The Rafter Boards Needed for a One-sided Roof calculator computes the number of rafter boards for a single side of a gabled or flat roof based on the width of the roof and the on-center spacing of the rafters.
INSTRUCTIONS: Choose your preferred units and enter the following:
Rafter Boards: The calculator returns the number of rafter boards for the one-sided roof.
The default spacing is 16" as the default, but the user can enter a different spacing if desired.
To compute the rafter boards for a two sided roof, CLICK HERE.