Roofing Flashcards
7 cards from real Other Skilled Trades practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Roofing flashcards as text
What is the minimum recommended slope for asphalt shingles according to most building codes?
Answer: 2:12
Most building codes require a minimum slope of 2:12 (2 inches of rise per 12 inches of run) for standard asphalt shingle installation.
What material is most commonly used as an underlayment beneath asphalt shingles?
Answer: Tar paper (15 lb felt)
15 lb roofing felt (tar paper) is the standard underlayment used beneath asphalt shingles to provide a secondary moisture barrier.
A 'square' of roofing material covers how many square feet?
Answer: 100 sq ft
One roofing square equals 100 square feet; it is the standard unit used to estimate and purchase roofing materials.
What is the purpose of flashing in a roofing system?
Answer: To prevent water infiltration at joints and transitions
Flashing is metal (usually galvanized steel or aluminum) installed at roof transitions, valleys, and penetrations to redirect water away from vulnerable joints.
Which type of roof valley method weaves shingles from both roof planes together across the valley?
Answer: Woven valley
In a woven valley, shingles from alternating roof planes are layered over each other, creating an interwoven pattern for a seamless appearance.
What is the standard exposure (amount of shingle visible) for a 3-tab asphalt shingle with a 12-inch height?
Answer: 5 inches
Standard 3-tab asphalt shingles are 12 inches tall and installed with a 5-inch exposure, providing a 2-inch overlap from the course above.
What is the primary function of a drip edge on a roof?
Answer: To direct water off the roof edge and away from the fascia
Drip edge is a metal flashing installed at roof edges that channels water away from the fascia board and into the gutter, preventing wood rot.