"Steve B" wrote in message
...

"ATP" wrote

When you try to spread it it gets all gooky and rolls up. It will fall
and drip out of cracks, etc. before it cures. It will stay in place as it
ages but is subject to some UV degradation if not protected. It gets
brittle but doesn't fall off.

Thanks, that's what I was wondering about was the workability time. This
will be subject to heat from metal in sun, but no direct UV rays. Do you
think it will still degrade? I was thinking of making some little dams
out of cardboard for holes and things that I want to fill to hold it until
it skins over. It will all be covered by something to protect it from UV.

Steve

Steve
The heat should be no problem at all, but working directly overhead will
take some experimentation unless the holes are deep and relatively narrow.
There are also low expansion versions of the foam that may be easier to work
with. After curing the foam can be cut and trimmed with a saw if necessary.