Nait Carpentry Class 2 Exterior And Roof Materials

Front 1

Name these 5 siding styles.

Back 1

A)Clap Board

B)Bevel Siding

C)Rabbited Siding

D)Ship Lap

E)Drop

Front 2

What main characteristics of vinyl and aluminum siding must you be aware of during installation?

Back 2

Very sensitive to temperature changes and must be allowed to expand and contract.

Front 3

What must be done to horizontal joints in panal siding?

Back 3

Horizontal joints must be lapped or have flashing installed.

Front 4

How many coats must be installed for a cement stucco wall?

Back 4

3

Front 5

Where is flashing used?

Back 5

All horizontal joints of exterior components except where the upper surface overlaps the lower surface.

Front 6

When should flashing be installed?

Back 6

First before building wrap is applied to carry moisture over the flashing.

Front 7

When would flashing not be required over a window or door?

Back 7

It is not required if the height above the door or window trim is less than 1/4 the width of the eave above.

Front 8

Why is soffit vented?

Back 8

To allow airflow to the attic space

Front 9

Exterior finishes that are adversely affected by moisture must be kept how high above finished grade?

Back 9

200mm 8" above grade

Front 10

List 4 steps in the preparation for installing siding.

Back 10

1)Install flashing

2)Install vapor membrane

3)Install trims, corner and dividers

4)Determine the start point for the siding

Front 11

Define exposure as it relates to siding.

Back 11

The visible dimension of the siding.

Front 12

When installing vinyl corner posts, where does the nailing start?

Back 12

Start at the top of the top slot so corner post hangs from there.

Front 13

Where is j-channel used?

Back 13

Joints between walls and soffit or when vinyl meets another exterior finish. Around windows and doors or anything that projects from the wall.

Front 14

What allowances must be made when cutting vinyl or aluminum siding panels that will meet windows doors or corners?

Back 14

Keep edge of siding 6mm or 1/4" from the edge to allow for expansion.

Front 15

What are siding nails made of?

Back 15

Aluminum, galvanized or stainless steel.

Front 16

How long should nails be used that are used to fasten vinyl siding to sheathing?

Back 16

Long enough to penetrate the sheathing.

Front 17

Describe the depth and placement of nails for vinyl and aluminum siding.

Back 17

Loose , kept 1mm from the siding @ 200-300 o.c. in center of slot.

Front 18

How should the butt joints between siding panels be placed as siding progressed up the wall?

Back 18

Joints should be staggered vertically.

Front 19

When is undersill trim used?

Back 19

Anytime the top of bottom locking strip is removed.

Front 20

Where is the most common place to start vertical siding?

Back 20

From the center.

Front 21

Name 3 methods of finishing outside corners of wood siding.

Back 21

1) corner posts

2)metal cap

3)mitered

Front 22

What must be done to prepare for the first course of bevel or clapboard wood siding?

Back 22

Starter strip furrier must be applied so the first course will be the same angle as the rest.

Front 23

Where should joints in wood siding be placed?

Back 23

Should occur over framing with scarf joints

Front 24

What must be done to the wall to prepare for vertical siding that is not required for horizontal siding?

Back 24

Strapping or blocking must be added for support.

Front 25

When is it most efficient to install soffit and fascia?

Back 25

Before wall finish but it is common to wait til final course is done with the same scaffold.

Front 26

What finishing is required for an open cornice?

Back 26

Installation of blocking and a frieze board to finish off the siding and close the space between the rafters.

Front 27

What is the cornice return?

Back 27

The junction between the rake and the horizontal soffit.

Front 28

What must be done at joints between aluminum siding and brick?

Back 28

must be separated by a dividing material or caulking as aluminum reacts with concrete.

Front 29

What makes wire stucco lath self furring?

Back 29

The mesh has bumps on it that keep it 1/4" 6mm from the wall.

Front 30

What must be done to building corners prior to stucco application?

Back 30

Must be reinforced with an expanded metal mesh extended 6" 150mm on both sides.

Front 31

Name and describe the 3 coats of stucco application.

Back 31

1) Scratch coat 1/4" 6mm because it is scratched to aid bonding

2) Brown coat 1/4" 6mm roughend and dampend to accept final coat

3) finish coat 1/8" 3mm

Front 32

Coats of stucco must be kept at what temp for how long?

Back 32

Min 10degrees for 48 hours

Front 33

What must be done to the footings if masonry veneer is applied to the walls above the footings?

Back 33

Footing size must be increased bu 65mm 2 1/2" for each story of masonry applied.

Front 34

What are 3 methods of support for masonry veneer?

Back 34

1) Foundation wall can be widened
2) Ledge is formed at edge of foundation
3) angle iron is bolted to foundation wall

Front 35

How much space and why must be behind the

masonry veneer?

Back 35

1" 25mm to allow for drainage and ventilation through weep holes spaced at 800mm o.c.

Front 36

How is brick veneer attached to the framed wall?

Back 36

With corrosion resistant ties nailed to the framing and embedded in the mortar.

Front 37

How will the junction between the veneer and the soffit be finished?

Back 37

With a frieze board attached to the soffit.

Front 38

What are the primary functions of roof sheathing?

Back 38

Strengthen the roof system by providing rigidity and prevent racking of rafters and provide a nailing base for roof finish.

Front 39

What is the most commonly used sheathing material.

