Thermoplastic
olefins (TPOs) are a blend of thermoplastics and elastomers. The chemical
formulation consists of a thermoplastic base - polypropylene (PP) or
polyethylene (PE) - and an elastomeric base - the ethylene-propylene rubber
polymer of ethylene propylene diene terpolymer rubber (EPDM).
Thermoplastic olefins (TPOs) are a blend of
thermoplastics and elastomers. The chemical formulation consists of a
thermoplastic base - polypropylene (PP) or polyethylene (PE) - and an
elastomeric base - the ethylene-propylene rubber polymer of ethylene propylene
diene terpolymer rubber (EPDM).
With increasing regularity, construction
contracts are providing for the resolution of disputes through arbitration,
rather than litigation through the court system. For example, the American
Institute of Architects (AIA) 1987 and 1997 contracts contain a provision which
requires arbitration through the American Arbitration Association (AAA).
For several years, a trend toward energy-efficient roof technology has been emerging in design and construction circles. Cool roofing evolved as a means to help keep buildings cooler and make them more energy efficient.
In ever-increasing numbers, singlefamily and multi-family homeowners are demanding construction products and services that add value and longevity to their homes in an environmentally acceptable, ecologically friendly manner. Today, this
The recent increase in storm frequency and the number of high-velocity wind events throughout the United States is prompting changes in the roofing industry. (Photo courtesy of GAF-ELK.) Mistake: Improper
The roof system assembly is comprised of a series of materials that have to interact with other building components. This interaction of different materials and separate components increases the probability
Mean GreenWell, it’s official. The “green” concept is everywhere. From household cleaners to cars, appliances to water bottles. There’s no denying it. But it’s fundamentally good and that’s a great
The most critical point of the roof assembly is the roof edge. This juncture is the most susceptible to wind uplift failures and moisture infiltration. The majority of roof damage created by high-velocity winds is initiated at the perimeter or corners of the building and infiltrates throughout the field of the system.
In a career in which she broke through as many barriers as she waterproofed, Dorothy Lawrence can deservedly be called, “The First Lady of Roofing and Waterproofing.” Her résumé is loaded with technological and material advancements that are still in use today.
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