0 to 2/12
One row of Polar Blox 2' on center staggered
perlin to perlin.
Figure: length of roof divided by two plus one for each side. |
3/12 to 6/12 Slope
One row of Polar Blox staggered perlin to perlin.
Figure: length of roof divided by two plus
one for each row required on each side. |
6/12 Slope and Up
One row of Polar Blox every 12' of roof 1' center in a straight row.
Figure: one for each foot of roof plus one for each row. |