, and tile on top. Mglass layer is .59, and durock is .41. The mglass was only 21.00 for a 4x8 sheet.

I have all my materials, except tile. Now I just need the time to finish it.

Here are a few pictures. A big thanks to this forum and it's members. I've done tons of reading and researching on here.

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I was pretty nervous cutting my roof open!

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The subfloor wasn't level so I had to use some shims.
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Mglass is not non combustible just fire rated it cant be used in that application
 
What exact product is the matt glass gypsum board? I've never used it but I see that GlasRoc is rated noncombustible when tested in accordance with ASTM E136. It's rated R=.57 in 5/8" sheets, or .45 in 1/2" sheets. Durock NexGen is rated R=.39 for 1/2" sheets.
http://www.certainteed.com/resources/CTG_2359_GlasRoc_Sheathing_DSS.pdf
Here is the product website and info. I was able to find it locally stocked at a drywall supply company.

http://www.americangypsum.com/products/m-glass-exterior-sheathing
 
They give m-glass the same ASTM E136 rating of non-combustible. Thermal Resistance “R” Value 1/2” = 0.50, 5/8” = 0.61
 
nice, wish i'd have known about this when i was building my hearth, oh well live and learn.
 
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UPDATE: Well I've been busy with other things and haven't had time to work on the hearth. But, put in some hours this weekend.

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I'm no tile pro by any means, so it took me a while and a few messed up pieces. But, got it sorta figured out. Now I just need to thin set and grout it.
 
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Unique looking hearth ... I like it.
 
I love the porcelian tile that looks like wood. I have a dark version of that in my mud room. Looks great up against white trim.
 
Houston, we have lift-off! Congrats!
 
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