Rockwool Sheets Built for Fire, Heat, and Sound Control

Trusted Rockwool Sheets Manufacturer for Fire-Thermal and Acoustic Projects

Xiaolong makes rockwool sheets for builders, contractors, and industrial buyers who need insulation that holds up under real conditions. Standard insulation often fails when temperatures climb, sound needs to be blocked, or fire safety codes must be met. Rockwool sheets solve this by combining high-temperature stability, sound absorption, and non-combustible protection in one material.Xiaolong has built its reputation on consistent product quality, tight dimensional tolerances, and full technical documentation for every batch.

Connect with our technical-sales group to get purpose-built rockwool sheets matching your construction, mechanical, and industrial thermal-acoustic requirements.

Distinct Functional Merits of Rockwool Sheets

Excellent High-Temperature Thermal Stability

· Rated for continuous use from -20°C to 420°C, holding shape and performance in demanding thermal environments.

· Low thermal conductivity (0.031–0.044 W/(m·K)) keeps heat loss down across a wide temperature range.

Flexible Roll-Shaped Structure for Curved Surfaces

· The pre-slit, cylindrical rockwool sheet structure wraps cleanly around pipes, ducts, and curved equipment without cracking.

· Inner diameters from 25–350 mm fit a broad range of round and irregular surfaces on site.

Superior Multi-Frequency Sound Absorption

· The fine fiber structure (5–8 μm average diameter) absorbs sound across a wide frequency range, reducing noise transmission.

· Low moisture uptake keeps acoustic performance stable over time, even in humid environments.

Customizable Facing Options for Field Environments

· Optional silver-grey aluminium foil facing adds a moisture and vapor barrier for exposed installations.

· Facing can be matched to project needs, from unfaced rockwool sheets to fully jacketed rolls ready for field installation.

Rockwool Sheets Specification Table

Project-Focused Application Domains for Rockwool Sheets

Building Envelope Fire-Insulation Systems

· Installed in curtain wall cavities and fire-rated partitions to slow flame spread between floors.

· Used behind cladding panels where non-combustible insulation is required by code.

Roof & Ceiling Insulation Constructions

· Laid across metal roof decks to cut heat gain and reduce energy costs.

· Fitted above suspended ceilings to improve both thermal comfort and sound control between floors.

Industrial Equipment & Ductwork Enclosures

· Wrapped around HVAC ductwork to limit heat loss and prevent condensation.

· Applied to boilers, tanks, and process piping operating at elevated temperatures.

Off-site Prefabricated Building Assemblies

· Pre-cut rockwool sheets integrated into panelized wall and roof systems during factory assembly.

· Used in modular building units where consistent thickness and density speed up quality control.

Practical Q&A for Rockwool Sheets

Is rockwool sheets material fire-resistant?

Yes. Rockwool sheets are made from centrifugal glass fiber and are non-combustible, which is why they are widely used in fire-rated building assemblies.

Can rockwool sheets be used outdoors?

Yes, when paired with an appropriate facing or exterior cladding. Bare rockwool sheets are best suited to protected or enclosed applications.

Do rockwool sheets absorb moisture over time?

Rockwool sheets have low moisture uptake by design, but long-term exposure to standing water or high humidity without proper facing can reduce performance.

Can Xiaolong supply rockwool sheets in custom dimensions?

Yes. Inner diameter, thickness, and piece length can be adjusted within Xiaolong's production range to match project drawings.

How are rockwool sheets packaged for shipping?

Rockwool sheets are compressed and rolled for transport to reduce shipping volume, then expand to full thickness once unpacked on site.

Order Rockwool Sheets From Xiaolong

Xiaolong supplies rockwool sheets built to project specifications, not just catalog standards. Whether you need custom density and thickness, bulk wholesale volumes, support for a project tender, our team is ready to help. Reach out to Xiaolong today and get rockwool sheets sized and specified for your next construction, mechanical, or industrial thermal-acoustic project.