Table 10-2.  Summary of sizes, packing rules, and coverage for shakes.

 



20" Pack

 



18" Pack


Approximate coverage (in square feet) of one square based on the
following weather exposures:

   


  Length and thickness


Courses
per bundle


Bundles per square

 


Courses per bundle


Bundles
per square


5-1/2"


6-1/2"


7"


7-1/2"


8"


8-1/2"


10"


11-1/2"


13"


14"


15"


16"

Shipping
weight
per square (lb)

 

18" x 1/2 to 3/4"
  handsplit & resawn

10 / 10

4

 

9 / 9

5

55a

65

70

75b

80

85c

 

220

18" x 3/4 to 1-1/4"
  handsplit & resawn

8 / 8

B5

 

9 / 9

5

55a

65

70

75b

80

85c

 

250

24" x 3/8" handsplit

10 / 10

4

 

9 / 9

5

65

70

75a

80

85

100b

115c

 

225

24" x 1/2 to 3/4"
  handsplit & resawn

10 / 10

4

 

9 / 9

5

65

70

75a

80

85

100b

115c

 

280

24" x 3/4 to 1-1/4"
  handsplit & resawn

8 / 8

5

 

9 / 9

5

65

70

75a

80

85

100b

115c

 

350

32" x 3/4 to 1-1/4"
  handsplit & resawn

6 / 7

6

     

100a

115

130b

140

150c

 

450

24" x 1/2 to 5/8"
  tapersplita

10 / 10

4

 

9 / 9

5

65

70

75a

80

85

100b

115c

 

260

18" x 3/8"
  true-edge straight-split

14 straight

4

     

100

106

112d

120

18" x 3/8" straight-split

19 straight

5

     

65a

75

80

90

95

100c

 

200

24" x 3/8" straight-split

16 straight

5

     

65

70

75a

80

85

100

115c

 

260

15" starter-finish course

8 / 8
10 / 10

5
4

 

9 / 9

5

Use supplementary with shakes applied not over 10" weather exposure

225

 
 

Source: Red Cedar Single and Handsplit Shake Bureau.

Note: Shakes are packed in straight courses in frames that are either 18 or 20 inches wide, hence the term "pack."

aRecommended maximum weather exposure for 3-ply roof construction.

bRecommended maximum weather exposure for 2-ply roof construction.

cRecommended maximum weather exposure for single-coursed wall construction.

dRecommended maximum weather exposure for double-coursed wall construction.