How do DOUGLAS calcium silicate boards compare to gypsum boards for fire-rated applications?

DOUGLAS calcium silicate boards significantly outperform standard gypsum boards in fire-rated applications, offering up to 4-hour fire ratings compared to typical 1-2 hour ratings for gypsum. Our boards maintain structural integrity at higher temperatures (up to 1000°C) and don't contain water of crystallization that evaporates during fire exposure. This makes them ideal for critical fire barriers, elevator shafts, and escape routes where extended protection is essential. Request our comprehensive fire testing data for your specific project requirements.

Our calcium silicate boards offer versatile solutions for multiple applications including interior partitions, exterior cladding, ceiling systems, and specialized fire-rated assemblies. The boards feature excellent workability for cutting, drilling, and fastening while maintaining structural integrity. DOUGLAS boards are environmentally friendly, containing no harmful substances, and provide outstanding acoustic performance. With decades of industry experience, we ensure consistent quality and compliance with international building standards, making these boards the preferred choice for architects, contractors, and developers worldwide.