Membrane Roofing

Question 1

applied in thin sheets to nearly flat roofs,

or liquid applied to any slope roof.

Answer 1

membrane roofing

Question 2

term for:

standing water = deflection, = > water, > deflection, until fail.

Answer 2

ponding

Question 3

overlapping layers of bituminous (asphalt/coal-tar pitch) saturated felts,
cemented w roofing cements.
installed over nailable/non-nailable decks.

Answer 3

built-up roofing:

Question 4

built-up roofing:

process

Answer 4

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.

Question 5

built-up roofing:
# of layers

Answer 5

based on guarantee period desired,

and type of deck used.

Question 6

built-up roofing:

coveed w

Answer 6

gravel/ crushed slag

sun/weather protection

Question 7

scuppers: aka

Answer 7

overflow drains

Question 8

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.

Answer 8

scuppers

Question 9

continuous triangular block, supports flashing

Answer 9

cant strips

Question 10

metal enclosure surrounds an object projected through roof,

filled w bituminous mat’l.

Answer 10

pitch pan

*often leaks, so cant strips/flashing are better option