Micore alternative?

[cousinscarpentry]

After reviewing this forum for awhile I decided to go with an Englander 13-NC as my first stove. It requires a hearth pad with an R value of 2. I found some sites to order Micore from, but I saw this on home depot's site.

http://www.homedepot.com/p/Sound-Ba...-ft-x-8-ft-R-1-2-Sound-Board-206136/202090212

Says it has an R value of 1.2. Would this be ok to use? I was thinking sandwiching a couple sheets of this with some durarock if so.

I would like to find something that Lowe's or HD has in stock instead of waiting for Micore to ship.

Thanks

 

[begreen]

Hard to tell without more info than what is on HD's site. It might actually be micore. Do they stock it at your local HD?

 

[cousinscarpentry]

yes it is in stock!

 

[cousinscarpentry]

I clicked on info and guides on the HD page and it says:

"Flame Spread: 76 to 200 tested in accordance with ASTM E 84, Class III or C.

Is that a no go?

 

[rwhite]

IIRC Combustible materials are rated class a,b,c. A has the lowest rate of spread. So even though it has a high r value it is combustible. Micore is a tough find unless you need an entire bunk. I located some old cubicle panels and stripped the fabric off to get the micore. If you find panels that seem solid its a goid bet they have 2 sheets of micore in them.

 

[begreen]

The hearth needs non-combustible materials. Micore is mineral fiber. The 440 Sound Barrier board appears to be made of cellulose and 1-6% paraffin.

Product Identification: Medium Density Fiber Board (Cellulose Based)