241.
On a wood roof, all may have a sheet metal patch except?
A
Resinous areas
B
Knots
C
Large cracks
D
Rotted wood
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277 practice sets · Page 13 of 14
On a wood roof, all may have a sheet metal patch except?
Resinous areas
Knots
Large cracks
Rotted wood
Oakum applied prior to caulking is called
Sealing
Backer rod
Filler
Gapping
Number 1 straight-split 18 inch long shakes with 7 1/2 inch exposure requires how many bundles per square?
6
3
4
5
Number 1 Straight-split 18 inch by 3/8 inch shingles with an 8 inch exposure has an approximate coverage of how many square feet per square?
75
100
94
80
Normally shingle roofs are the maximum allowed on any structure.
4
1
2
3
No nail should be located closer than inches to the valley center line.
24
6
12
18
No fasteners may be used within inches of centerline in a woven.
3
6
5
4
No fasteners may be used within how many inches of centerline when flashing a closed-cut valley?
6
3
4
5
new 3-tab roof using a 6-inch pattern will require a full shingle on the course.
Fifth
Sixth
Seventh
Third
Narrow EPDM sheets are usually
5 feet 6 inches wide
4 feet 8 inches wide
More than 5 feet wide
Less than 3 feet wide
Nails used for roll roofing should be spaced how far apart?
2 inches
3 inches
4 inches
1 inch
Most leaks occur around vents in about every type of roof, usually because of
Improper flashing
Vent flashing not as wide as it should be
All of the above
Inadequate shingling around a vent
Mission tile weighs approximately how many pounds per square?
900
1000
1300
800
Mineral surfaced roll roofing should be installed when the temperature is above how many degrees?
45
50
60
40
Mineral granules applied over mastic as roof surfacing should be deposited at the rate of pounds per square.
50
50 to 60
60
40 to 50
Mechanically fastened EPDM systems must penetrate how far into concrete decks?
6 inches
1 inch
3/4 inch
1 foot
Mechanical fastening of the membrane installed over treated wood nailers should be
16 inches on center
112 inches on center
8 inches on center
24 inches on center
Mechanical fasteners should penetrate concrete decks at least
2
3
4
1
Lightweight insulates concrete decks must have a minimum compressive strength of pounds per square inch.
75-100
100-125
125-500
50-75
Leaks normally occur around counterflashing during blowing rain because?
The counterflashing doesnt lap far enough over the base flashing
The shingles are not dubbed in cement
The nails do not penetrate the substrate far enough
There is not enough asphalt sealer at the joint