Inspecting an attic today I came across a roof deck and rafters that looked like they had been sanded smooth. There was also the strange black marks which appeared to be a tar like substance. It was pliable…at first I thought it was char from a fire.
My hunch is this attic, which has poor ventilation by the way, was dry ice blasted to remove mold/mildew. Has anyone seen the results of dry ice blasting and does it look like this. I’d like to have an explanation for the condition.
Last photo is just for fun…there was a nice depression in the roof on the exterior that raised some suspicion.
As usual, I am eternally grateful for any insight!