Amber Book Roofs

Question 1

What is the minimum slope for a roof?

Answer 1

1/4” per foot or 2%

Question 2

What is the slope for a steep roof?

Answer 2

2” per foot and greater

Question 3

What is the slope for a low sloped roof?

Answer 3

1/4” per foot to 2” per foot

Question 4

What types of materials are used for steep roofs?

Answer 4

shakes, shingles, thatching, clay or concrete tiles

Question 5

What does water vapor do to roof membranes?

Answer 5

blistering, flapping, displace or crack

Question 6

What are the 3 families of low sloped roofs?

Answer 6

bituminous, single ply, fluid applied

Question 7

What is the code for back up drains?

Answer 7

no more than 2” above primary drains

Question 8

What is the diameter of a strainer?

Answer 8

twice the area of the drain pipe

Question 9

What is epdm and what is it used for?

Answer 9

plastic, for single ply roofs

Question 10

What is gravel ballast used for?

Answer 10

protection of the asphalt from the sun. it weighs it down so it doesn’t uplift. often a thermal mass and white.

Question 11

What does a pitch pan do?

Answer 11

mechanically protects around penetrations, but it leaks

Question 12

What does a cone shaped boot do?

Answer 12

clamps the top of the ppe and tapers it outward, mechanically diverts water

Question 13

What does a cant strip do?

Answer 13

it is a block that angles the membrane 45 degrees so water doesn’t get stuck at corners

Question 14

A high albedo is what color?

Answer 14

white

Question 15

High emissivity does what?

Answer 15

it releases heat more, so it can cool itself more effectively

Question 16

What are wood battens used for?

Answer 16

wood blocks in the standing seams in metal roofs

Question 17

What is skip sheathing

Answer 17

discontinous shingles; boards with gaps for air movement

Question 18

What does a tangle fiber breathing matte do?

Answer 18

it is a mat under the shingles that allows air movement