Roofing IL - Day 1

Question 1

What provides the weatherproofing in a built up roof system?

Answer 1

Bitmen

Question 2

A roof with a slope of 5/12 is considered?

Answer 2

Steep Slope

Question 3

A rafter that extends diagonally from an outside corner of a building to the ridge board is called?

Answer 3

Hip rafter

Question 4

The temperature in which heated bitumen is at proper viscosity is?

Answer 4

560*

Question 5

The projecting edge of a roof extending beyond the supporting wall is called?

Answer 5

Eave

Question 6

What provides the waterproofing and reinforcement in single-ply membrane?

Answer 6

Polymers

Question 7

What can lead to the splitting, buckling and ridging of roof membranes?

Answer 7

Poor installation

Question 8

Bitmen is also known as?

Answer 8

Tar

Question 9

Built-up roof systems are?

Answer 9

Resistant to wind up-lift

Question 10

What should be installed on the same plane and line as the building’s structural expansion?

Answer 10

Roof expansion joint

Question 11

In asphalt shingle construction, the natural-colored mineral granules are primarily added for?

Answer 11

Providing ultra-violet & weathering protection

Question 12

How many nails in a high wind areas may be required per shingle?

Answer 12

6

Question 13

How many types of valley construction is in asphalt shingle?

Answer 13

3

Question 14

What is the absorption rates of clay tile?

Answer 14

2-10

Question 15

How much can 100 to 700 slate pieces weigh?

Answer 15

2 ton

Question 16

Preferred number of nails to fasten a roof slate is?

Answer 16

2

Question 17

Preferred material for nail in slate is?

Answer 17

Copper

Question 18

Bitumen becomes what with heat?

Answer 18

Fluid

Question 19

A square measures?

Answer 19

10 foot by 10 foot

Question 20

The recommended spacing for plywood sheathing at the butt end is?

Answer 20

1/8

Question 21

The recommended thickness for OSB with a rafter spacing of 16” is?

Answer 21

15/32

Question 22

The dead load of a roof is the weight of the roof deck, shingles and?

Answer 22

Underlayment

Question 23

Underlayment in roofs of 4:12 or more, the upper courses of felt should overlap the lower courses by at least how many inches?

Answer 23

2”

Question 24

Which type of single-ply membrane which are field applied using only one layer of membrane material is vulcanized during manufacturing ?

Answer 24

Thermoset

Question 25

A single-ply roof membrane has two basic principal components.

Answer 25

Water proof + reinforcement

Question 26

Name the three primary parts of a membrane roof system?

Answer 26

Insulation, roof membrane, surfesing

Question 27

A roof with a slope of 4: 12 (chart 1.054) has a run of 24 feet. what is the length of the rafter?

Answer 27

25.30 (24 x 1.054)

Question 28

Convert 7 inches into decimals

Answer 28

.58 (7 divided by 12)

Question 29

True or false: Underlayment adds to the fire rating of the roof system?

Answer 29

True

Question 30

What are the non-stationary loads a roof deck must carry?

Answer 30

Mobile installation equipment and labor

Question 31

Composition for structural lightweight concrete?

Answer 31

Cement, water, shale, clay or slate aggregates

Question 32

Which is the weatherproofing component in BUR membranes?

Answer 32

Bitumen or cold-applied adhesives

Question 33

What is the best way to install BUR membranes?

Answer 33

Sandwiched between layers of hot bitumen or cold-applied adhesives

Question 34

Which adds the most fire resistance in low slope membranes?

Answer 34

Aggregates, pea gravel or similar materials (rocks don't burn)

Question 35

Whats recommended when heating bitumen during installation?

Answer 35

Circulate bitumen while heating

Question 36

Whats the best way to lay BUR plies?

Answer 36

Lay in a single, complete membrane, all on the same day

Question 37

Whats the most accurate regarding the best roofing system?

Answer 37

A roof matched closely to building specifications and requirements

Question 38

Which is not the purpose of a roof deck?

Answer 38

Waterproofing

Question 39

What is the minimum recommendation for replacement of expansion joints in a roof final assembly?

Answer 39

Same plane or line as a buildings structural expansion joints

Question 40

Whats the main purpose of expansion joints in low-slope system?

Answer 40

To minimize the effects of stresses and movements

Question 41

What provides the reinforcement in non-reinforced thermoset or thermoplastic membranes?

Answer 41

Polymers making up thermoset or thermoplastics

Question 42

How high can EVT rise for heated bitumen?

Answer 42

560 degrees

Question 43

What is the movement of water vapor?

Answer 43

Vapor drive moves from inside to outside in cooling weather

Question 44

In vaulted ceilings , which would most likely lead to rapid deterioration of a roof?

Answer 44

Insulated, not vented decks

Question 45

Why does the NRCA not recommend OSB?

Answer 45

OSB retains more moisture which can dislodge fasteners

Question 46

What size water and ice dam protection should be used on a roof with a slope less than 4:12?

Answer 46

Minimum of 36 from the inside the exterior wall

Question 47

What type of valley would need to be enlarged when ice and snow are present?

Answer 47

Open valleys

Question 48

Which would be the most appropriate when installing downslope side chimney flashing?

Answer 48

Apron flashing

Question 49

How should crickets in the upslope side of a chimney be constructed?

Answer 49

Wood framing

Question 50

What does the NRCA recommend when installing drip edge , or eave edge metal flashing?

Answer 50

Extend underlayment over the flange

Question 51

What can be used in place of a water and ice dam protection in a tile roofing system?

Answer 51

Two-ply underlayment with interply of asphalt roof cement adhesive.

Question 52

Proper low-slope drainage with dry weather.

Answer 52

48 hours following moisture related weather

Question 53

Which would least likely result from poor drainage?

Answer 53

Immediate changes to slope and structural integrity of the roof deck.

Question 54

Why are pitch-pockets not recommended?

Answer 54

They need frequent repair

Question 55

Whats the purpose of eave closures in a tile roof?

Answer 55

To prevent birds, insects etc from entering the ends of the first tile course.

Question 56

Which is the most common pattern in a wood roof?

Answer 56

Straight line

Question 57

Which is the purpose of a batten system in a tile roof?

Answer 57

To straighten the bond between the tiles and roof

Question 58

What does the NrCA recommend when installing an asphalt shingle roof?

Answer 58

Minimum of 6 nails per shingle in high wind areas

Question 59

What slope does the NRCA recommend slate roofing have a waterproof membrane under slate?

Answer 59

All slopes

Question 60

What fasteners should be used to attach slate to roof decks?

Answer 60

Copper nails

Question 61

Which would not likely create interior damage?

Answer 61

Built-in gutter at eave

Question 62

What is used for moisture control in low-slope roofs?

Answer 62

Vapor retarders

Question 63

Moisture in the air, takes form of?

Answer 63

Vapor

Question 64

Vapor drive can be characterized by the phrase:

Answer 64

Warm chasing cold

Question 65

Reduces the flow of water vapor and prevents warm humid air from contracting a cold surface and is called a?

Answer 65

Vapor retarder

Question 66

How many mopping of hot asphalt over two plies of fiberglass ply felt are required to give a perm rating of 0?

Answer 66

2-3

Question 67

The recommended spacing for hangers for gutters is?

Answer 67

3'

Question 68

the recomended distance the ice and water shield should run upslope a roof with a slope LESS THAN 4:12 in a heavy snowfall area is?

Answer 68

36"

Question 69

What do you call a second roof built on top of the primary roof to increase the slope of a roof or valley or chimney or penetration wider than 24"?

Answer 69

Cricket