Flashcards in Membrane Roofing Deck (10)
applied in thin sheets to nearly flat roofs,
or liquid applied to any slope roof.
standing water = deflection, = > water, > deflection, until fail.
overlapping layers of bituminous (asphalt/coal-tar pitch) saturated felts,
cemented w roofing cements.
installed over nailable/non-nailable decks.
base sheet (unsaturated felt) nailed to deck,
coating of roofing cement,
3-5 layers saturated felts on top,
each w layer bitumen between,
so felt not touching felt.
# of layers
based on guarantee period desired,
and type of deck used.
gravel/ crushed slag
second means of drainage, if primary clogged.
placed just slightly above top of roof.
used if surrounded by parapet, or nowhere for water to escape.
continuous triangular block, supports flashing