The Metal for a Dormer calculator computes the metal roof materials for one or more roof dormers based on the dimensions.
INSTRUCTIONS: Choose units and enter the following:
Metal for a Roof Dormer (m): The calculator returns:
However, these can be automatically converted to compatible units via the pull-down menu.
ECONOMY: This calculator provides two numbers of panels. The first (nP+) is a high number with no reduction in the number of panels based on reusing panel leftovers for additional sections (see graphic). When smaller sections are cut out of a panel of maximum length, it is possible in many cases to use the residual (leftover) for another section. This maximum number assumes that a full panel will be used for each section and therefore provides the maximum number of metal panels needed. The second (nP-) number of panels is lower, because it assumes that cuts making the hip ends will produce leftover pieces that can also be used (see diagram).
An addition of the TO parameter (default of 3") s added to the following dimensions.
It's better to have too much and have to cut it, than not enough.
Roofing Geometry Calculators