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Roofing Michigan Questions and Correct
Answers
3 Asphalt shingle clasification Ans: Class A- Severe exposure to
fire, and is made from fiberglass
Class B- Moderate exposure to fire, usually made from asphalt
Class C- Light exposure to Fire
Flashing Location Ans: Should be installed at wall and roof
intersections.
Cricket or Saddle Ans: It should be installed on the ridge of a
chimney if more than 30 inches.
How many layers of underlayment on roof 2:12 - 4=3:12 pitch?
Ans: Two layers. Apply 19-in stripe parallel to the eave and then
apply the 36in underlayment.
How many layers of underlayment for roofs 4:12 and up? Ans: One
layer
What fasteners to use? Ans: Should be galvanized steel, stainless
steel, aluminum. minium 12-guage shank with 3/8" head. should
penetrate more than 3/4 into sheathing.
© 2025 All rights reserved
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how many fasteners per shingle? Ans: not less than 4
Sidewall flashing Ans: Should not be less than 4x4.
Drip edge Ans: Should be overlapped not less than 2in and should
not extend 1/4 in below the sheathing.
Wood shingles overhang` Ans: Should over hang farther than
asphalt shingles. They should extend beyound the fascia 1-1/2".
Wood shakes spacing Ans: 3/8 to 5/8 " apart
Wood shingles sheathing Ans: Can be installed on solid or spaced
sheathing. Sheathing boards must not be less than 1x4"
Wood shingles fasteners Ans: stainles steel typ 304 or 316
Wood shingles spacing Ans: Between 3 and 8" wide and nailed
twice
Mininum slope for metal roof Ans: For roofs without applied lap
sealant should be 3:12
For roofs with lap sealant should be 1.5:12.
For standing-seam roof systems shall be .25:12.
When to use continuous flashing Ans: when a roof dies ot or ends.
Against a skylight, valley, or vertical wall.
© 2025 All rights reserved
Roofing Michigan Questions and Correct
Answers
3 Asphalt shingle clasification Ans: Class A- Severe exposure to
fire, and is made from fiberglass
Class B- Moderate exposure to fire, usually made from asphalt
Class C- Light exposure to Fire
Flashing Location Ans: Should be installed at wall and roof
intersections.
Cricket or Saddle Ans: It should be installed on the ridge of a
chimney if more than 30 inches.
How many layers of underlayment on roof 2:12 - 4=3:12 pitch?
Ans: Two layers. Apply 19-in stripe parallel to the eave and then
apply the 36in underlayment.
How many layers of underlayment for roofs 4:12 and up? Ans: One
layer
What fasteners to use? Ans: Should be galvanized steel, stainless
steel, aluminum. minium 12-guage shank with 3/8" head. should
penetrate more than 3/4 into sheathing.
© 2025 All rights reserved
, 2 | Page
how many fasteners per shingle? Ans: not less than 4
Sidewall flashing Ans: Should not be less than 4x4.
Drip edge Ans: Should be overlapped not less than 2in and should
not extend 1/4 in below the sheathing.
Wood shingles overhang` Ans: Should over hang farther than
asphalt shingles. They should extend beyound the fascia 1-1/2".
Wood shakes spacing Ans: 3/8 to 5/8 " apart
Wood shingles sheathing Ans: Can be installed on solid or spaced
sheathing. Sheathing boards must not be less than 1x4"
Wood shingles fasteners Ans: stainles steel typ 304 or 316
Wood shingles spacing Ans: Between 3 and 8" wide and nailed
twice
Mininum slope for metal roof Ans: For roofs without applied lap
sealant should be 3:12
For roofs with lap sealant should be 1.5:12.
For standing-seam roof systems shall be .25:12.
When to use continuous flashing Ans: when a roof dies ot or ends.
Against a skylight, valley, or vertical wall.
© 2025 All rights reserved
