[T2] [Q] Heat Resistant Foam

[David C Matthews]

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