Re: cheap excellent material for oven walls
So today I contacted James Hardie Building products. I requested their detailed test reports, and the tech support person told me that the test reports cost money so I just asked my questions. I was told that all samples tested made it to the full 1382 deg F with no deformation (he also said it can withstand direct flame. He didn’t say for how long or how much flame but he did add that in). There was no scorching, flame spread, or noticeable smoke formation. I told him my plans for the material included a constant exposure to 500 deg F temps (I figured I would over shoot some). He said there would be no problem with this. He did warn me that the board is not meant to be used as an insulator and I would need to watch for the approximate 250 deg flash point of lumber 2x4’s. When I then mentioned I would be using metal studs he gave the thumbs up that everything should be good.
He did not know about any fumes that might be released and gave to common better safe than sorry answer on venting.
Ps. I would also like to see some pics of your oven you built.
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