QUESTIONS AND CORRECT ANSWERS
◉ When batt insulation is installed a vapor retarder that __________ is
commonly
Answer: 4 mil polyethylene
◉ What is the minimum amount of space that is allowed between
roof sheeting and insulation to allow the passage of air?
Answer: 1 1/2 in
◉ In a ceiling batt insulation where is the vapor retarder placed?
Answer: Against the back of ceiling finish
◉ A vapor retarder on blanket installation MUST
Answer: Face the warm side of the wall
◉ How should radiant heat barrier be installed
Answer: Either rafters (1st choice)/ perforated
◉ The nailing holes in aluminum and vinyl siding are elongated to
allow for
,Answer: Expansion and contraction
◉ What is the MINIMUM lap of rabbeted horizontal lap siding
Answer: 1/2 inches (R703.5.3)
◉ In a Vinyl soffit installation what type of accessory is used
Answer: J or F Channel (c 677)
◉ What kind of siding can be vertically installed
Answer: Board and Batten/Plywood
◉ Fiber cement siding for exterior weather wall, the minimum
thickness should be
Answer: 5/16 inches (R703.3)
◉ What is the clearance for an exterior wood siding and finish grade
where the wood is untreated
Answer: 8 inches
◉ How is furring installed on horizontal vinyl siding?
Answer: Strips should be installed vertically and completely around
doors and windows
, ◉ What is not a siding accessory?
Answer: Z-channel
◉ The MINIMUN length drywall screw for installing 1/2 inch
gypsum board to wood studs is
Answer: 1 1/4 inches (362 IRC18)
◉ What is the MAXIMUM recommended spacing for 5/8 inch
drywall installed on a wall at right angies to framing members
Answer: 24 inches
◉ what type of gypsum is used in veneer plaster system
Answer: Blueboard
◉ When installing ceiling drywall, end butt joints should
Answer: Not be butted tightly/taped
◉ What kind of drywall is used that is fire resistant to ceilings?
Answer: Type C/X (c 917)
◉ In which direction should drywall be fastened to steel studs?