Foamed Drywall Waste Panels (FDWP): A fire-protective insulation technology

­Unmet Need: Environmentally friendly fire-protective insulation material

Flammable plastic foam insulation (aka Styrofoam) has been under scrutiny in recent building fires. Noncombustible alternatives are costly & produced with carbon-emitting fuels. Concurrently, there is pressure to end landfilling of gypsum drywall waste from building construction & demolition since drywall waste decays and emits hydrogen sulfide gas, impacting quality of life & health.

The Technology: Conversion of Gypsum waste into foamed insulation material    

The proposed invention is a highly air-entrained insulation material utilizing novel composite mixtures containing gypsum drywall waste. Composite mixtures from this WSU invention are formed into air-entrained insulation blocks, sheets, panels or other materials. Air entrainment is accomplished through incorporation of pre-made foams or by incorporating various admixtures with the composite mixtures resulting in foam formation on hydration of the mixture.


  • Weatherization of buildings and making them fire-resistant.
  • Retrofitting material to be applied to buildings.


  • Cost-effective solution replacing flammable plastic foam leveraging inherent fire-protective properties of gypsum.
  • FDWP provides superior insulation performance as compared to current Drywall product applications.
  • FDWP exhibits superior fire resistance, improved thermal conductivity and lowered density.

Intellectual Property:

A US patent application has been filed.

Learn More

Rabindra Nanda
Technology Licensing Associate Senior
Washington State University
(509) 335-8608
Reference No: TECH-19/3250


David Drake
Taiji Miyasaka

Key Words

Building Materials
Clean Tech