Screens block air by HOW MUCH during ventilation?
Was asked a question the other day and can't find the answer anywhere. Its been driving me crazy that I can't find the answer so I thought I'd thow it out here:
Does anyone know how much that screens in a window will block airflow during ventilation operations? I'm looking for a percentage. For some reason it seems like I've heard 75-80% of the air is blocked by the screen, but I can't verify it anywhere.
Thanks for satisfying my curiosity!
Enough to smother a fire.....
Ran a call one time and when we got there, the citizen advised they came and found that there was a fire in their home. Turns out there was a fire in an upstairs bedroom which had burned itself out. One of the windows had been open with the screen still in place. There was enough soot and other by products that had clogged the screen enough to cut out the oxygen supply. Weirdest thing I had seen.