LEED v4 Certification Guideline

The Leadership in Energy and Environmental Design (LEED) Green Building Rating Systemtm upgraded to a more rigorous version (v4) with increased emphasis on product transparency and whole-building life cycle analysis. With this update, we’ve developed a new LEED v4 Certification Guideline to deliver the most up-to-date performance information on Kawneer products.

 

See how you can design sustainable buildings with Kawneer products using this new LEED v4 Certification Guideline.

 

ENERGY & ATMOSPHERE
Potential Points
LEED Requirements
Products
Optimize Energy Performance
Achieve increasing levels of energy performance above the prerequisite standard to reduce environmental impact associated with excessive energy use.
1-20
Select one of the options below.
(1-18)
(1-20 HC)
(1-16 Sch)
OPTION 1: WHOLE-BUILDING ENERGY SIMULATION
To be eligible for Option 1, projects must use Option 1 in EA Prerequisite Minimum Energy Performance. Analyze efficiency measures during the design process and account for the results in design decision making using energy simulation of efficiency opportunities, past energy simulation analyses for similar buildings, or published data (e.g., Advanced Energy Design Guides) from analyses for similar buildings. Analyze efficiency measures, focusing on load reduction and HVAC-related strategies (passive measures are acceptable) appropriate for the facility.
(1-6)
OPTION 2: PRESCRIPTIVE COMPLIANCE: ASHRAE ADVANCED ENERGY DESIGN GUIDE
To be eligible for Option 2, projects must use Option 2 in EA Prerequisite Minimum Energy Performance. Implement and document compliance with ASHRAE 50% Advanced Energy Design Guide and climate zone using the applicable recommendations and standards in Design Strategies and Recommendations by Climate Zone (Chapter 4). For projects outside the U.S., consult ASHRAE/ASHRAE/IESNA Standard 90.1-2010, Appendixes B and D, to determine the appropriate climate zone.
Renewable Energy Production
Reduce the environmental and economic harms associated with fossil fuel energy by increasing self-supply of renewable energy.
1-3
Use renewable energy systems to offset building energy costs by calculating the percentage of renewable energy with the following equation:
% renewable energy = Equivalent cost of usable energy produced by the renewable energy system / Total building annual energy cost
MATERIALS & RESOURCES
Potential Points
LEED Requirements
Products
Building Product Disclosure and Optimization - Environmental Product Declarations
Encourage the use of products and materials for which life-cycle information is available and that have environmentally, economically, and socially preferable life-cycle impacts and to reward project teams for selecting products from manufacturers who have verified improved environmental life-cycle impacts.
1-2
Achieve one or more of the options below, for a maximum of 2 points.
(1)
OPTION 1: ENVIRONMENTAL PRODUCT DECLARATION (EPD)
Use at least 20 different permanently installed products sourced from at least five different manufacturers that meet one of the disclosure criteria below.
  • Product-specific declaration of products with a publicly available, critically reviewed life-cycle assessment conforming to ISO 14044 that have at least a cradle to gate scope are valued as one quarter (1/4) of a product for the purposes of credit achievement calculation.
  • Environmental Product Declarations (Type III) which conform to ISO 14025, 14040, 14044, and EN 15804 or ISO 21930 and have at least a cradle to gate scope for either an Industry-wide (generic) EPD or a Product-specific EPD.
    • Industry-wide (generic) EPD are products with third-party certification (Type III), including external verification, in which the manufacturer is explicitly recognized as a participant by the program operator and are valued as one half (1/2) of a product for purposes of credit achievement calculation.
    • Product-specific EPD are products with third-party certification (Type III), including external verification in which the manufacturer is explicitly recognized as the participant by the program operator and are valued as one whole product for purposes of credit achievement calculation.
(1)
OPTION 2: MULTI-ATTRIBUTE OPTIMIZATION
Use products that demonstrate impact reduction below industry average in at least three of the categories below (third party certified) for 50%, by cost, of the total value of permanently installed products in the project. The categories include: global warming potential (greenhouse gases), depletion of the stratospheric ozone layer, acidification of land and water sources, eutrophication, formation of tropospheric ozone and depletion of nonrenewable energy resources.
