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LEED is an eco-friendly building certification system developed and implemented by the US Green Building Council. We evaluate not only the sustainability, energy efficiency and quality of the indoor environment of the building, but also the eco-friendly grade of the facilities and resources that make up the building.

Kingspan KoolDuct Phenolic Foam meets LEED specifications

Contributes to building projects achieving LEED Platinum status


USGBC Headquarters

US Green Building Council

Kingspan phenolic foam duct applied to headquarters building.

The first historic building in the United States to achieve a Platinum (top-class) LEED.


Project: USGBC Headquarters

Location: Washington DC

Owner: USGBC

Architect: EnVision Design

Notes: LEED Platinum Rated


Certification is granted at four levels

Certified, Silver, Gold, Platinum





Supports high-performance, cost-effective project outcomes through early analysis of the interrelationships between systems.



Starting with pre-design and continuing throughout the design phase, identify and use opportunities for synergies across disciplines and building systems to evaluate strategies related to: programming and operational parameters. Multifunctional space, operating schedule, space allocation per capita, telecommuting, building area reduction, estimated operation and maintenance assessment

How the Kingspan KoolDuct system meets this

The size of a building's space is usually calculated as 'building floor area', but volume can be just as important. KoolDuct HVAC pre-insulated ducts are constructed of thermally efficient insulation and occupy less building volume than galvanized ducts insulated with thick mineral fibers of the same R value. Duct made with the Kingspan KoolDuct System saves space by eliminating the space required to manually install extra insulation around the duct.

Considering the initial design may increase some usable floor space or reduce the volume of the building.


Intent 2.1 Prerequisite Minimum Energy Performance

Reducing environmental and economic damage from excessive energy use by achieving minimum levels of energy efficiency for buildings and systems. Option 1. Full Building Energy Simulation


Option 1. Full building energy simulation. It shows the improvement of the proposed building performance rating compared to the reference building. Calculate baseline building performance according to ANSI / ASHRAE / IESNA Standard 90.1–2010, Appendix G.

Option 2. Compliance ASHRAE 50% Complies with the mandatory and regulatory provisions of the Advanced Energy Design Guide ANSI / ASHRAE / IESNA Standard 90.1–2010. Compliance with HVAC and water heating requirements

2. Energy performance


How the Kingspan KoolDuct system meets this

  • Kingspan KoolDuct systems meet the requirements for IESNA Standard 90.1 Minimum Duct Insulation R-Value.

R-Value for Kingspan KoolDuct System:

  • R-6 KoolDuct 7/8” (22 mm, metric R-value 1.05 m2.K/W)

  • R-8 KoolDuct 1 3/16” (30 mm, metric R-value 1.43 m2.K/W)

  • R-12 KoolDuct 1 25/32” (45 mm, metric R-value 2.15 m2.K/W)

Kingspan KoolDuct systems meet or exceed the requirements for the standard 90.1 minimum duct insulation R-value.

In addition, KoolDuct is UL 181 Listed and as required by the ASHRAE Advanced Energy Design Guide, the duct airflow surface is

Resistant to mold growth and corrosion as confirmed by the UL 181 test program.

(See ASHRAE AEDG, HV23: All airflow surfaces must be resistant to mold growth and erosion in accordance with the requirements of ASHRAE 62.1)

Intent 2.2 Prerequisites Basic refrigerant management

To reduce stratospheric ozone depletion



Do not use chlorofluorocarbon (CFC) based refrigerants in (HVAC & R) systems.

Intent 2.3 Optimizing Energy Performance

To increase the level of energy performance beyond the prerequisites in order to reduce the environmental and economic damage associated with excessive energy use.



Set energy performance targets no later than the schematic design phase. The target should be set in square feet of source energy use - kBtu per year (square meters - kW per year).

Option 1. Full Building Energy Simulation

Analyze efficiency measures during the design process and consider the results of design decisions. Use published data (such as Advanced Energy Design Guides) from energy simulations of efficiency opportunities, historical energy simulation analyzes for similar buildings, or analyzes for similar buildings. Analyzes efficiency measures with a focus on load reduction and HVAC-related strategies that are appropriate for the facility (allowing for passive action). Estimate potential energy savings and overall project cost impacts associated with all affected systems.

How the Kingspan KoolDuct system meets this

KoolDuct is free from CFCs and HCFCs and has no ozone depletion potential.

How the Kingspan KoolDuct system meets this

The R-value of KoolDuct, along with a lower air leak rating (which may be lower than leak class 6), can increase the energy performance level beyond the prerequisites. When performing a full building energy simulation, it can show the percentage of improvement in the proposed building performance compared to a baseline building performance rating.

Intent 2.4 Improved Refrigerant Management

Reduce ozone depletion and support early compliance with the Montreal Protocol while minimizing its direct contribution to climate change.



Do not use refrigerants or use only refrigerants (naturally occurring or synthetic) with an ozone depletion potential (ODP) of zero and a global warming potential (GWP) less than 50.

How the Kingspan KoolDuct system meets this

KoolDuct is a low-impact blowing agent with zero ODP, GWP of £5 (5 pieces or less).


3. Materials and sources


Intent 3.1. Reduce building lifecycle impact

Encourage adaptive reuse and optimize the environmental performance of products and materials.



Demonstrate reduced environmental impact during initial project decision making by reusing existing building resources or demonstrating reduced material use through life cycle assessments.

Option 1. Reuse historic buildings

​Option 2. Whole building life cycle assessment (for new construction)

How the Kingspan KoolDuct system meets this

The Kingspan KoolDuct system is ideal for projects where space and existing design aspects may be an issue, such as historic buildings.

The system is lightweight and installed with a single fixture and, if necessary, flush with the ceiling.

This means that there is only minimal intervention into the features existing in the existing building.

KoolDuct life cycle assessment shows reduced material usage and environmental impact compared to galvanized steel

(See: BRE Global's KoolDuct Lifecycle Assessment)

Intent 3.2. Building Product Disclosure and Optimization Environment Product Declaration

Encourage the use of products and materials for which lifecycle information is available and with environmentally, economically and socially desirable lifecycle impacts. Reward project teams for selecting products from manufacturers that have identified improved environmental lifecycle impact.



Environmental Product Declaration (EPD) • Environmental product declaration conforming to ISO 14025, 14040, 14044 and EN 15804 or ISO 21930.

How the Kingspan KoolDuct system meets this

KoolDuct was evaluated according to BRE Global's Environmental Profile Methodology, a life cycle assessment method compliant with the relevant ISO standards (ISO 21930, ISO 14025, ISO 14040 and 14044). BRE has given Kingspan KoolDuct panels an Eco Guide summary rating of “A”

Intent 3.3. Building Product Disclosure and Optimization - Raw Material Sourcing

Encourage the use of products and materials in which lifecycle information is available and impacts an environmentally, economically and socially desirable lifecycle. Rewards project teams for selecting products that have been identified as being extracted or sourced in a responsible manner.



Option 1. Report raw material sources and extractions

Option 2. Leadership extraction practices.

How the Kingspan KoolDuct system meets this

The raw materials of the KoolDuct insulation boards produced by Kingspan Insulation Ltd have been verified to be sourced in a responsible manner through a third party verified Corporate Sustainability Report (CSR). Manufactured at Kingspan Insulation Ltd's Pembridge manufacturing facility, Kingspan KoolDuct panels are BES 6001 'Excellent' certified.


4. Indoor environment quality



Reduce concentrations of chemical pollutants that can damage air quality, human health, productivity and the environment.



These credits cover product manufacturing requirements. The project team determines the emission of volatile organic compounds (VOC) into the indoor air and the VOC content of the material as well as the indoor VOC emissions.

Option 1. Calculate Product Category

How the Kingspan KoolDuct system meets this

KoolDuct insulation boards are tested and their VOC emissions meet LEED v4 (non-US) standards. In other words, it is a reference test according to the German AgBB test and evaluation scheme and French law on the VOC emission class labeling.


Ducts made with Kingspan KoolDuct systems also comply with VOC limits.


Case 1 onsite

  • Ducts from the Kingspan KoolDuct system can be field assembled using the exclusive Kingspan KoolDuct Tiger Clip system (no VOC).

  • The volatile organic compound (VOC) content of Kingspan KoolDuct Silicone Sealant ref.231G is below the permissible limit.

note :

VOC ref.231G = 43g/liter of Kingspan KoolDuct Silicone Sealant.

Duct Sealant Restrictions: LEED/SCAQMD standard = 250 g/liter or less.



Case 2 offsite

• Ducts from the Kingspan KoolDuct system can be assembled off-site using the proprietary Kingspan KoolDuct Tiger Clip system (no VOC) or contact adhesives.

• When Kingspan KoolDuct System's ductwork is manufactured off-site and the adhesives and sealants used during construction are cured, the volatile organic compounds (VOCs) in the cured adhesives and the manufactured ducting silicone used inside the building exceed acceptable limits. 0 is low


5. Revolution



Encourage projects to achieve exceptional or innovative outcomes.



Project teams can use a combination of innovation, pilot, and exemplary performance strategies.

How the Kingspan KoolDuct system meets this

KoolDuct HVAC pre-insulated duct is an innovative solution compared to traditional galvanized sheet duct.

  • Weight Savings: Phenolic pre-insulated duct is significantly lighter than galvanized steel (up to 75% reduction).

  • Easy installation and maintenance: They are already insulated and lightweight, making them easy to handle and install.

  • Best Thermal Performance: Constructed from phenolic insulation boards that provide the best thermal performance of any other thermal insulation product on the market. Thermal Conductivity (50-74°F (10-23ºC) average 0.146 .ºF (0.02 W/mK) per ASTM C 518

  • Insulation Efficiency: Because the insulation is rigid and does not compress at the edges of the duct, the specified level of insulation can be maintained throughout the duct.

  • Health and Safety: Phenolic Pre-Insulated Ductwork is safer for field workers to use and its light weight can help prevent potential injuries when lifting heavy objects or falling heavy objects.

  • UL 181 Listing: Kingspan KoolDuct systems' phenolic pre-insulated ducts are UL 181 listed as they are constructed to specifications clearly defined by UL.

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