Roxul RHT Flex 40

Technical Data Sheet

ROXUL® products are mineral wool fibre insulations made from basalt rock and slag. This combination results in a noncombustible product with a melting point of approximately 2150°F (1177°C), which gives it excellent fire resistance properties. ROXUL mineral wool is a water repellent yet vapour permeable material.

The RHT® 40 Flex product is a flexible industrial blanket mineral wool insulation that is lightweight, water repellent, fire resistant and sound absorbent. RHT 40 Flex is suitable for use in many O.E.M. industries, petro-chemical, power generating plants, boilers, furnaces, towers, ovens and drying equipment. The product is non-combustible and can be specified with confidence where fire performance is of concern. 

Key Application Qualifiers


  • Flexibility
  • Non-combustibility
  • Low moisture sorption
  • Can be fabricated/laminated
  • Fire resistant
  • Excellent thermal resistance
  • Does not rot or sustain vermin
  • Does not promote growth of fungi or mildew
  • CFC and HCFC free product and process
  • Made from natural & recycled materials