Crankshaft Company manufactures equipment. Crankshaft s products range from simple automated machinery to complex systems containing numerous components. Unit selling prices range from $224,000 to $1,680,000 and are quoted inclusive of installation.
Roofing felt requires a minimum overlap of 4 inches between seams of felt and an overlap of 6 inches at roof valleys, peaks and intersections with flashing and fascia. Roofing felt must be attached to the decking with plasticap nails to resist wind damage.
Rolls of 30-pound roofing felt provide an excellent waterproofing membrane. A roll of 30-pound felt will cover approximately 200 square feet. Since a square of roofing is 100 square feet, a roof of 25 squares will require 12.5 rolls of 30-pound felt. (25 x 100 = 2,500 SF; 2,500 divided by 200 = 12.5 rolls.) Waterproof underlayment provides extra protection.