Roofing and Flashing Flashcards
1
Q
What is the recommended minimum slope for asphalt shingle roofs?
A
:12 (though 4:12 or greater is recommended for proper water runoff).
2
Q
How much should downspouts extend away from the foundation?
A
At least 5 feet to prevent water damage.
3
Q
What is the primary cause of premature shingle failure?
A
Improper ventilation, poor installation, or excessive UV exposure.
4
Q
What is the required height for a deck guardrail?
A
36 inches in residential settings, 42 inches for commercial.
5
Q
: What is the minimum slope for proper drainage on a flat roof?
A
¼ inch per foot (or 2% slope).
6
Q
What is the typical lifespan of an asphalt shingle roof?
A
15–30 years, depending on quality and climate
7
Q
A
