Chapter 1

Question 1

The number of lawsuits involving ________ equals or exceeds the total number of lawsuits over all other building systems combined

Answer 1

low-slope roof systems

Question 2

What is it called when flat asphaltic roofs begin to crack and dry out in random patterns (hint: skin)

Answer 2

Alligatoring

Question 3

In regards to roofing systems, XPS can be an issue for what reason?

Answer 3

difficult to adhere to (sandwiched between deck and membrane)

Question 4

Vapor Retarder is used in a roof system for what purpose?

Answer 4

Insulation often entraps water. The vapor retarder is designed to intercept the flow of water vapor into the insulation

Question 5

Dead-Level Roof

Answer 5

no slope or slant

Question 6

A roof is considered flat is the pitch is less than ___________

Answer 6

10 degrees

Question 7

Why is re-covering considered to be about 50% greater risk than replacing the roof system?

Answer 7

1. Anchoring through the old system requires longer fasteners.
2. Moisture retained in the old system can corrode the fasteners.
3. Flashings are more complicated

Question 8

What is RICOWI

Answer 8

Roofing Industry Committee on Wind Issues

Question 9

What are RICOWI’s goals?

Answer 9

1. to promote and coordinate research
2. accelerate the promulgation of mew standards for design and testing
3. educate the building industry on roof problems