Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Home Inspection > Roofing, Flashings & Chimneys > Flashcards

Roofing, Flashings & Chimneys Flashcards

1
Q

Two main categories of roofing systems

A

Sloped Roof (steep roofs) 4 in 12 > and flat roofs (low sloped roof) between 2 in 12 and 4 in 12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Roof Pitch

A

ratio of the vertical rise over a set horizontal run(12 ft) so a 6 in 12 is 6 ft vertical rise over 12 ft horizontal run

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Asphalt Shingles

A

asphalt impregnated felt paper or glass fiber mats, coated with a layer of asphalt and covered with granular material

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Asphalt Shingles - Life expectancy

A

15, 20, 25, 30 or 35 year - manufacturer’s warranty

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Asphalt Shingles - wear factor

A

Exposure (sun) and slop (steeper the slope the longer they last)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Asphalt Shingles - self-sealing shingle

A

self sealing strip that sticks 2 shingles together to protect shingles from being blown off in heavy winds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Asphalt Shingles - granular material

A

protects the shingle from ultra violet light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Shingles used for roof pitch between 2 in 12 and 4 in 12

A

conventional asphalt shingles but first cover the roof with non-perforated, asphalt-saturated felt papers or a waterproof membrane

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Re-Roofing asphalt shingles

A

Can re-roof over one layer but they will perform better and last longer if you remove the old roofing material. Can’t go over 2 layers.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Difference between wood shingles and shakes

A

Wood shingles are machine cut and typically smaller, thinner and more uniform and thicker. Wood shakes are hand or mechanically split and have a much more uneven surface.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Wood shingles - life expectancy

A

30 to 40 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Wood shingles - re-roofing

A

You can install over a layer of ashpalt shingle but it is better to remove existing shingles to allow wood roof to breathe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Wood Shingles - How much is exposed to weather

A

1/3 of the wood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Slate Roof - life expectancy

A

200 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Slate Roof - Biggest Problem

A

The nails that hold the slate in place rust and allow the slate to come loose and then water rusts the nails of nearby slates

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Slate Roof - reroofing

A

Slate roofs should never be installed over another layer of roofing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Slate Roof - Flashing

A

Slate roofs generally outlast the flashing and require a section of roof to be replaced

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Concrete Roof Tiles - Replace asphalt

A

Concrete roof tiles are much heavier than asphalt shingles and may require modifications to the roof structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Fiber Cement Shingle - Life Expectancy

A

30 to 50 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Types of Metal Roofs

A

Copper, Steel, terne and tin

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Metal Roofs and tar

A

Metal roofs should never be covered with tar because moisture trapped below will cause rust

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Corrugated Plastic Roof usage

A

Generally used over patios and light structures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Built-Up Roofing (Tar and gravel)

A

They are multiply consisting of two to five plies of roofing felts with a coating of asphalt in between layers. A flood coat of asphalt is then applied on top and covered with gravel to reflect ultraviolet light and protect roof from mechanical damage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Built-Up Roofing - slope

A

They are designed for flat appilcation with a slope that is no greater than 3 in 12.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Built-Up Roofing - Life Expectency

A

two ply roofs - 5 to 10 years, 4 ply roofs 15 to 20 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Built-Up Roofing - Wear factors

A

If moisture is trapped below or within membranes, blisters and bubbles form

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

Build-Up Roofing - Water ponding

A

water ponding on a short roof life by 50%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

Built-Up Roofing - Re-roofing

A

It is common to install over the top of existing, best practice is to remove old roof first

29
Q

Build-Up Roofing - Leaks

A

Because of construction of built-up roofs, leaks are difficult to isolate and repair. Water can travel a significant distance before you see the stain on the ceiling.

30
Q

Roll Roofing/Selvage Roofing

A

Comes in typical rolls of 18 or 36 inches

31
Q

Roll Roofing - Attachment to roof

A

It is either attached with roofing cement, sealed at the seams or nailed at the edges

32
Q

Roll Roofing - Life Expectancy

A

5 to 10 years

33
Q

Single-ply roofing membranes

A

thermosets, thermoplastics, and modified bitumens.

