Rockwool Kenya Rockal Rolls

Rockwool Blanket with Mesh Rockal

Rockwool Blankets

Rockwool blanket insulation is a type of flexible insulation made from spun mineral wool, which is derived from a mixture of volcanic rock and slag. Rockwool Rolls are high performance solution for thermal & acoustic insulation for a range of commercial and industrial Buildings

Rockwool from Rockal

ROCKAL Rockwool Duct Warp is a type of flexible insulation made from spun mineral wool, which is derived from a mixture of volcanic rock and slag.

Fibers are bonded together with a thermosetting binder which gives the flexibility & resilience to the products. Rockal Rockwool blankets are high performance solution for thermal & acoustic insulation for a range of commercial and industrial Buildings.

They are durable, easy to handle, cut and install. ROCKAL Rockwool Rolls comply with ASTM C-553-92 Type VII, E-84, E-119.

Rockal Rockwool: Application

  • Thermal & Acoustic insulation of rectangular and round, heating, ventilation, air conditioning duct work temperature range 10°C to 600°C.
  • Used in commercial, industrial, and residential buildings specially for small areas. Helps saving energy up to 80%, controlling heat loss or gain and condensation during system operations.
  • Wall insulation – Rockwool blanket insulation can also be used in walls, either as a standalone insulation solution or as a supplement to existing insulation.
  • HVAC systems – Rockwool blanket insulation is commonly used to insulate heating and cooling ducts, reducing heat loss and improving energy efficiency.
  • Fireproofing – Rockwool blanket insulation can also be used for fireproofing in areas where fire safety is a concern.

Rockwool Blankets Facing

ROCKAL Duct Wrap are faced with reflective vapor barrier material (Reinforced Aluminum Foil FSK).
FSK, FRK, Unfaced, Wire mesh, BGT, BGF, Kraft Paper, Vinyl Film.


  1. Fire resistance – Rockal Rockwool blanket insulation has excellent fire resistance, making it an ideal choice for areas where fire safety is a concern.
  2. Soundproofing – Rockal Rockwool blanket insulation provides excellent soundproofing properties, making it a great choice for noisy areas like theaters, recording studios, and multi-unit dwellings.
  3. Durability – Rockal Rockwool blanket insulation is long-lasting, durable and does not deteriorate over time, making it a cost-effective solution for insulation.
  4. Moisture and mold resistance – Rockal Rockwool blanket insulation is resistant to moisture and mold growth, making it a suitable choice for areas with high humidity or damp conditions.
  5. Environmentally friendly – Rockal Rockwool blanket insulation is made from sustainable and renewable materials and can be recycled, making it an environmentally friendly choice.
  6. Easy installation – Rockal Rockwool blanket insulation is easy to install, making it a popular choice for both contractors and DIY enthusiasts.


ROCKAL Rockwool fibers products are classified as Non-Combustible materials and follow the fire safety rating achievements:

Class 1 Surface spread of flame in accordance to BS 476

Class 0 in accordance to BS 476

  • Class A1 in accordance to European standards
  • Surface burning characteristics in accordance to ASTM E-84
  • Fire Spread Index: Less than 10
  • Smoke Developed Index: Less than 25
  • In summary, rockwool blanket insulation is a flexible and versatile insulation solution that offers excellent fire resistance, soundproofing properties, and resistance to moisture and mold. It is an energy-efficient and environmentally friendly option for a wide range of insulation applications.

Thermal Conductivity

Mean Temperature (°C)                                                                                        Thermal conductivity (W/m.k) For the following densities in (Kg/m3) 

Technical Properties

Service Temp. (Hot Side)400°C to 600 C
Melting Temp.1500°C
Outer Facing Temp. Range-29°C to 66°C
Moisture Absorption< 1% (By weight, Water repellant, Non-Hygroscopic, Non-CapillaryNo Effect on Stability
Corrosion ResistancePH 7 or Slightly Alkaline
Soluble Chlorides6 PPM
Fungi ResistanceDoesn’t encourage Fungi growth
Noise Reduction Coefficient (NRC)≈ 0.85
Asbestos ContentNon-Toxic and not hazardous to health and Asbestos FreeDoes not contain:AMPHIBOLE {CA2 MG3(OH)2 SI8 O22} Nor SERPENTINE Asbestos {MG3 SI2 (OH)4 O5}
EnvironmentCFC and HCFC Free
Expansion and ContractionShot ContentCompletely StableLess than 25%    ASTM C-1335
CondensationThe vapor diffusion of Rockal Rockwool is negligible it is considered zero compared to other insulation materials


INSULATION MATERIALS KENYA products – including Rockwool, fiberglass, polyethylene foam, ceramic fiber insulation – specially designed to cope with a variety of conditions including fire resistance, soundproofing and thermal insulation. They are manufactured in the foam of roof insulation boards, slabs, rolls and granulate. Our professionals can be on hand to help facilitate the smooth and speedy installation with local technicians, while the materials used in the build are maintained to the highest safety standards.

Available in a selection of sizes, thicknesses, densities, our innovative products are both durable and effective for the lifetime of your building or industrial application

Our flat roof range maintains its high performance against cold and moisture, while the versatile installation methods of our pitched roof products means you can protect your project with above, in between and below rafter insulation or with easy-to-fit loft floor solutions, to achieve the best results.

Thermal properties

Specially treated thermal insulation materials have optimal insulative properties. Warm air can be trapped inside the home and cold air can be kept out to maintain comfortable temperatures.


The acoustic properties of our soundproofing materials can better contain sound within a building, providing better acoustics for budding rock stars, or keep it outside for high focused office workers and eager students alike.

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