Building Product Disclosure and Optimization - Sourcing of Raw Materials
Encourage the use of products and materials for which life cycle information is available and that have environmentally, economically, and socially preferable life cycle impacts. To reward project teams for selecting products verified to have been extracted or sourced in a responsible manner.
1-2
Achieve one or more of the options below, for a maximum of 2 points.
(1)
OPTION 1: RAW MATERIAL SOURCE AND EXTRACTION REPORTING
Use at least 20 different permanently installed products from at least five different manufacturers that have publicly released a report from their raw material suppliers which include raw material supplier extraction locations, a commitment to long-term ecologically responsible land use, a commitment to reducing environmental harms from extraction and/or manufacturing processes, and a commitment to meeting applicable standards or programs voluntarily that address responsible sourcing criteria.
  • Products sourced from manufacturers with self-declared reports are valued as one half (1/2) of a product for credit achievement.
  • Third-party verified corporate sustainability reports (CSR) which include environmental impacts of extraction operations and activities associated with the manufacturer’s product and the product’s supply chain, are valued as one whole product for credit achievement calculation. Acceptable CSR frameworks include the following:
    • Global Reporting Initiative (GRI) Sustainability Report
    • Organisation for Economic Co-operation and Development (OECD) Guidelines for Multinational Enterprises
    • U.N. Global Compact: Communication of Progress
    • ISO 26000: 2010 Guidance on Social Responsibility
(1)
OPTION 2: LEADERSHIP EXTRACTION PRACTICES
Use products that meet at least one of the responsible extraction criteria below for at least 25%, by cost, of the total value of permanently installed building products in the project.
  • Extended producer responsibility. Products purchased from a manufacturer (producer) that participates in an extended producer responsibility program or is directly responsible for extended producer responsibility. Products meeting extended producer responsibility criteria are valued at 50% of their cost for the purposes of credit achievement calculation.
  • Bio-based materials. Bio-based products must meet the Sustainable Agriculture Network’s Sustainable Agriculture Standard. Bio-based raw materials must be tested using ASTM Test Method D6866 and be legally harvested, as defined by the exporting and receiving country. Products meeting bio-based materials criteria are valued at 100% of their cost for the purposes of credit achievement calculation.
  • Materials reuse. Reuse includes salvaged, refurbished, or reused products. Products meeting materials reuse criteria are valued at 100% of their cost for the purposes of credit achievement calculation.
  • Recycled content. Recycled content is the sum of postconsumer recycled content plus one-half the preconsumer recycled content, based on cost. Products meeting recycled content criteria are valued at 100% of their cost for the purposes of credit achievement calculation.
Building Product Disclosure and Optimization - Material Ingredients
Encourage the use of products and materials for which life-cycle information is available and that have environmentally, economically, and socially preferable life-cycle impacts. To reward project teams for selecting products for which the chemical ingredients in the product are inventoried using an accepted methodology and for selecting products verified to minimize the use and generation of harmful substances. To reward raw material manufacturers who produce products verified to have improved life-cycle impacts.
1-2
Achieve one or more of the options below, for a maximum of 2 points.
(1)
OPTION 1: MATERIAL INGREDIENT REPORTING
Use at least 20 different permanently installed products from at least five different manufacturers that use any of the following programs to demonstrate the chemical inventory of the product to at least 0.1% (1000 ppm).
  • Manufacturer Inventory. The manufacturer has published complete content inventory for the product following these guidelines:
    • A publicly available inventory of all ingredients identified by name and Chemical Abstract Service Registration Number (CASRN)
    • Materials defined as trade secret or intellectual property may withhold the name and/or CASRN but must disclose role, amount and GreenScreen benchmark, as defined in GreenScreen v1.2.
