LEED® Support: Leadership in Energy & Environmental Design
Leadership in Energy & Environmental Design “LEED® ” was created to:
- Define “green building” by establishing a common standard of measurement
- Promote integrated, whole-building design practices
- Recognize environmental leadership in the building industry
- Stimulate green competition
- Raise consumer awareness of green building benefits
- Transform the building market
Metl-Span insulated metal wall & roof panels help contribute to accumulation of LEED® points for project certification in the following areas:
- Sustainable Sites
- Credit 7.2-Heat Island Effect: Roof
Roofing materials with a Solar Reflectance Index (SRI) greater than or equal to 78 for low-sloped roof applications and 29 for steep-sloped roof applications, used on at least 75% of the roof’s surface, will qualify for this credit. Metl-Span CFR Roof Panels coated in over fifteen color choices for steep-sloped roof and one color for low-sloped roof applications meet or exceed the SRI requirements to claim one point in SS Credit 7.2.
- Energy & Atmosphere
- Prerequisite 2-Minimum Energy Performance (REQUIRED)
Metl-Span CF Insulated Metal Panels will contribute to higher energy efficiency of a building that must comply with a 10% improvement in the performance compared to a benchmark rating based on ASHRAE/IESNA Standard 90.1-2007 (with errata but without addenda) in EA Prerequisite 2.
- Credit 1-Optimize Energy Performance
Metl-Span CF Insulated Metal Panels have been independently tested using the ASTM C 1363 Hot Box method for thermal transmittance. The results meet or surpass the minimums outlined in the ASHRAE/IESNA Standard 90.1-2007. Using Metl-Span CF Insulated Metal Panels will considerably contribute to points for the building demonstrating a percentage improvement in the proposed building performance rating compared to the baseline performance rating by a whole building project simulation in EA Credit 1.
- Materials & Resources
- Credit 1.1-Building Reuse: Maintain Existing Walls, Floors & Roof
Metl-Span CF Insulatd Metal Wall Panels and/or ThermalSafe® Fire-Resistant Panels used in an existing building’s envelope or structure can be disassembled, moved and reused for the envelope/structure of a new project, contributing to points for maintaining at least 55% of the surface area of existing building structure and envelope in MR Credit 1.1.
- Credit 1.2-Building Reuse: Maintain Interior Non-Structural Elements
Metl-Span CF Insulated Metal Panels and/or ThermalSafe® Fire-Resistant Panels used in a building’s interior can be disassembled, moved and reused for the interior of a new project, contributing to points for using existing interior non-structural elements in at least 50% (by area) of the completed building in MR Credit 1.2.
- Credit 3-Materials Reuse
Metl-San CF Insulated Metal Panels, both interior and exterior, can be disassembled, moved and reused for a new project, contributing to points for using salvaged, refurbished or reused materials such that the sum of these materials constitute at least 5%, based on cost, of the total value of materials on the project in MR Credit 3.
- Credit 4-Recycled Content
Steel faces on Metl-Span insulated metal wall panels, ThermalSafe fire-resistant panels and CFR
roof panels contain a total recycled content of 34.2%. Of this, post-consumer recycled content is
equal to 19.8% and pre-consumer recycled content is equal to 14.4%. The polyurethane foam core
has a pre-consumer recycled content of 7.32% and 0% post-consumer; while the mineral wool core
contains 40% pre-consumer and 0% post-consumer recycled content. For Metl-Span’s single-skin
wall panels, the steel contains an average post-consumer recycled content of 25.5% and an average
pre-consumer recycled content of 6.8%. These percentages of recycled content contribute to using
materials with recycled content such that the sum of post-consumer recycled content plus one-half
of the pre-consumer content constitutes at least 10% (based on cost) of the total value of the
materials in the project in MR Credit 4.
- Credit 6-Rapidly Renewable Materials
The foam core in Metl-Span CF Insulated Metal Wall Panels and CFR Roof Panels contains a component that contributes to one point for using rapidy renewable building materials and products (made from plants that are typically harvested within a ten-year cycle or shorter) for 2.5% of the total value of all building materials and products used in the project, based on cost, in MR Credit 6.
- Indoor Environmental Quality
- Credit 4.1-Low Emitting Materials: Adhesives and Sealants
All adhesives and sealants must comply with the standards of the South Coast Air Quality Managment District, Rule #1168. For architectural sealants, the VOC maximum limit is 250 grams/liter. The sealants supplied with Metl-Span CF Insulated Metal Wall Panels, ThermalSafe® Fire-Resistant Panels and CFR Roof Panels have VOC contents below the maximum limit, contributing to one point for all adhesives and sealants used on the interior of the building complying with stated standards in IEQ Credit 4.1.
- Credits 8.1-Daylight & Views-Daylight
The use of the fully integrated Metl-Vision Window System with horizontal Metl-Span CF Insulated Metal Wall Panels can significantly contribute to points for demonstrating that a minimum daylight illumination level of 25 footcandles has been achieved in a minimum of 75% of the regularly occupied area in IEQ Credit 8.1.
- Water Efficiency
- Credit 1-Water Efficient Landscaping
Metl-Span CFR Insulated Metal Roof Panels integrated into a building’s rainwater harvesting system can contribute to a point for reducing potable water consumption for irrigation by 50% from a calculated mid-summer baseline case or using captured rainwater for non-potable uses for irrigation in WE Credit 1.
- Credit 2-Innovative Wastewater Technologies
Metl-Span CFR Insulated Metal Roof Panels, integrated into a building’s rainwater harvesting system, can help to reduce potable water used for building sewage conveyance by 50% as described in WE Credit 2.
- Credit 3-Water Use Reduction
Metl-Span CFR Insulated Metal Roof Panels integrated into a buildng’s rainwater harvesting system can contribute to points for employing a strategy that in aggregate uses at least 20% less water than the water use baseline calculated for the building (not including irrigation) after meeting the Energy Policy Act of 1992 fixture performance requirements in WE Credit 3.
Innovation In Design
Credits 1- Innovation in Design
Metl-Span CF Insulated Metal Wall Panels, ThermalSafe® Fire-Resistant Panels, CFR Roof Panels and/or the Metl-Vision™ Window System integrated into a building’s overall design can contribute to points if the building’s design team applies strategies or measures that demonstrate performance above the requirements in categories and/or innovative performance not specifically addressed by LEED® in ID Credit 1.