User's Guide — 29
Roof Covering — No. of Shingles
You’re going to use 12 inch wide by
36 inch long asphalt (strip) shingles
with 5 inch weather exposure. How
many shingles are required for a 1745
square foot roof? (Note: Shingle expo-
sure area = Exposure x length, and
Number of Shingles = Roof area ÷
shingle exposure area.)
Keystroke Display
1. Find and save shingle exposure area
[On/C] [On/C]
0.
5 [Inch] [x] 36 [Inch] [=]
180 SQ IN
[M+]
180 SQ IN
2. Find Total Shingles Required
1745 [Sq] [Feet]
1745 SQ FT
[÷] [Rcl] [Rcl] [=]
1396
(shingles)
3. Add 10% for waste
[+] 10 [%]
1535.6
(1536 shingles)
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