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Thread: Fireproofing attic insulation

  1. #1 Fireproofing attic insulation 
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    I want to insulate an attic using found materials. I was thinking of polystyrene packaging peanuts and crumpled up newspaper. However, I have heard that these are a serious fire hazard.

    Could I treat them with a fire retardant to make them safe? If so, what would be best?

    Another idea was to put the packaging peanuts and crumpled newspaper into cardboard boxes and wrap the cardboard boxes in aluminum foil for fireproofing. Would this work?


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  3. #2  
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    No. The foil would net help. It has very little fire resistance. Try wrapping some crumpled paper up in foil and throw it on a fire to test it.


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  4. #3 Boric acid, sodium borate or ammonium sulfate 
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    Thanks Harold!

    Apparently insulation companies usually use boric acid, sodium borate or ammonium sulfate to make cellulose insulation fire resistant, so I assume I could soak the paper in one of those materials. But what about the polystyrene? Could I soak it in one of those materials? Should I soak a cardboard box and put the polystyrene in the cardboard box?
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  5. #4  
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    I think it would be a good idea for you to test them on a fire yourself - throw them in and see how they react.
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  6. #5  
    Forum Ph.D.
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    YOU AINIT GONNA FIREPROOF SYTROFAOM, won't absorb enough of anything.
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  7. #6 halongas 
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    You could order alot of doublelayered mylarsheets, the kind that inflates..And fill it with a gas that removes oxygen. Halonegas or..helium..imagination..but if its not pressurized, it wont do any good besides where the puncture where made. If U dont invest in many squares that cover the roof..
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