09/10/2012

True Sustainability Starts with the Roof

Look past green claims to find the most sustainable roofing system for your facility

By Richard L. Fricklas

 
  • 1-screw

    1-screw

    /Portals/1/images/OnlineImages/2012/0912/RN/B_RN_91212_screw.jpg

    Routine inspections and maintenance uncover situations that can lead to leaks and shorten the roof’s lifetime.

    1-screw
  • 2-repairmanual

    This guide can be a valuable resource and is produced jointly by the National Roofing Contractors Association (NRCA), the Single Ply Roofing Industry (SPRI), and the Asphalt Roofing Manufacturer’s As

    /Portals/1/images/OnlineImages/2012/0912/RN/B_RN_91212_repair_manual.jpg

    This guide can be a valuable resource and is produced jointly by the National Roofing Contractors Association (NRCA), the Single Ply Roofing Industry (SPRI), and the Asphalt Roofing Manufacturer’s Association (ARMA).

    This guide can be a valuable resource and is produced jointly by the National Roofing Contractors Association (NRCA), the Single Ply Roofing Industry (SPRI), and the Asphalt Roofing Manufacturer’s As
  • 3-ponding

    If your roof can’t shed water like it should, consider adding tapered insulation or additional roof drains the next time you re-cover.

    /Portals/1/images/OnlineImages/2012/0912/RN/B_RN_91212_ponding.jpg

    If your roof can’t shed water like it should, consider adding tapered insulation or additional roof drains the next time you re-cover.

    If your roof can’t shed water like it should, consider adding tapered insulation or additional roof drains the next time you re-cover.
  • 4-files

    Maintain a roofing file with all important literature and roof warranties. Don’t have one? There’s no time like the present to start.

    /Portals/1/images/OnlineImages/2012/0912/RN/B_RN_91212_files.jpg

    Maintain a roofing file with all important literature and roof warranties. Don’t have one? There’s no time like the present to start.

    Maintain a roofing file with all important literature and roof warranties. Don’t have one? There’s no time like the present to start.

For steep-sloped roofing systems, aesthetics plays a major role in roofing decisions such as whether to use tile, slate, painted metal, asphalt, or wood shingles or shakes. However, for commercial low-slope roofing, aesthetics is much less important than these more critical issues:

  • Keeping water out of the building
  • Prolonging roof life
  • Protecting roof warranties
  • Meeting building codes for fire, R-value, wind and drainage
  • Serving as a platform for rooftop equipment

In recent years, additional criteria such as reflectivity (albedo), emissivity, revised energy codes, and recyclability have gained more importance.

Roughly two-thirds of commercial roof activity today consists of re-covering or re-roofing existing buildings. While periodic inspection and routine maintenance are the best investment a building owner can make, far too often the roof is out of sight, out of mind (until it leaks, of course).

Below, learn how to reduce leak potential and prolong roof life through routine inspections and maintenance. Important resources on this subject include Corps of Engineers publications on its computerized ROOFER program and RoofPoint, the roofing rating system by the Center for Environmental Innovation in Roofing.

Forthcoming columns will look at roof coatings and liquid membranes as important parts of sustainability and address what, where, and when coatings should be used as part of an overall roof management program.

Keeping the Building Dry
Early in the life of a low-slope roof system, leakage is often a consequence of poor workmanship, damage by other trades, or poor detailing. Address this by engaging a roof consultant to provide and review specifications and details. Later on during the construction phase, use a full-time roof observer to provide quality assurance.

A relatively new document, Standard Practice for Quality Assurance Observation of Roof Construction and Repair (ASTM D7186), can go a long way towards a successful roof launch. Also look into seminars by RCI that lead to certification as a Registered Roof Consultant (RRC) or Registered Roof Observer (RRO). Both programs will help you get a roof project off to a good start. For your reference, you may also want to order a copy of the newly released NRCA Construction Details, a supplement to AutoCAD software that contains 573 customizable details from past NRCA roofing manuals.

Poor detailing, especially of roof flashings and counterflashings, is a major source of early leakage. Often new equipment is installed after the roof has been put in service. This lapse can also void a roof warranty if the installation is not approved by the warranty supplier.


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When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality.

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Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
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Visit our website today to learn about the design flexibility of a Morton building and the endless possibilities of partnering with our designBUILD team.


Wood construction is both cost and energy efficient. Check out Morton Buildings and our designBUILD team online today to discover all the benefits of post-frame construction.


When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality.

We Can Help You Reduce Energy by 30%

Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
CLICK HERE to find out how.

Add highly responsive multi-zone comfort to any building project, in any climate. Our CITY MULTI H2i R2- and Y-Series VRF systems give you flexibility to fit the needs of any building. Enjoy 100% heating capacity at 0°F outdoor ambient, and 85% heating capacity at -13°F outdoor ambient.  For more information, log on to www.mitsubishipro.com

 
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