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GC License Test > Roofing Construction & Estimating > Flashcards

Roofing Construction & Estimating Flashcards

1
Q

What is counter flashing?

A

Flashing built into the vertical surface and bent down over the base flashing is called counter flashing

P.93

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2
Q

A wood shake or shingle roof is considered beyond repair when?

A

The cost of repair exceeds 80% of the replacement cost.

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3
Q

If the exposure of three tab, 12-in wide fiberglass shingles is 5 in, the headlap would normally be ________ inches

A

2in
P. 109

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4
Q

When using roll roofing the starter strip should be nailed so that it overhangs the edge by how many inches?

A

1/4”

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5
Q

Approximately how many pounds of nails are required per square foot for asphalt shingles?

A

Two and a half pound

2 1/2 lbs

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6
Q

What is drip edge attached to?

A

Roof deck

P. 41

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7
Q

What is the maximum temperature to which you can heat TYPE III asphalt?

A

475° F

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8
Q

How many nails are typically required for a three tab asphalt shingle?

A

4

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9
Q

What is the minimum end lap for metal roofing panels?

A

6”

P.248

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10
Q

The weight of a coated vapor retarder for a built-up roof is usually between:

A

45-80 pounds per square

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11
Q

When water backs up under shingles and begins leaking into ceilings as a result of freeze/ thaw cycles of snow, this is known as?

A

An ice dam

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12
Q

The underlayment on a roof should lap?

A

2 inches on the edge and 4 in at the ends.

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13
Q

To identify a roof leak?

A

Look for shingles that are worn, curled or damaged.

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14
Q

What is the proper installation technique for step flashing where a sloping roof meets vertical siding walls?

A

Installing step flashing over a shingle so that the next course covers it completely.

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15
Q

The life expectancy of a properly installed aggregated – surfaced BUR system is:

A

20 years

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16
Q

What is the recommended procedure for installing roll roofing?

A

Install when temperature is above 45°, if below 45°, cutting two shorter lengths and let it warm in the sun

17
Q

How is drip edge installed at an Eve end?

A

Under the felt

18
Q

By adding gravel to an aggregate – surface burr system, it does several important things. Which of the following below is a benefit of adding aggregate?

A

It protects the underlying roof system from the heating, drying and weathering effects of elements.

19
Q

How do you seal the seams of the underlayment on a BUR built up roof system?

A

Hot mop it

20
Q

What type of flashing is used for oven valleys on a slate roof?

A

15 inch copper, or .0179 zinc coated

21
Q

How much do concrete tiles weigh per square?

A

900 lb

22
Q

What is the proper spacing of wood shingles when installed on non – continuous ( open or spaced) 1x4 sheathing?

A

Boards are spaced on center A distance equal to the single exposure

23
Q

What area are leaks most likely to occur with a wood shingle roof?

A

When joints line up and three adjacent courses

24
Q

Where is the most likely place An asphalt shingle roof will leak?

A

In the valley

25
Q

On a roof area, what is the raised area around the upper side of a chimney called?

A

P.93

Cricket or saddle

26
Q

What is the most common type of venting for a hip roof?

A

Eve and ridge vents

27
Q

What type of roofing material requires an open valley?

A

Wood shingle or wooden shake

28
Q

What is the widest board recommended for solid roof sheathing?

A

6 in

29
Q

An asphalt emulsion is applied to a bitumen roof with a slope of 4:12. How many gallons of material will be used to cover one square?

A

3 gallons

P.291

30
Q

What is the correct way to repair an asphalt shingle?

A

Caulk an area with tar and sprinkle granules onto it.

31
Q

In built up roofs, can’t strips. Shall extend how many inches of the vertical surface ?

A

5 in

32
Q

What is the formula for figuring the slope of a roof?

A

Rise divided by run

33
Q

How many bundles are in a square of blue label cedar shingles?

A

4

P.151 chart

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