vinyl back insulation

[lamanated]

Try building demolition places or craigslist,
I see the rolls on there every so often

 

[sailfast]

Try building demolition places or craigslist,
I see the rolls on there every so often

NO!
Do not reuse!
Huge fire hazard.
The reclaimed insulation will be more flammable than usual because of the diesel fumes filtered by it over the years.
Set it on fire some time.... it can be spectacular.
Btw... new fiberglass burns as well.