Building Green Guide
LEED was founded in 1993 and promotes the concept of designing buildings where all of the components of the roof, wall, windows, lighting, and HVAC work together to optimize performance attributes of one each system. Typical cost increase for LEED projects is between 2% and 8%.
This section gives an overview of the various ways that a roofing system contributes to achievement of specific LEED credit.
United States Green Building Council (USGBC) was formed to administer LEED.
- Formed in 1993
- Mission: The USGBC is the nation’s foremost coalition of leaders from across the building industry working to promote buildings that are environmentally responsible, profitable, and healthy places to live and work.
- The LEED program for new construction went into pilot testing in 1998.
- The cost impact for LEED averages 2% increases with a range of 1.5% to 8%.
- LEED design is now 5% of the present new construction market, half of which federal and institutional buildings. Rapid growth is occurring in the commercial market as well.
This section gives a brief overview of the standard and a detailed look at how roofing systems contribute to the attainment of specific credits.
NC – New Construction. There a 6 categories for the LEED program.
|17||Energy & Atmosphere||EA|
|15||Indoor Environmental Quality||EQ|
|13||Materials & Resources||MR|
|5||Innovation & Design Process||ID|
Total Points Possible
For basic certification
Standard Controls – Documentation needed on each credit that is signed by the architect
Standard – LEED-NC for new construction
LEED & ROOFING
Roofing materials are associated with 9 factors, which are:
- Storm water management
- Heat island effect: Roofing
- Optimized energy performance
- Construction waste management
- Resource reuse
- Recycle content
- Regional materials
- Ozone protection
- Low-emitting materials
MBTechnology roofing system qualifies for the following two (2) factors that give credit points
Material resource (MR) Credit 5
- MR Credit 5.1 Regional Materials: 20% manufactured –1pt
Use material manufactured within 500-mile radius of building site to save on transportation cost
Manufacturing locations for MBTechnology products is 500 miles to all locations in California, Las Vegas and Reno.
Sustainable Site (SS) Credit 7
- Sustainable Sites (SS) Credit 7.2 Heat island effects: Roofing – 1pt
- Cool Roof
- Energy Star-listed product
- Emissivity > 0.9 per test method ASTM E 408
- “Cool Roof” must be minimum of 75% of the roof area
- Cool Roof
Fireguard SBS series roofing system coated with our elastomeric coating meets this requirement.
Other possible ways to earn LEED credit associated with roofing systems are:
Materials & Resources (MR) Credit 3
- MR Credit 3.1 Resource Reuse: 5% -1pt
- MR Credit 3.2 Resource Reuse: 10% -2pt
Reuse building materials and products to reduce demand for virgin materials and to reduce waste.
- There are cases where one could leave the old roof in place and roof over it, provided the old roof is not leaking and does not have trapped moisture. The warranty will be limited to 10 years. In this case, one uses a protection board, which is mechanically fastened over the roof, and the new roof is then installed over the protection board.
Contact MBTechnology so we can inspect the project to determine if it is suitable for such application.
Materials & Resources (MR) Credit 4
- MR Credit 4.1 Recycle Content: 5% – 1pt
- MR Credit 4.2 Recycle Content: 10% – 2pt
Recycle material content of all the materials used in the project shall account for a minimum of 5% or 10% of the total materials used.
- By using a polyisocyanurate insulation: 16–43% post-industrial based on thickness (Note: check with manufacturer.)