Modified Bitumen Blends the Old & the New

Modified bitumen puts a modern twist on an old roofing method. Made from asphalt and reinforced with either polyester or fiberglass, the sheets or plies overlap one another to form a water tight barrier suited for flat or low-slope roofs. The sheets are “modified” with polymers — either styrene butadiene styrene (SBS) or atactic polypropylene (APP) – to create rubber- or plastic-like qualities.

A close cousin to built-up roofs, modified bitumen systems offer a number of benefits, among them:

A Proven Track Record: First used in Europe, modified bitumen has been available in the U.S. since the 1970s, creating roofs that are durable and resistant to punctures and roof traffic. They are typically installed in various layers to protect from water, extreme temperatures and wind uplift, and can accommodate building movement.

Versatility: The sheets are available in different thicknesses. There are a broad range of application methods and a number of surfacing options, including “cool roof” coatings which are highly reflective to reduce building cooling costs. Modified bitumen also offers increased resistance to brittleness at cold temperatures and greater flow resistance at high temperatures.

Easily To Maintain: When the roof gets to the end of its usable life, coating the product can prolong its usefulness.

Warranties: Long-term warranties are available with many modified bitumen systems.

In business for almost three decades, ROOFCORP has relationships with only the best Manufacturer’s. Our associates are well trained, guaranteeing workmanship and quality that will last for years to come. Contact us today to learn how a modified bitumen roofing system can cover your roofing needs.

ROOFCORP OF WA, P.O. Box 69315, 3425 S 146th St., Seattle, WA., 98168
Phone: 206.439.9991 Fax: 206.439.9995
ROOFCORP OF CA, 2130 S Dupont Dr., Anaheim, CA., 92806
Phone: 714.210.5993 Fax: 714.940.9917