Posted December 15, 2020

Pli-Dek waterproofing solutions meet new California fire requirements

High-performance deck and patio system from ICP has passed a 30-minute ASTM E84 fire test, now a requirement for decking materials in California.

ICP Building Solutions Group (ICP BSG) announces that its Pli-Dek® waterproofing solutions have demonstrated the performance necessary to meet stringent new fireproofing requirements in the state of California State Fire Marshal, resulting in the issuance of a Building Material Listing Wildland Urban Interface (WUI), Listing No. 8110-2327:0500.

As of November 2020, the California Residential Building Code requires that all decking materials must pass a 30-minute ASTM E84 fire test, which evaluates key fire resistance characteristics of building materials. Pli-Dek “F” System is now the only cementitious waterproofing solution to meet this new requirement. Previously, California required that decking materials only pass the ASTM E84 10-minute test.

“California legislators are doing everything in their power to shore up the fire resistance of homes and buildings in their state as a result of several consecutive record-setting wildfire seasons,” said Adrienne Malek, Vice President, Waterproofing, ICP Building Solutions Group (ICP BSG). “We had every reason to be confident that the Pli-Dek system would meet the new performance requirements, so we accelerated our testing to prove it. This is the same tried-and-true formulation that professionals have relied upon for decades.”

Pli-Dek “F” System is applied to plywood substrates to create beautiful, durable and high-performance decks, patios, walkways, as well as various other areas. While Pli-Dek meets California’s new fire requirements on its own, the system can be combined with ICP BSG’s Fireshell® thermal and ignition barrier coatings to create an even more robust solution (second Building Material Listing application pending).

In addition to the E84 test, the Pli-Dek systems have been through extensive ASTM testing certifying Pli-Dek’s high performance in even the most demanding applications. For more information about Pli-Dek, visit

About ICP Building Solutions Group
ICP Building Solutions Group is the foremost supplier of professional products and solutions for building envelope, cementitious and sports surface needs. Comprising dozens of industry-leading brands across numerous industries and applications, ICP Building Solutions Group offers the industry’s most comprehensive portfolios to building professionals all over the globe, all backed by its exclusive MasterWorks training and education program. For more information, visit