you guys are gunna love this littlke story
my dad was a roofer for 10 years also did built up felt roofing where they use a big blow torch to torch the felt down its a beast, runs of a gas bottle very simple to use. he goes to his van the other day all his system is frozen everythink hummmm
gets the gas torch fires it up and points it in the van via the front door starts blasting(now i know everyone is gunna go idiont) but he didnt burn anything just held it above everything. worked like a dream 2 mins later all ice gone the heat they give of is ammence !! uses it all the time now and its brill. all you gotta do is make sure the flames are no where near anything and its fine
when i first saw him doing it i was like what the..... but it works guys