Definition: Any feature that goes into a roof deck.
“She is considering adding a chimney as a penetration.”
Source: http://www.joelsroofingandgutter.com/roofing-terms.php
Definition: Any feature that goes into a roof deck.
“She is considering adding a chimney as a penetration.”
Source: http://www.joelsroofingandgutter.com/roofing-terms.php