HOW TO MEASURE FOR A METAL ROOF
1. Make a sketch of your roof, complete with the roof measurements (see example below).
2. Break into rectangles and triangles (see example below).
3. Figure the materials required to complete your new roof.
SHINGLES, TILES OR SHAKE | |||
 Rectangles: Multiply the length by the height to find the square footage of each rectangle. |  Triangles: Multiply the length by the height, then divide by 2 to find the square footage of each triangular section | ||
| Add the square footage for all sections and add them together. Add approximately 10% for waste. | |||
TRIM | |||
| Add up the total footage of each type of trim: ridge, gable, eave, valley, transition, endwall, sidewall, etc and put like this: | Ridge – 88 feet Gable – 124 feet Eave – 132 feet Valley – 44 feet Endwall – 12 feet | ||
| It is recommended that you add about 10% to each trim quantity for waste, trim laps, etc. | |||
PANES | |||
Rectangles: Divide the width of each section by the width of the panel you are using to get the number of panels. specify the panel lengths, to the half-inch. In this example, for a 3′ wide panel you would need 6 pieces at 18′-6″ long for the section. | Triangles: Measure each panel getting shorter every X length across (replace X with the width of your panel). There will be one panel of each length for each triangle. If you don’t mind a little waste, divide the width (10′ in this case_ by the width of the panel you are using to get the number of panels. The length is as needed. For the above example, for a 3′ wide panel you would need 4 pieces at 18′-6″ long for this section.
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| Make a list showing the quantity needed for each length. We recommend that you add 2 panels to the longest length. | |||
TRIM | |||
| Add up the total footage of each type of trim: ridge, gable, eave, valley, transition, endwall, sidewall, etc and put like this: | Ridge – 88 feet Gable – 124 feet Eave – 132 feet Valley – 44 feet Endwall – 12 feet | ||
| It is recommended that you add about 10% to each trim quantity for waste, trim laps, etc. | |||