it says its only 90 thermal resistant but usless you have like 6 x 600watt hps i dont think you should have a problem, could do the celing just to be safe
tomcromp Reviewed by tomcromp on . thermal imaging and c3 i brought some c3 sheet and put it on my front facing wall of my grow room, so if the police use hand held thermal imaging they wont see the heat on my front wall, im venting out into my loft/attic and worried about the heat build up as you get the occasional hellicopter go by. I can put the c3 sheeting in the loft but wont be able to put it everywhere as the space up there is too tight. Any suggestions would be great Rating: 5