[T2] [Q] Heat Resistant Foam
David C Matthews dcm7293 at gmail.comThu May 10 10:33:18 PDT 2018
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Also working on the engine compartment and thinking about how to insulate the ceiling. Noticed on an unrelated project that spray-able foams (i.e. Great Stuff) do not stick to plastic. That means you can use plastic to provide an expansion barrier when applying foam, peeling off the plastic once the foam is cured. Applying this technique to the ceiling of the engine compartment, plan on temporarily attaching plastic drop cloth to the ribbing (probably with rubber cement). Foam will then be squirted into the "mold" by poking the application nozzle through the plastic. Once cured, the plastic will be peeled and the rubber cement scrubbed off. The question is whether the fire-block types of foam will provide the necessary thermal characteristics. Found two fire-block types of spray-able foam, and they each are supposed to handle temperatures up to 240-250 degrees F. Is that sufficient? Have not put a thermometer in the engine compartment (yet). David
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