POR would be a good idea, and the insulation you have sounds fine, similar to the stuff DADS used, or the foil faced bubble stuff a lot of folks use .... most any of them will stick well with contact cement

Bill


Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics