Closed cell spray PU foam with sustainable content

BASF is expanding its spray polyurethane foam (SPF) portfolio with Walltite RSB, a next-generation, closed-cell spray polyurethane foam. In response to the growing demand for more sustainable building materials, Walltite RSB combines what the company calls “industry-leading performance” with a blend of recycled and renewable content for a lower overall carbon footprint.

BASF engineered the system with a proprietary resin formulation that incorporates both recycled and biobased raw materials. The result is a spray foam insulation solution the company says enables customers’ green transformation with transparent, third-party verified environmental benefits, including reduced embodied carbon.

“We want to create double-added value for our customers by providing high-performance and sustainable solutions,” said Nancy Houle, BASF business director for spraypolyurethanes North America, “Walltite RSB supports green building programs by offering two key advantages: it can improve the energy efficiency throughout the building’s lifespan and lower embodied carbon from the outset of construction.”

Walltite RSB’s credentials include pending USDA BioPreferred Program certification and UL Solutions validation of recycled and biobased content. In addition, a manufacturer-specific Environmental Product Declaration (EPD) confirms measurable reductions in embodied carbon compared to conventional formulations.These accreditations make Walltite RSB an ideal option for projects pursuing LEED certification, meeting EPA Preferred Purchasing recommendations, or aligning with both public and private sector low-carbon construction mandates.

Photo: a before (left) and after (right) application of Walltite RSB (© BASF)

BASF US