How do you identify a modified bitumen?
Try looking at the material edges: modified bitumen roofing is thicker, and its edges are sealed by heating with a torch – you should see a little runout of melted bitumen at the material seams.
What is the difference between APP and SBS roofing?
Atactic polypropylene (APP) is a plastic which when used with asphalt, gives what’s commonly called ‘plastic asphalt’. On the other hand, styrene-butadiene-styrene (SBS) is a synthetic rubber, creating the ‘elastic asphalt’.
What is modified bitumen SBS?
What is SBS modified bitumen roofing? SBS is a thermo plastic elastomer that has an excellent abrasion resistance and aging stability when blended with bitumen, making it the perfect bitumen modifier to achieve cold flexibility and elastic properties.
What is the difference between EPDM and modified bitumen?
Both EPDM & Modified Bitumen offer benefits to the flat roofing industry. Modbit tends to be less expensive and offer more aesthetically appealing options, while EPDM is more environmentally friendly, easier to install, and tends to have a longer life cycle when installed correctly.
How thick is modified bitumen?
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. A typical sheet of modified bitumen roofing weighs about 1.1 lbs. per square foot.
Is it possible to tell the difference between a rolled roof and a modified bitumen roof just by looking at them?
Probably the easiest way to tell just by looking is the seams, the asphalt rolled roofing will have plastic roof cement in the seams, the mod bit will have melted tar squeezing out of the seams.
How long does modified bitumen last?
20 years
Modified bitumen roofing is a long-lasting material with an average life span of 20 years. But since it’s a low-maintenance roofing system, it can last even longer with just basic care and maintenance.
What does SBS roofing stand for?
styrene butadiene styrene
With SBS roofing, the asphalt is modified to form a polymer network inside the bitumen. SBS stands for styrene butadiene styrene and gives the bitumen a rubber-like characteristic. This results in better resistance to aging and weathering.
What goes under modified bitumen?
A modified bitumen roof generally consists of two layers: a base sheet and a cap sheet. The base sheet is often self-adhered to the roofing substrate. The cap sheet is either torched down, cold adhered, or self-adhered (Modified bitumen can also be applied in hot asphalt).
Is TPO better than modified bitumen?
In general, a TPO roof is an excellent investment, considering the numerous advantages over a modified bitumen roof. The tough, tear-resistant single-ply membrane resists chemical spills, oil and grease. TPO roof systems are also UV-resistant to resist cracking and other sun damage, and fully recyclable.
Is modified bitumen good?
Modified Bitumen Roofing Systems are designed to withstand harsh exposure to extreme environmental elements. With five layers of protection, it’s one of the most trusted flat roofing systems used in the industry today.
