Gables
The
width of the house is 28 ft. + 1 ft.
overhang at each corner  that makes the
bottom base of the gable triangle 30 ft.
THE
FORMULA FOR FINDING
THE AREA OF A TRIANGLE
BASE
X HEIGHT
2
A
Gable is a triangle. Because of the
angles of each piece of siding to be cut,
there is more waste.
6
ft. high X 30 ft. wide = 180 sq. ft.
that would be the area for a square or rectangle.
The
gable is a triangle, therefore we will divide by
2 to find the area of a triangle.
180
sq ft divided by 2 = 90 ft for the area
in each gable ( before waste ).
Here's
the popular
method for calculating waste.
Figure
1/3 more for waste
90 ft. x .33 = 30 ft.
90' + 30' = 120' X 2 (2 gables) = 240 sq. ft
of siding to be used in the gables.

Calculations
Walls
Length
of wall x height = area
In
this case all walls are the same height,
therefore we simply add them:
60 + 60 + 28 + 28 = 176 linear ft.
For
a complex (typical house) measure each wall and
add them together for wall total. Measure each
wall height X width.
Wall
Height
The
wall height is 99 inches. The calculation will be
different for different panels.
If
you are using an 8" (double 4") you
first
determine how many 8" panels are required
to cover the 99 inch height. 99 inches
divided by 8 inches = 12.37 panels.
Since this figure is more than 12 (panels)
you must go to 13 panels.
This requires 13 (8") panels.
13 panels X 8" = 104 inches.
Now let's find the footage.
104" divided by 12" (1 ft.) = 8.66 wall
height.
176'
X 8.66 feet = 1524 sq. feet
of
siding to cover the walls using an 8" panel.
If
you are using a 10" (double 5) panel:
99" divided by 10" = 9.9 panels, you go
to
10 panels, therefore 10 panels X 10" is
100".
100" divided by 12" (1 foot) = 8.33
feet.
176'
X 8.33 feet = 1466 sq. feet
of siding
to cover the walls using a 10" panel.
The
other side of the coin ..
Let's
say the wall height is 96 inches ..
96"
wall height
8" panel
This
would require exactly 12 (8") panels with
virtually no vertical
waste when using an 8" panel.
Do
not let the "waste factor" influence
your selection of a siding panel,
it's not that significant.
