March 31, 2026 – MILTON, ON – ROCKWOOL—North America’s leading manufacturer of stone wool insulation—has released a new forward-thinking technical bulletin to support general contractors, architects, and building professionals in designing the next generation of resilient data center facilities. “Designing Resilient Data Centers with Stone Wool Insulation” offers practical strategies for designing building enclosures that protect these mission-critical infrastructures, by enhancing fire resilience, thermal management, and acoustic control.
The rapid expansion of cloud computing, artificial intelligence, and data-intensive applications has driven a global construction boom in large-scale data centers. The facilities pose complex design challenges with high stakes for maintaining reliable, continuous operations, as downtime costs are estimated at $9,000 per minute.
Innovative design solutions to meet unprecedented operational demands
“This new technical bulletin together with ROCKWOOL insulation solutions are designed to help building professionals meet the critical performance requirements from data center construction, with fire protection at the forefront,” says Antoine Habellion, ROCKWOOL Technical Director. “The building envelope, from roof to penetrations, must act as a unified passive fire protection system.”
While data center fires are uncommon due to comprehensive prevention and protection systems, when they do occur, the consequences can be severe. Effective fire protection in the building envelope is an essential part of a comprehensive strategy, including the exterior walls, roof, and critical internal partitions such as fire walls and fire stopping at service penetrations.
Design teams further need insulation solutions that can manage the intense noise levels and thermal loads generated by the continuously operating mechanical infrastructure to ensure reliable performance.
Holistic design strategies that protect critical digital infrastructure
The technical bulletin provides practical guidance on essential aspects of data center enclosure design, including:
- Fire safety & codes: IBC/NFPA/FM requirements, insurer expectations, and rated assemblies
- Enclosure strategies: tilt-up and precast concrete panels, IMPs, PEMBs, and mass timber – with stone wool solutions
- Roof systems: FM-Approved low-slope roofs, hail resistance, fire and acoustic performance with Toprock® DD
- Interior walls, floors/ceiling & acoustics: fire-rated partitions, sound control in noisy data halls, Rockfon® ceiling tiles
- Penetrations & firestopping: solutions for cable trays, ducts, and services using stone wool
- Sustainability: energy efficiency, decarbonization, and low-carbon enclosure options
Stone wool solutions contribute to comprehensive data center design
ROCKWOOL’s stone wool insulation solutions can be integrated into a variety of applications throughout data center enclosures, including exterior wall assemblies, roof systems, and interior partitions. Stone wool’s properties make it an effective choice for this challenge:
- Non-combustible insulation that supports fire-rated assemblies
- Strong acoustic performance for high-noise environments
- Durable thermal performance to improve energy efficiency
- Moisture-resistant, dimensionally stable materials that support long-term resilience and sustainability strategies
ROCKWOOL solutions—when integrated into tested systems and detailed correctly—support reliable operation, fire resilience, energy efficiency, and decarbonization goals, aligning high technical performance with long-term operational and sustainability objectives.
The technical bulletin is available here. Additional resources and information can be found on ROCKWOOL's dedicated data center page. ROCKWOOL recommends regularly checking rockwool.com/buildingscience to ensure users have the most up to date documentation.