Microporous & Aerogel
Glass Wool Blanket
Centrifugal glass wool blanket for large-scale thermal and acoustic insulation with excellent shock absorption. Temperature: -120℃ ~ 400℃.
Thermal & Acoustic Insulation
Glass Wool Insulation — Blanket, Board & Acoustic
Factory-direct glass wool insulation rated -120°C to 400°C, A1 non-combustible with excellent acoustic performance. ISO 9001 manufacturer since 1982 — get a quote in 24 hours.
ISO 9001 Certified
Since 1982 Factory
Fast Global Delivery
Insulation Material Installation Cases
Glass Wool On‑site Construction Gallery
Browse real‑world project photos of glass wool roll felt and rock wool board. View installation on steel‑structure roofs, external walls, HVAC ducts and partition walls for thermal, fire and sound insulation solutions.
aluminum foil glass wool hvac air duct insulation
glass wool board external wall insulation construction
glass wool blanket on metal roof construction site
glass wool composite collage production installation application
glass wool wall ceiling insulation wood framing building site
glass‑wool‑roll‑felt‑installation‑steel‑structure‑roof
aluminum‑foil‑glass‑wool‑blanket‑roof‑hvac‑ductwork
foil‑faced‑glass‑wool‑hvac‑duct‑insulation‑site
glass‑wool‑blanket‑roll‑installation‑attic‑wood‑joist
fiberglass wool wall insulation around door frame installation
Overview
Glass wool insulation — also called fiberglass insulation or glass fiber wool — is a lightweight thermal and acoustic insulation made from recycled glass spun into fine fibers. It delivers low thermal conductivity (λ ≈ 0.036 W/m·K), A1 non-combustibility and excellent sound absorption, at a lower cost than rock wool or ceramic fiber.
Rosetexwool manufactures glass wool in rigid and flexible forms for building, HVAC and industrial applications:
- Glass wool blanket — flexible rolls and mats for large-area thermal and acoustic insulation
- Glass wool board — rigid panels with high compressive strength for walls, ducts and equipment
Key properties
- Temperature range: -120°C to 400°C (continuous service)
- Thermal conductivity: λ ≈ 0.036 W/m·K — low heat loss
- Fire rating: A1 non-combustible — fire-safe for building partitions
- Acoustic: high NRC — effective sound insulation for walls, ceilings and HVAC
- Form: blanket, mat, board and panel (cut-to-size available)
Applications & Supply
Applications — thermal & acoustic insulation
Glass wool is the workhorse of building and HVAC insulation, used for heat insulation and sound insulation alike:
- Building thermal insulation — walls, roofs, floors and partitions
- Acoustic insulation — acoustic glass wool for studios, offices, cinemas and machinery enclosures (noise control)
- HVAC & ductwork — pipe and duct lagging for heat insulation
- Industrial equipment — tanks, vessels and ovens up to 400°C
Why buy from Rosetexwool
As a glass wool manufacturer and supplier with our own factory (since 1982), we serve distributors, contractors and OEMs directly:
- ISO 9001 certified production with full traceability
- Factory-direct pricing — save up to 30% vs trading companies
- Custom density, thickness and facing (aluminum foil, kraft, glass tissue)
- Export to 30+ countries with fast global delivery
- 24-hour quotation on blankets, boards and panels
Send us your operating temperature, dimensions and quantities for a same-day quote.
Need a quote for glass wool insulation?
Send us your density, thickness, facing and quantities.
Why choose Rosetexwool?
We deliver industrial-grade thermal solutions trusted by engineers worldwide.
Excellent Acoustic
High NRC for sound insulation — walls, ceilings, studios and machinery enclosures.
A1 Non-Combustible
Fire-safe inorganic insulation for building partitions and ducts.
Low Thermal Conductivity
λ ≈ 0.036 W/m·K reduces heat loss and energy cost across -120°C to 400°C.
Products
Solutions for your needs
Explore our recommended products tailored to your application requirements.
Support
Frequently asked questions
What is the temperature range of glass wool insulation?+
Glass wool is rated for continuous service from -120°C to 400°C. It is a low-to-medium temperature insulation — above 400°C you should use rock wool (750°C) or ceramic fiber (1430°C) instead.
Is glass wool insulation fire resistant?+
Glass wool is A1 non-combustible, meaning it does not burn or contribute to fire spread. For structural fire-rated barriers above 400°C, rock wool's higher melting point makes it the stronger choice.
Can glass wool be used for high temperature insulation?+
No. Glass wool caps at 400°C, so it is not a high-temperature material. For high-temperature insulation, choose rock wool (up to 750°C), calcium silicate (1100°C) or ceramic fiber (1430°C).
Is glass wool good for sound insulation?+
Yes. Acoustic glass wool has a high noise reduction coefficient (NRC), making it ideal for sound insulation in walls, ceilings, studios, offices and machinery enclosures.
What is glass wool used for?+
Glass wool is used for thermal insulation and acoustic insulation in building walls, roofs and floors, HVAC ducts, and industrial equipment up to 400°C. It comes as blanket, mat, board and panel.
What does glass wool insulation cost?+
The cost of glass wool depends on density, thickness and facing. As a factory-direct manufacturer we typically save customers up to 30% vs trading companies — send your specifications for a 24-hour quote.