Many customers confuse rock wool and glass wool. Both belong to mineral fiber insulation materials, but they differ greatly on fire resistance, temperature resistance and application scope.
1. Raw material
Rock wool: produced from basalt rock.
Glass wool: produced from recycled glass.
2. Fire‑resistant & temperature resistance
Rock wool: Class‑A non‑combustible, maximum working temperature up to 700‑1000℃.
Glass wool: fire rating is lower, maximum long‑term working temperature around 250‑300℃.
👉 Conclusion: For high‑temperature industrial sites and strict fire‑protection projects, rock wool is the better solution.
3. Thermal insulation
Both have good thermal insulation performance at normal building temperature.
4. Application scenarios
Rock‑wool best fits:
Industrial high‑temperature equipment, petrochemical pipelines, building fire‑proof walls, exterior wall insulation.
Glass‑wool best fits:
Common HVAC air‑condition duct insulation, low‑temperature indoor ceiling insulation.
Final buying advice:
If your project needs high fire‑safety grade or continuous high‑temperature working environment, choose rock wool. For low‑temperature indoor HVAC projects, glass wool can be an economical option.
Tell us your project conditions, our sales team will recommend the most cost‑effective insulation solution for you.