Archive for the ‘Uncategorized’ Category

EPDM Roofing Systems Are An Energy Efficient Option

December 23, 2010

Commercial EPDM Single – Ply Roofing System Part 4

Longevity Pays

Other important aspects of designing an energy-efficient roofing system are product durability and the role of life cycle assessment (LCA), which evaluates the environmental impact of a product throughout its life cycle. Although the USGBC has incorporated LCA of building materials in its LEED rating system, some industry experts believe there is an overemphasis on environmental benefits without equal concern for durability.

In a white paper titled “Life Cycle Assessment and the LEED Green Building Rating System,” Dr. James L. Hoff, DBA, research director for the Center for Environmental Innovation in Roofing, explained, “É no building product should be considered truly sustainable unless it also meets or exceeds the desired durability of the building itself.”

In terms of roofing, the primary concern with LEED is the insufficient emphasis on durability. For example, a project can achieve one LEED point for painting the building’s roof with a reflective coating, some of which may last less than five years. However, no credit is afforded for selecting a high-performance, non-reflective roofing system that may be designed and warranted to last 30 years or more.

Life cycle costs of EPDM membranes are lower than those of other popular low-slope roofing systems. EPDM membrane durability has also led to long life expectancy ratings, including more than 23 years in covered applications, more than 26 years in exposed applications and an estimate of more than 50 years for ultimate service life.

In the face of challenging economic times, choosing roofing materials that can help reduce overall energy costs involves looking beyond surface color. For more than 40 years, architects, roof consultants and contractors have relied on EPDM’s weatherability, durability and other long-term performance attributes. Today, the environmental benefits of EPDM play an equally significant role in determining what roofing system is best suited for an individual building.

Talk to a Minnesota commercial roofing contractor to find out if an EPDM roof system is the right choice for your building.


Part 2 of Selecting Your Asphalt Shingles

September 21, 2010

Selecting Your Asphalt Shingles For Minnesota Homeowners

It is useful to look at the anatomy of an asphalt shingle to understand how the different components work together, and to see how asphalt shingles are designed to protect your home.  The life expectancy of asphalt shingles is based on the performance of three components, and their ability to resist weathering.  Made from petroleum, asphalt contains oils that make asphalt shingles easy to work with and effective at protecting your roof and home.  As time goes on, these oils come to the surface and are weathered away by the elements.  This weathering process ages a shingle.

Roofing shingles

The Anatomy of an Asphalt Shingle

  • Reinforcement: Asphalt shingles start out with an asphalt-coated fiberglass mat.  This reinforcement is the structural base of the shingle, to which the other raw materials (asphalt and granules) are applied.  In order for asphalt shingles to provide protection, the reinforcement must resist tearing, warping and shrinkage when applied on stable, well-ventilated decks.
  • Asphalt: During shingle manufacturing, the reinforcement is coated with asphalt to provide the water-resistant layer that protects your roof from the elements.  The thickness of this layer of asphalt determines the weight of the shingle.  Many believe that the heavier the shingle the greater the protection offered to your roof and home.  This factor is only one of many that determines the life expectancy of your roof.
  • Granules: A layer of granules is pressed into the surface of the asphalt.  The granules protect the layer of asphalt from the ultraviolet radiation from the sun.  Without this layer of protection, the asphalt layer would quickly deteriorate.

If your home or complex has suffered roof top hail damage or you are considering reroofing your home, please contact a Minnesota roofing contractor today.