Insulated wall panelization technology: a blueprint for simplified, on-site residential construction

San Francisco, June 26, 2018 — Faced with a skilled labor shortage, builders are increasingly turning to panelization — the prefabrication of structural building components in a factory instead of the job site — to help them meet the housing boom. Panelization offers several benefits. Namely, it:

  • Addresses the decline and shortage of skilled construction workers
  • Produces consistent, high-quality components in a controlled environment
  • Reduces cycle time, waste and labor costs

PUReWall™ panels help builders and panelizers meet construction demand. At PCBC, June 27-28, in San Francisco, cost-effective, high-performance, insulated structural PUReWall™ wall panels will be highlighted at booth #833, showcasing the technology behind them.

PUReWall™ panels are constructed at a panelization facility using conventional wood frames and polyurethane-based insulation that is both continuous and between framing. The rigid polyiso board continuous insulation reduces thermal bridging and has an integrated weather resistive barrier that eliminates the need for plastic house wrap. When combined with a structural closed cell spray polyurethane foam used in the stud cavity, PUReWall™ panels provide a similar unit shear capacity to continuously sheathed wood structural panels.

PUReWall™ panels also provide the following advantages:

  • Increased R-value and decreased air infiltration, contributing to a higher Home Energy Rating System (HERS) index score
  • Passes ASTM E331 with an integrated weather-resistant barrier featuring polyiso board with coated glass facer and taped joints
  • Scalable to provide thermal performance in the wall assembly as part of an overall building envelope approach for a Net-Zero capable structure
  • Adaptable to meet all Climate Zone U values in IRC 2015
  • Adaptable to meet California’s Title 24 energy efficiency code requirements
  • Has minimal potential for condensation in the wall assembly in both hot/humid and cold climates versus conventional wall assemblies
  • Minimizes wall thickness to maximize square footage without encroaching on lot lines

Covestro LLC, which has for decades supplied raw materials to the building and construction industry, developed and now licenses this game-changing technology.

“We’ve seen firsthand how the dynamics of the residential construction industry have shifted and the challenges that have come along with it. We developed the PUReWall™ system as a solution to the needs we identified,” says Jim Lambach, manager of Building and Construction, Industrial Marketing, Polyurethanes, Covestro LLC. “By licensing our PUReWall™ technology, panelizers can integrate higher levels of functionality and quality in a wall assembly that simplifies on-site construction for builders with less waste, time and cost. The end product meets or exceeds International Energy Conservation Code (IECC) 2015 requirements, providing a better wall assembly for homeowners.”

PUReWall™ panels are available in a range of configurations to meet thermal requirements, with demonstration panels for each located at the booth:

  • PUReWall™ 60 panels: U-0.060 (equivalent to R-20 or R-13+R-5c.i. for wood-framed walls in IECC R402.1.2) for Climate Zones 1-5 in IRC 2015 [2x4 construction with framing 24” on center (o.c.), 1” polyiso continuous insulation, 1.5” spray polyurethane foam insulation]
  • PUReWall™ 45 panels: U-0.045 equivalent to R-20+R-5 c.i. or R-13+R-10c.i.for wood-framed walls in IECC R402.1.2) for Climate Zones 6-8 in IRC 2015 [2x4 construction with framing 24” o.c., 2” polyiso, 1.5” spray polyurethane foam insulation]
  • PUReWall™ 30 panels: U-0.030 for beyond code wall assemblies for aspirational building designs, such as Net-Zero ready [2x6 construction with framing 24” o.c., 2” polyiso, 2.0” spray polyurethane foam insulation and fiberglass batt, reaching down to U-0.030

PCBC attendees are invited to visit the PUReWall™ booth (#833) to speak to building and construction experts and learn more about the panelized wall.

About PUReWall™:

PUReWall™ panels are panelized walls that have been structurally engineered with a combination of polyisocyanurate continuous insulation on the exterior and spray polyurethane foam in the wall cavity. This innovative technology is approved for use in residential construction. PUReWall™ is a registered trademark of Covestro LLC, one of the leading producers of high-performance polymers in North America, headquartered in Pittsburgh, Pennsylvania. Part of the global Covestro business, among the world’s largest polymer companies, Covestro has 30 production sites worldwide and employed approximately 16,200 people at the end of 2017.

About Covestro LLC:

Covestro LLC is one of the leading producers of high-performance polymers in North America and is part of the global Covestro business, which is among the world’s largest polymer companies with 2017 sales of EUR 14.1 billion. Business activities are focused on the manufacture of high-tech polymer materials and the development of innovative solutions for products used in many areas of daily life. The main segments served are the automotive, construction, wood processing and furniture, electrical and electronics and healthcare industries. Other sectors include sports and leisure, cosmetics and the chemical industry itself. Covestro has 30 production sites worldwide and employed approximately 16,200 people at the end of 2017.

Find more information at or

Covestro Contact:

Russ Glorioso, Phone: +1 412 525 9330

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This press release may contain forward-looking statements based on current assumptions and forecasts made by Covestro AG. Various known and unknown risks, uncertainties and other factors could lead to material differences between the actual future results, financial situation, development or performance of the company and the estimates given here. These factors include those discussed in Covestro’s public reports which are available on the Covestro website at Covestro assumes no liability whatsoever to update these forward-looking statements or to conform them to future events or developments.

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