ESTIMATING & ORDERING A ROOF
Step 2
SAMPLE “B”
Section A—13 pcs. X 12’
Now look at your roof diagram and figure out your next section of roof. Refer back to Diagram “A”. Section B
of this sample roof is the same as Section A. Your materials list should now look like Sample “C” below.
SAMPLE “C”
Section A—13 pcs. X 12’
Section B—13 pcs. X 12’
If your home has hips or valleys, refer to Diagram “1A” below.
DIAGRAM “1A”
10'
10'
40'
30'
20'
EAVE
Section B
RIDGE
Section A
EAVE
GABLE
GABLE
EAVE
RIDGE
EAVE
GABLE
GABLE
VALLEY
HIP
90°
Start with section A. The eave length is 40’ and the ridge length is 30’, with a difference of 10’. You will need
30÷2=15 pcs. x 10’ to reach the area where the hip starts. Remember that you have 10’ remaining to cover the
area, or 5 more panels. 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 25 ¼” 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 25 ¼” shorter. (Your list of Section A should look like Sample “D”.)
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 one
another, as in diagram 1A.
1/12p = 24”
5/12p = 26”
9/12p = 30”
2/12p = 24
5
/
16
”
6/12p = 26
13
/
16
”
10/12p = 31¼”
3/12p = 24¾”
7/12p = 27¾”
11/12p = 32½”
4/12p = 25¼”
8/12p = 28
13
/
16
”
12/12p = 33
15
/
16
”
Note: When determining panel lengths, always round up to the next full inch.
SAMPLE “D”
Section A
16 pcs. X 10’
1 pc. X 7’- 11”
1 pc. X 5’- 10”
1 pc. X 3’- 9”
1 pc. X 2’
Summary of Contents for 5V Crimp
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