` = "Dormer Roof Surface Area"`

Enter a value for all fields

The Surface Area for Roof Dormers calculator computes the roofing surface area for dormers based on the dimensions and number of dormers.

INSTRUCTIONS: Choose units and enter the following:

• (DD) Dormer Depth
• (DW) Dormer Width
• (P₂) Pitch of Dormer Gable (choose pitch from list)
• (P₁) Pitch of Main Roof (choose pitch from list)
• (n) Number of Dormers

Dormer Roof Surface Area (TA): The calculator returns the total surface area in square feet.  However, this can be automatically converted to compatible units via the pull-down menu..

The Math / Science

Dormers can be small or large, but if they conform to the basic shapes below, the math still works.

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