Back 39

OSB or exterior grade plywood. At one time dimentional lumber was use but too expensive now

Front 40

Is it permissible to use roof sheathing that is marked with US markings only?

Back 40

No, US markings are unapplicable in Canada and should be ignored.

Front 41

What grade and min thickness of plywood or OSB be applied to trusses at 600mm spacing.

Back 41

0-2 grade 3/8 OSB or plywood with blocking or H clips otherwise 1/2" is required.

Front 42

With 18mm fiberboard roof sheathing do all edges require support?

Back 42

Yes with blocking on all edges.

Front 43

What is a vented roof panal?

Back 43

A composite panel of rigid insulation and OSB with a 12mm-19mm space for ventilation between.

Front 44

What materials are used for asphalt shingles?

Back 44

Heavy felt or fiberglass impregnated with asphalt and the top is coated with finely crushed slate.

Front 45

Describe the appearence of a wood hand split shake.

Back 45

Features are rough split face and sawn back producing an uneven surface with the butts varied in size.

Front 46

Describe the appearance of a wood shingle.

Back 46

Smooth and sawn on both surfaces and are uniform in size. can be applied to bothe roofs and walls.

Front 47

Does a standing seam metal roof have exposed fasteners?

Back 47

No. fasteners are hidden clips resulting in a water tight roof.

Front 48

What types of screws are used to fasten corrugated galvanized roofing?

Back 48

Resiliant washer screws or nails.Special care must be used in tightening to prevent water penetration.

Front 49

What is the most important factor to consider when applying tile to an existing roof surface?

Back 49

Ensure roof has adequate structural design due to extra weight.

Front 50

List 2 reasons to use PVC roofing material.

Back 50

a)Excellent durability

b) Corrosion resistant

Front 51

What is the primary application of plastic roofing material?

Back 51

Greenhouses as they as highly resilient to hail and storms

Front 52

List 3 applications for fiberglass roofing.

Back 52

1) Green houses

2) Carports

3)Agricultural Barns

Front 53

Describe the traditional built up roofing systems.

Back 53

On a flat roof it is comprised of several layers of hot applications asphalt, bitumen and a alternate plies of asphalt saturated roofing felt.

applied over rigid insulation followed with a flood coat of bitumen and protective layer of light coloured gravel.

Front 54

What is the gravel purpose in a built up roof.

Back 54

Protect the roofing from the suns harmful effects and for fire protection.

Front 55

What must be done to open valleys to protect them from moisture?

Back 55

must be flashed with 600mm wide sheet metal or 2 layers of roll roofing centered on the valley.

Front 56

How far should the flashing extend up the wall behind the sheathing membrane.

Back 56

75 mm up the wall

Front 57

What is the maximum size a chimney can be before a cricket or saddle is reqired

Back 57

750mm

Front 58

How far must the eave protection extend up the roof slope.

Back 58

Min 900mm up the roof slope to a line not less than 300mm inside the inner face of the exterior wall.

Front 59

What are the lowest slopes to which normal and low slope shingles can be applied?

Back 59

Normal applied to 1:3 slope low slope to 1:6

Front 60

Where is flashing required on a roof surface?

Back 60

All penetrations and intersections.

Front 61

How should underlayment be laid on a roof?

Back 61

Should be layed parallel to the eaves with a overlap on the eave protection by 100 mm and 50 mm on each layer.

Front 62

What is the purpose of a starter strip in asphalt?

Back 62

Prevent water from getting through to the roof through the gaps between the shingles and the notches between tabs.

Front 63

Where should asphlt shingles be nailed?

Back 63

25 to 40 mm from the sides and not less than 12 mm from each cut out.

Front 64

How do you determine the proper exposure when applying asphalt shingles?

Back 64

Exposure distance from manufacturers reccomendations usually about 140mm to ensure that 2 shingle thicknesses over the entire roof.

Front 65

List 3 options for securing asphalt shingle tabs

Back 65

1)Self sealing strips

2)Interlocking features

3)a dab of roof cement no more than 25 mm in diameter.

Front 66

What is benifit of applying spaced decking beneath wood shingles or shakes?

Back 66

Allows the underside of shingle to breath and dry.

Front 67

What type of underlay must be used under wood shingles?

Back 67

Wood shakes must have a breather type underlayment not less than 450mm wide interlaid between each course of shakes.The bottom edge is positioned above the butt equal to the distance of double the length of the exposure.

Front 68

How far apart should individual wood shingles be apart?

Back 68

6-9 mm to allow for expansion.

Front 69

Roll roofing is typically applied to what type of roof surface?

Back 69

Typically lower sloped roofs. sheds or buildings that the roof is not visible. Installed very quickly.

Front 70

What is the primary function of a roof?

Back 70

Protect the building and contents.

Front 71

What is the nailing pattern on sheathing?

Back 71

Nail 150mm oc on the edge and 300mm oc on long cuts

Front 72

How is quality measured on shingles?

Back 72

Measured by life span of the shingle.

Front 73

What is nailing pattern for stucco mesh?

Back 73

150mm 6" vertically with 400 16" oc

100 mm 4" vertically with 600 24" oc

Front 74

How many coats in the application of acrylic stucco?

Back 74

2 coats Base coat and 2nd coat is reinforced with fibreglass.

Front 75

When fastening wood siding how far must the nail penetrate the framing?

Back 75

25mm 1 " min.

Front 76

How far below wood surface must the starter strip be installed to protect the wood surface?

Back 76

25mm 1 "