Rock Wool Board for Flexible Roof Insulation

1. Excellent Fire Performance (Non-Combustible)

Rock wool roofing boards are Euroclass A1 non-combustible with a melting point exceeding 1000°C. They do not ignite, propagate flames, or release toxic smoke during fire exposure. In flat roofs on steel or concrete decks, they provide a reliable fire barrier, protecting structural elements and contents while offering superior performance compared to combustible plastic foams (PIR, EPS, XPS).

2. High Compressive Strength and Resistance to Foot Traffic

Roof systems often require access for maintenance, HVAC equipment, solar panels, or inspections. Roofing-grade rock wool boards are designed with high compressive strength (typically ≥40–80 kPa at 10% deformation). Many feature dual-density construction—a denser, harder top layer that resists point loads, puncturing, and indentation, thereby protecting the waterproofing membrane from damage.

3. Superior Rain Noise Reduction

On metal deck roofs with single-ply membranes, rain and hail can produce significant “drumming” noise. The dense, fibrous structure of rock wool acts as an effective acoustic absorber, typically reducing rain-impact noise by 8–15 dB compared to plastic foam insulations, resulting in a noticeably quieter indoor environment.

4. Outstanding Dimensional Stability

Roofing insulation is exposed to wide temperature fluctuations (from sub-zero winters to roof surface temperatures exceeding 80°C in summer). Rock wool exhibits virtually no shrinkage, expansion, or warping over time. This stability prevents the formation of gaps or thermal bridges and minimizes stress on membrane joints, reducing the risk of leaks common in less stable insulation materials.

5. Long-Term Thermal Performance and Chemical Compatibility

As an inorganic material without blowing agents, rock wool maintains its declared thermal conductivity (λ value) throughout the building’s lifespan. It is fully compatible with common single-ply roofing membranes (PVC, TPO, EPDM) and associated adhesives, exhibiting no chemical reactions that could degrade the waterproofing layer or cause long-term performance loss.

About Us

• Leading Rock Wool Manufacturer with Proven Industry Expertise
  Founded in 2009, Anhui Liluan Technology Co., Ltd. stands as a trusted name in mineral wool insulation manufacturing. We specialize in producing high-performance rock wool boards, blankets, and pipe insulation materials widely used in construction, industrial, and agricultural applications. With over 15 years of focused development, Liluan combines advanced manufacturing knowledge with strict quality standards, supporting global partners in achieving better thermal, fire, and sound performance.
  
• Fully Integrated Production Lines Backed by Stringent Quality Control
  Our production base operates cutting-edge automated lines designed to maximize efficiency and ensure uniform quality. Each stage of the process—from raw material selection to final product packaging—is subject to rigorous inspections, meeting ISO 9001 and CE certification standards. Our integrated systems enable large-volume, custom-dimension production that adapts seamlessly to specific project requirements, ensuring both product performance and cost-efficiency.
• Scalable Output with Global Market Reach
  With an annual output capacity sufficient to serve large-scale international contracts, Liluan is well-positioned to support long-term industrial supply chains. Our export network spans across Europe, the Middle East, Southeast Asia, and the Americas, reflecting a proven ability to deliver quality consistently and on time. Customers rely on our flexible logistics and responsive support team to simplify procurement and ensure reliability in every delivery.
• Commitment to Sustainable Manufacturing and Customer-Centric Service
  Sustainability is embedded in our manufacturing processes—from energy-efficient kilns to the use of recyclable packaging. Our products enhance building insulation performance, contributing to energy conservation and carbon emission reduction. We offer personalized pre-sale consultation, technical support, and post-sale assistance, aligning every project with client goals. Whether you are sourcing for infrastructure, OEM supply, or retail channels, Liluan is your capable and responsible partner in insulation solutions.