Exam 3 Questions with Correct
Answers
2 12 - ANSWERSWhat is the dividing height of a steep verses low-sloping roof?
structural surface that supports the roofing system - ANSWERSWhat is the purpose of a
roof deck?
Wood (OSB or plywood), Corrugated steel, Concrete (sitecase or precast), Composite
deck (corrugated steel and concrete) - ANSWERSWhat are the 4 types of Roof deck?
roofs - ANSWERSWhat are your first protection against weather?
substrate board - ANSWERSThis is fastened over a wood roof deck to provide a
suitable surface for hot asphalt to be applied
screws with oversized washers - ANSWERSWhat are used to resist wind uplift forces
on a roof?
low sloped - ANSWERSWhat type of roof is substrate board used for?
substrate board - ANSWERSWhat type of roof decking is used on low-sloped roofs?
bottom up - ANSWERSAlways work from the ______ __.
slow the passage of heat into and out of the building - ANSWERSWhat is the purpose
of Thermal insulation?
Batt, Cellulose fiberboard, perlite, foam - ANSWERSWhat are the 4 types of insulation?
Balliste - ANSWERSthe rocks that they put on top of roofing stuff to protect it
modified bitumen - ANSWERSroof type that they use a flame thrower on to put down
built-up system - ANSWERSroof type where they lay hot tar, lay asphaltic paper down,
then cover with balliste (rocks)
modified bitumen - ANSWERSWhat's the best type of roof system?
safer, less messy, easier to install - ANSWERS
, area divider - ANSWERSdesigned to allow some movement in the membrane and
subdivide it
membrane - ANSWERSIf the deck is the hard part of the roof, what is the first line of
defense?
restrict the passage of water vapor and humidity - ANSWERSWhat is the purpose of
vapor retarders?
plastic sheets, bituminous membranes, roofing felts embedded in hot asphalt -
ANSWERSWhat are the 3 types of vapor retarders?
metal - ANSWERSWhat type of roofs are ice and water shields usually for?
placed around edges and at penetration to prevent water penetration - ANSWERSWhat
is the purpose of Flashing and Misc items?
pitch pan - ANSWERSbox on the roof with pitch poured into it
base - ANSWERSWhere the BUR membrane meets a vertical parapet wall, the
membrane and _______ flashing are turned up and sealed to the wall.
counter - ANSWERSMetal ________ flashing covers the roof membrane termination,
protecting this vulnerable condition from physical damage and leaking.
interior drain detail - ANSWERSThis roofing element lets water drain inside the building
first and then to the outside through a scupper or Lamb's tongue drain
scupper or lamb's tongue - ANSWERSWhat are the two types of drains that water will
be drained out of from inside the building?
2 12 - ANSWERSWhat pitch must a shingle roof have?
UV rays - ANSWERSWhat break down shingles?
roof deck (OSB/plywood), 30lb bitumen, shingles - ANSWERSWhat is the order of
layers on a shingle roof?
outside of shingle - ANSWERSWhat is the primary water protection layer on a shingle
roof?
squares, 100sqft - ANSWERSWhat is a roofing area measured in and what does that
equal in square feet?
15-25 - ANSWERSHow many years does a shingle roof last?