Individual sheets of modified bitumen are typically between 120 mils (3.05 mm or 0.12 inches) and 180 mils (4.6 mm or 0.18 inches) thick.
2 ply modified bitumen roofing weight.
Two of the most common commercial flat roof systems found in the northeast are modified bitumen and thermoplastic polyolefin (tpo).
The formulation of the bitumen is critical, particularly when its physical properties are modified by the addition of polymers.
Pounds per 100 sq ft or 170 to 250 grams per square meter.
.3 spread additional stone ballast around perimeter of roof for width of 1200 mm to increase ballast weight to [100] [___] kg/m 2.
To two.5 pounds per 100 sq ft or around 50 to 125 grams per square meter.
The abs plastic mats range in weight from 1.
Modified bitumen 2 pounds per sf.
Modified bitumen roofing has been around since the 1970s when it was developed to address ongoing issues with traditional asphalt roofs, while tpo roofs began rising to popularity in the 1990s.
Polyester supports range in weight from three.5 to five.
Length, 1,100 lbs./m sq.ft., 1,950 lbs./m sq.ft.
Nominal weight & 500 psi compression.
The manufacturer must ensure that a suitable degree of compatibility exists between the bitumen and the polymer and that a thorough mix has been.
Bitumen is most commonly modified with styrene butadiene styrene (sbs).
Mechanically fastened single ply 0.5 pounds per sf
Wall zones 4 and 5 and their relationship with roof perimeters.
.1 materials and installation for two ply sbs modified bituminous membranes in a protected membrane waterproofing system.
Specifications of modified bitumen roofing include 1/4 in., 1/2 in.
The vast majority of installed mod bit roof membranes have two plies, a base sheet and a cap sheet.