Old 07-03-2014, 05:41 PM
Join Date: May 2014
Location: Calgary
Posts: 3
Default Can I use this board for the Hearth?


I am wondering if I can use this board from McGills Warehouse as the Insulation part for the hearth instead of the vermiculite.

McGills Warehouse Online Department Store,

Do I only need one case of the 2 foot by 3 foot boards? (One case seems to be 3 of these boards for $97).

Thanks so much for your help!

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Old 07-08-2014, 07:16 AM
boerwarrior's Avatar
Join Date: Apr 2013
Location: Santa Rosa, CA
Posts: 450
Default Re: Can I use this board for the Hearth?


those boards look good to me. If you only buy one case you will have a base that is 2 inches thick which is probably fine. Good luck!
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Old 07-08-2014, 02:56 PM
UtahBeehiver's Avatar
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Join Date: May 2012
Location: Salt Lake City, Utah
Posts: 1,552
Default Re: Can I use this board for the Hearth?

Have you done a "refractory materials" search in Calgary? I did a quick one and at least a couple place popped up, one was a ANH supplier which is a large one here in the states. Might be less expensive than shipping from Calf.
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Old 07-08-2014, 04:22 PM
GianniFocaccia's Avatar
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Join Date: Jun 2009
Location: Disneyland, CA
Posts: 1,621
Default Re: Can I use this board for the Hearth?

For less than $93 plus shipping I would think you can source vermiculite and portland locally. A 4" of 5-1 vermiculite/portland cement mix will provide the same amount of insulation as 2" of CF board.

For what its worth, I bought my CF blanket from McGills and honestly, it was the dirtiest, creepiest retail establishment I have ever dealt with, ever. If there were dead bodies hidden in the corners of their dark 'warehouse' I would not be surprised. I felt strangely fortunate to escape out of there with my life.The refractories McGills sells are admittedly not high quality, but they do work.
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Old 07-19-2014, 07:38 PM
Join Date: Dec 2009
Location: hawaii
Posts: 57
Default Re: Can I use this board for the Hearth?

Those are low density fiber boards . I purchase allot of refractory from them. I have used that fiberboard in one of the kilns I build for my shop.
it is not very strong as it is low density kind of soft and spongy
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