34
Q

Single-ply membranes - common problems

A

seam, flashing and installation problems

35
Q

Modified Bitumen Roofing - UV protection

A

By a coating of granules, foil or paint

36
Q

Single Ply membranes - Re-roofing

A

Most plastic and synthetic rubber roof membranes are not compatible with asphalt and should not be installed over built up roofs

37
Q

General Roofing - Max number of layers of asphalt shingles

A

two

38
Q

General Roofing - What 4 areas are vulnerable to leakage

A

Joints, seams, change in roof direction, things that obstruct the flow of water (chimneys, dormers)

39
Q

General Roofing - Tree Branches

A

Tree branches will rub the shingle and damage the roof

40
Q

General Roofing - Ice damning

A

Is most common on low sloped roof

41
Q

General Roofing - 4 - Ice daming solutions

A

increase attic insulation, increase attic ventilation, seal openings in attic floor and seal/insulate attic heating ducts

42
Q

General Roofing - How does Ice daming occur

A

Occurs when snow and ice collect, often at the eaves. Melting snow on the upper portion of the roof, warmed by the attic, cannot drain properly as it is trapped behind the still frozen dam at the cold eaves.

43
Q

Where are flashing used?

A

They are used where dissimilar materials meet, where a material changes direction, at roof penetrations and at joints in materials - When a roof line changes direction, a ridge, a valley, or a hip is created.

44
Q

4 materials used for flashing

A

Steel, aluminum, lead or copper

45
Q

Difference between an open and closed valley

A

An open valley has the metal showing a closed valley has shingles covering it

46
Q

How many layers of roll roofing can be used in the valley for flashing

A

two

47
Q

Best material to use for flashing

A

Metal

48
Q

What material is used for hip and ridge flashing on asphalt shingle roofs

A

flexible shingles

49
Q

Where the flat roof meets the sloped roof the membrane should extend?

A

3 feet up the roof

50
Q

What are the 2 types of roof to wall flashing required when a roof slope is parallel to a wall

A

Counter flashing and “L” shaped step flashing

51
Q

On roof//sidewall intersection, how far about the roof surface should wood siding materials be?

A

2 inch

52
Q

When is a chimney more likely to leak?

A

When it is installed at the bottom on the roof versus the peak.

53
Q

What precautions should be taken when installing high side portion of chimney flashing?

A

The flashing on the high side should typically extend up at least 6 inches or one-sixth of the width of the chimney whichever is greater

54
Q

What should be installed over the top of a parapet wall?

A

Cap flashing

55
Q

What materials are used for flashing around plumbing stacks?

A

Metal or rubber flashing

56
Q

What is a pitch pan?

A

a sheet metal pan round the stack or mast is filled with pitch or tar to a depth of one to two inches.

57
Q

A skylight should sit on a curb that protrudes how man inches about the sloped roof surface?

A

4 inch minimum

58
Q

What is the purpose of a gravel stop?

A

securing and protecting the roof membrane at the edge of the roof, preventing the gravel from sliding off the roof, and forming a drip edge to keep water run-off from damaging the wood fasci

59
Q

Chimneys are constructed of?

A

Masonry or metal

60
Q

What is a chimney flue

A

Separate channel for smoke to the outside

61
Q

What can share a flue?

A

2 appliances on the same floor of the house

62
Q

3 common materials used to line a chimney-flue

A

Clay tile, metal or asbestos cement pipe

63
Q

Most common element in chimney deterioration?

A

Water

64
Q

What would a ring of accelerated deterioration around the exterior of a masonry chimney indicate to you?

A

There is a gap in the tile liner of the chimney

65
Q

Chimney Cap

A

to protect the top surface of a masonry chimney from water usually concrete

66
Q

Rain Cap

A

covers the chimney flue to prevent water from entering the flues

67
Q

Chimney Bracing

A

Should be on masonry chimneys that are more than 12 feet above last support and metal chimney’s that are over 5 to 6 feet tall

68
Q

Chimney Height

A

minimum of 3 feet above the point of penetration through the roof and two feet higher than anything withing 10 feet of them to help ensure good drafts

Home Inspection (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions