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Huntsman Introduces W-Wall Assembly Solution

Huntsman Introduces W-Wall Assembly Solution

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Home New Products Huntsman Introduces W-Wall Assembly Solution

Huntsman Building Solutions, a global leader in high performance, sustainable building envelope solutions, today introduced W-Wall™, a fire-safe load-bearing wall assembly utilized for partition walls between attached multifamily and townhome units. A design solution created specifically for architects and builders, W-Wall is the first two-hour fire rated load-bearing wall assembly tested and approved for use with open cell spray foam. Huntsman Building Solutions’ open cell spray foam insulation solutions have been certified for use with W-Wall, providing sound attenuation and energy efficiency capabilities as part of the assembly solution. Use of the assembly design meaningfully reduces construction and labor costs.

“W-Wall provides architects and builders with a partition wall assembly design that is already tested and certified for use with open cell spray foam, and which enhances fire safety and acoustical performance,” says Doug Brady, vice president of global innovation and product management with Huntsman Building Solutions. “Providing an air seal and sustainable soundproofing capabilities, this assembly solves blower door issues and provides comfort and ease-of-mind to the residents living on either side of it.”

The W-Wall Assembly design incorporates a series of materials in addition to Huntsman Building Solutions’ open cell spray foam insulation. All of the materials include: wall sheathing consisting of two layers of 5/8” Type X Gypsum wallboard on each side of the assembly; walls constructed with 2×4 studs at 16” on-center (no need for 8” off-set); sheathing secured with screws, and the finished layer covered with tape and joint compound; one side of the wall leaf filled with 3.5” of Huntsman Building Solutions open cell spray foam insulation; and a 1” air gap between the two wall leafs. The overall assembly is 1” thinner than the typical shaft wall.

W-Wall is assembled at the construction site by framers and/or spray foam contractors. W-Wall is fire rated for two hours, passing ASTM E119 in accordance with IBC requirements, making it the first spray foam wall assembly solution of its kind to pass. The W-Wall assembly also notably allows for easy installation and an overall quicker build as compared to alternate partition wall solutions, essentially reducing labor costs. 

“The benefits of W-Wall are clear when you consider the long-term performance consistency of spray foam, and the reduced labor costs and improved assurances of meeting construction milestones that come with it,” adds Brady. “This assembly design is essentially a simpler, better solution for architects and builders. It’s also faster and easier to install.”

Many of Huntsman Building Solutions’ open cell spray foam insulation solutions have been successfully certified for effective use with W-Wall. These high-performance insulations include: Sealection 500, Sealection NM, FOAM-LOK 450, FOAM-LOK 500, OC NO-MIX, Classic Ultra Select, Classic Plus and Classic Ultra.

Additional certifications of W-Wall include ASTM E90-STC 57, ASTM E2178 Air Permeance, ESL 1373 – ICC Evaluation Service Listing, and TER 2011-01 – Technical Evaluation Report. W-Wall is also, depending on the installed products, Greenguard Gold certified, indicating low VOC emission, ensuring better indoor air quality

To explore W-Wall, visit https://www.huntsmanbuildingsolutions.com/en-US/sites/en_us/files/2021-12/21.00269-HBS_W-Wall_US_EN_Bifold-V3-DIGITAL.pdf

About Huntsman Building Solutions: 

The Huntsman Building Solutions business is a global leader in high-performance, sustainable building envelope solutions. Its systems and solutions are widely utilized to optimize commercial and residential structures worldwide in both new construction and retrofit applications. Formed in 2020 with the acquisition of Icynene-Lapolla and its combination with Demilec, the Huntsman Building Solutions business capitalizes on legacy industry technologies, environmental stewardship and the power of the Huntsman brand. Visit www.huntsmanbuilds.com

About Huntsman:

Huntsman Corporation is a publicly traded global manufacturer and marketer of differentiated and specialty chemicals with 2021 revenues of approximately $8 billion. Our chemical products number in the thousands and are sold worldwide to manufacturers serving a broad and diverse range of consumer and industrial end markets. We operate more than 70 manufacturing, R&D and operations facilities in approximately 30 countries and employ approximately 9,000 associates within our four distinct business divisions. For more information about Huntsman, please visit the company’s website at www.huntsman.com.   

 

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