Hi I'm getting my mate to fully respray my Nova but the weathers crap an cold.He's got a garage but It's got a concrete floor an It's not the warmest, also he said when he's actually spraying he'll have to leave the door open cos of fumes which makes any warm air escape.Is it ok to use halogen heaters when sparyin as I don't want to set the place on fire, also how many would I need in this weather, an I was think of 1200w ones, any ideas? thanks