  • Health Product Declaration. The end use product has a published, complete Health Product Declaration with full disclosure of known hazards in compliance with the Health Product Declaration open Standard.
  • Cradle to Cradle. The end use product has been certified at the Cradle to Cradle v2 Basic level or Cradle to Cradle v3 Bronze level.
(1)
OPTION 2: MATERIAL INGREDIENT OPTIMIZATION
Use products that document their material ingredient optimization using the paths below for at least 25%, by cost, of the total value of permanently installed products in the project.
  • GreenScreen v1.2 Benchmark. Products that have fully inventoried chemical ingredients to 100 ppm that have no Benchmark 1 hazards:
    • If any ingredients are assessed with the GreenScreen List Translator, value these products at 100% of cost.
    • If all ingredients are have undergone a full GreenScreen Assessment, value these products at 150% of cost.
  • Cradle to Cradle Certified. End use products are certified Cradle to Cradle. Products will be valued as follows:
    • Cradle to Cradle v2 Gold: 100% of cost
    • Cradle to Cradle v2 Platinum: 150% of cost
    • Cradle to Cradle v3 Silver: 100% of cost
    • Cradle to Cradle v3 Gold or Platinum: 150% of cost
  • International Alternative Compliance Path – REACH Optimization. End use products and materials that do not contain substances that meet REACH criteria for substances of very high concern. If the product contains no ingredients listed on the REACH Authorization or Candidate list, value at 100% of cost.
(1)
OPTION 3: PRODUCT MANUFACTURER SUPPLY CHAIN OPTIMIZATION
Use building products for at least 25%, by cost, of the total value of permanently installed products in the project that:
  • Are sourced from product manufacturers who engage in validated and robust safety, health, hazard, and risk programs which at a minimum document at least 99% (by weight) of the ingredients used to make the building product or building material, and
  • Are sourced from product manufacturers with independent third party verification of their supply chain that at a minimum verifies:
    • Processes are in place to communicate and transparently prioritize chemical ingredients along the supply chain according to available hazard, exposure and use information to identify those that require more detailed evaluation
    • Processes are in place to identify, document, and communicate information on health, safety and environmental characteristics of chemical ingredients
    • Processes are in place to implement measures to manage the health, safety and environmental hazard and risk of chemical ingredients
    • Processes are in place to optimize health, safety and environmental impacts when designing and improving chemical ingredients
    • Processes are in place to communicate, receive and evaluate chemical ingredient safety and stewardship information along the supply chain
    • Safety and stewardship information about the chemical ingredients is publicly available from all points along the supply chain
PBT Source Reduction— Lead, Cadmium, and Copper
Reduce the release of persistent, bioaccumulative, and toxic (PBT) chemicals associated with the life cycle of building materials.
2
(HC only)
Specify that interior or exterior paints used do not contain lead or intentionally added cadmium.
Construction and Demolition Waste Management
Reduce the construction and demolition waste disposed of in landfills and incineration facilities by recovering, reusing, and recycling materials.
1-2
Select one of the options or paths below.
(1-2)
OPTION 1: DIVERSION
Path 1. Divert at least 50% of the total construction and demolition material and the diverted materials must include at least three material streams.
Path 2. Divert at least 75% of the total construction and demolition material and the diverted materials must include at least four material streams.
(2)
OPTION 2: REDUCTION OF TOTAL WASTE MATERIAL
Do not generate more than 2.5 pounds of construction waste per square foot (12.2 kilograms of waste per square meter) of the building’s floor area. Consider using design strategies such as prefabrication, modular construction, and designs that use industry standard sizes greatly reduce the amount of waste generated on site and that needs to be managed and diverted from landfills and incinerators. Use the following equation:
Waster per area = (Total construction and demolition waste generated / project gross floor area) x 100
INDOOR ENVIRONMENTAL QUALITY
Potential Points
LEED Requirements
Products
Thermal Comfort
To promote occupants’ productivity, comfort, and well-being by providing quality thermal comfort.
1
Meet the requirements for both thermal comfort design and thermal comfort control.
 
