X is defined as "the amount of cedar shingle visible in the other rows". Measure w tape measure.
the path forward is pretty simple: complete one row, then measure up on the roof from top of row n by X inches, snap chalkline
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.