Instructions / Assembly

8
ESTIMATING & ORDERING A ROOF (cont.)
Start with section A. The eave length is 40’ and the ridge length is 30’, with a difference of 10’. You will need 30 ÷ 3 = 10
pcs. X 10’ to reach the area where the valley starts. Remember that you have 10’ remaining to cover the area. Calculate
the length of each panel going into the valley by first determining the roof’s pitch. Pitch is how much rise your roof has in
inches for every foot of horizontal run. Use the Hip and Valley Chart below to ensure you order the correct panel length
for hips and valleys. For example, Diagram 1A is a 4/12 pitch (4/12p). According to the chart below, we know each panel
will be 36
1
/
8
” shorter. Since we are measuring from the longest point of the angle, your first piece will be the same length
as the full eave to ridge measurement and each piece after will be 36
1
/
8
” shorter. (Your list of Section A should look like
Sample D below.)
Hip & Valley Chart
When determining the panel length needed for a hip or valley, the panel will either be shorter or longer as you go up or
down the hip or valley. The chart below shows you the amount to add or subtract from each panel according to the pitch
of your roof, for hips and valleys where the intersecting roof planes are at 90º to another, as in diagram 1A.
1/12p = 36
1
/
8
” 5/12p = 39” 9/12p = 45”
2/12p = 36½” 6/12p = 40¼” 10/12p = 46
7
/
8
”
3/12p = 37” 7/12p = 41
11
/
16
” 11/12p = 48
13
/
16
”
4/12p = 37
15
/
16
” 8/12p = 43¼” 12/12p = 50
15
/
16
”
Note: When determining panel lengths, always round up to the next full inch.
SAMPLE D
Section A 11 pcs. X 10’
1 pc. X 7’
1 pc. X 4’
1 pc. X 1’
Refer to the Home Legend on page 15 for trim placement. From this diagram, you can determine the names and
placement of the trim needed. All trim is produced in 10’6” sections only. Remember to allow 6” of overlap on all trims.
Use the estimating section to determine trim quantities.
For applications of the trim flashings, see pages 16-23.
Step 3 (Cont.)
Step 3