Greetings from the Florida Panhandle
Welcome to the Forums. We're glad to have you with us.
We have been using the silver bubble insulation in our Airstreams for ten years now without any ill effects whatsoever. We have pieces cut to fit all of Lucy's windows, her skylight, and her Fantastic Fans. We even use it on the windows for cold weather camping.
You can buy this stuff in a 40" roll at Lowes. One roll is enough to do a 25' Airstream twice.
SuEllyn & Brian McCabe
WBCCI #3628 -- AIR #14872 -- TAC #FL-7
2015 FC 25' FB (Lucy) with HAHA
2005 Suburban 2500 Quadrasteer (Olivia) & 2011 Silverado 3500 (Fred) with Outfitter Truck Camper (Ethel)