Roof System

Question 1

How can a roof be built to increase the life of asphalt shingles significantly?

Answer 1

• Lighter colored shingles
• Steep pitch
• North facing

Question 2

What is one of the biggest problems with slate roofs?

Answer 2

Fasteners deteriorate and the slates fall out of place.

Question 3

Slate can last up to ____ years.

Answer 3

175 years.

Question 4

What methods are used to secure concrete roof tiles?

Answer 4

• battens
• nails
• mortar
• hurricaine clips

Question 5

What methods are used to secure clay roof tiles?

Answer 5

• wire ties
• tile locks (+ mortar for additional bonding)
• battens
• nails (+ wood nailing strip)

Question 6

How is roll roofing secured together?

Answer 6

Nail to roof with layers cemented together with cement bead at bottom edge of each layer.

Question 7

What is considered a ponding roof?

Answer 7

Any roof that still has water on it after 48 hours.

Question 8

What are 2 main types of single ply membrane roofing?

Answer 8

1) EPDM (Black or White)
2) TPO (Usually white)

Question 9

What can cause blistering and bubbling in built-up roofing?

Answer 9

Moisture trapped between the layers.

Question 10

What does a built-up asphalt roof system consist of?

Answer 10

Alternate layers of roofing felts and hot asphalt:

• Base sheet and 2-3 layers of ply sheet.
• Flood coat of hot asphalt
• Gravel or fibreglass mineral surface cap sheet
  (provides ultraviolet protection and provides fire rating)

Question 11

What types of metal roofs should not be painted?

Answer 11

• Copper
• Pre-coated
• Pre-painted

Question 12

What characterizes an open valley in a roof?

Answer 12

• Metal flashing
• 4”-6” wide at top at widens out 1/8” per foot

Question 13

What characterizes an closed-cut (half-woven) valley in a roof?

Answer 13

• Roll roofing or felt underneath
• Corners of shingles at steep and/or larger roof are cut
  (cut back 2” from centerline)
• • Uncut shingles extend 12” past centerline and aren’t nailed within 6” of centerline
• Shingles in valley area glued with 3” wide band of cement

Question 14

What characterizes an fully woven closed valley in a roof?

Answer 14

• Roll roofing or felt underneath
• Shingles are overlapped (not cut)
• • Uncut shingles extend 12” past centerline and aren’t nailed within 6” of centerline
• Shingles in valley area glued with 3” wide band of cement

Question 15

Eave protection should extend how far up the roof?

Answer 15

36 inches minimum.

Question 16

What is a square?

Answer 16

A unit of roof measuring covering 100 square feet.

Question 17

How low of a pitch can asphalt composition shingle can be installed on a roof using normal installation techniques?

Answer 17

4 in 12 pitch.

Question 18

What is used when installing wood shingle roofing?

Answer 18

Spaced plank sheathing OR wood battens.
(continuous decking at eaves for first 3 or 4 courses)

Question 19

What is used when installing wood shake roofing?

Answer 19

Felt interlay over top of each course.