THERMAL COMFORT DESIGN
OPTION 1: ASHRAE STANDARD 55-2010
Design heating, ventilating, and air-conditioning (HVAC) systems and the building envelope to meet the requirements of ASHRAE Standard 55–2010, Thermal Comfort Conditions for Human Occupancy, with errata or a local equivalentl including Section 5.3, Optional Method for Determining Acceptable Thermal Conditions in Naturally Conditioned Spaces for operable windows. For natatoriums, demonstrate compliance with ASHRAE HVAC Applications Handbook, 2011 edition, Chapter 5, Places of Assembly, Typical Natatorium Design Conditions, with errata.
 
OPTION 2: ISO AND CEN STANDARDS
Design HVAC systems and the building envelope to meet the requirements of the applicable standards ISO 7730:2005 (Ergonomics of the Thermal Environment - using calculation of the PMV and PPD indices and local thermal comfort criteria) and CEN Standard EN 15251:2007 (Indoor Environmental Input Parameters for Design and Assessment of Energy Performance of Buildings Section A2) including natural conditioning using operable windows.
 
THERMAL COMFORT CONTROL
Provide individual thermal comfort controls for at least 50% of individual occupant spaces with the ability to adjust at least one of the following in their local environment: air temperature, radiant temperature, air speed, and humidity. Provide group thermal comfort controls for all shared multioccupant spaces.
Daylight
Provide building occupants with a connection to the outdoors, reinforce circadian rhythms, and reduce the use of electrical lighting by introducing daylight into the space.
1-3
Provide manual or automatic (with manual override) glare-control devices for all regularly occupied spaces. Select one of the following options.
(2-3)
(1-2 HC)
OPTION 1: SIMULATION: SPATIAL DAYLIGHT AUTONOMY AND ANNUAL SUNLIGHT EXPOSURE
Demonstrate through annual computer simulations that spatial daylight autonomy of at least 55%, 75%, or 90% is achieved for regularly occupied floor area. AND Demonstrate through annual computer simulations that annual sunlight exposure of no more than 10% is achieved for regularly occupied floor area that is daylit per the sDA300/50% simulations. Include any permanent interior obstructions.
(1-2)
OPTION 2: SIMULATION: ILLUMINANCE CALCULATIONS
Demonstrate through computer modeling that illuminance levels will be between 300 lux and 3,000 lux for 9 a.m. and 3 p.m. for regularly occupied floor area.
(2-3)
(1-2 HC)
OPTION 3: MEASUREMENT
Achieve illuminance levels between 300 lux and 3,000 lux for the floor area of at least 75% for regularly occupied floor area.
Quality Views
Provide building occupants a connection to the natural outdoor environment by providing quality views.
1-2
Achieve a direct line of sight to the outdoors via vision glazing for 75% of all regularly occupied floor area. View glazing in the contributing area must provide a clear image of the exterior, not obstructed by frits, fibers, patterned glazing, or added tints that distort color balance. Additionally, 75% of all regularly occupied floor area must have at least two of the following four kinds of views:
  • multiple lines of sight to vision glazing in different directions at least 90 degrees apart;
  • views that include at least two of the following: (1) flora, fauna, or sky; (2) movement; and (3) objects at least 25 feet (7.5 meters) from the exterior of the glazing;
  • unobstructed views located within the distance of three times the head height of the vision glazing; and
  • views with a view factor of 3 or greater, as defined in “Windows and Offices; A Study of Office Worker Performance and the Indoor Environment.” Include in the calculations any permanent interior obstructions. Movable furniture and partitions may be excluded. Views into interior atria may be used to meet up to 30% of the required area.
Acoustic Performance
Provide workspaces and classrooms that promote occupants’ wellbeing, productivity, and communications through effective acoustic design.
1-2
Meet the composite sound transmission class (STC) ratings of 45-60 depending on the type of space, or local building code, whichever is more stringent.
INNOVATION
Potential Points
LEED Requirements
Products
Innovation
Encourages projects to achieve exceptional or innovative performance.
1-3
Achieve significant, measurable environmental performance using a strategy not addressed in the LEED green building rating system. In writing, identify the intent of the proposed innovation credit, proposed requirements for compliance, proposed submittals to demonstrate compliance, and the design approach or strategies used to meet the requirements.

If you are looking for product applications or need technical assistance with your LEED project, contact Kawneer's Architectural Services Team (AST) at our toll-free numbers: (tel) 1.877.767.9107 or (fax) 1.877.767.9102.

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