Rockwool Insulation in Rwanda Mineral Wool Rolls

We supply rockwool insulation across the East African community including Rwanda, Uganda, South Sudan and Tanzania. E-build Kenya partnership with World accredited brands such as Rockwool, Saint Gobain, Knauf Group and other guarantees on-time delivery and product quality.

We stock different types and thicknesses of rockwool insulation to suite different specifications in the construction sector. Our varieties include; rolls and slab insulation for walls, roof, attic and sound absorption.

Rockwool Properties

Sound and Vibrations absorption

The energy of sound waves absorbed by Rock wool fibers due to the crisscrossed fibers and air pockets. This structure makes Rock wool one of the best sound absorbing insulation for building and industrial applications. Besides the advantage of light weight, Rockwool can also be used to control vibrations caused by sources such as traffic, ventilating systems, heavy machines or similar.

Fire Resistance

Rockwool fibers can resist temperatures of over 750°C. Rockwool retains both its thermal conductivity and fire protection capability even when temperatures, as in the case of fire, reach over 900 °C. Therefore, in fire protection applications it should be fixed in such a way as to ensure that they retain their positioning and shape, even after the binder has evaporated because of fire.


The orientation of Rock wool fibers provides very good mechanical properties as well as excellent stability, no thermal expansion or contraction because of the open cell structure. Air pockets allow vapor to get through easily, while also having excellent thermal conductivity. The short fiber length of Rockwool also offers the possibility of making higher density products with a much higher capacity load than other materials.

Water Repellency

That moisture inside insulation reduces thermal conductivity performance. When exposed to water or rain, Rock wool can sometimes look like it is wet throughout. In fact water does not penetrate the product. Even if water is going into the core of Rockwool, after a certain time the water evaporates and the fibers dry out, as the material is itself diffusing. After drying out, the product completely recovers its properties.

Thermal Conductivity

Thermal conductivity λ varies depending on the temperature of the element to be insulated. At normal temperatures Rock wool has a thermal conductivity between 0,035 and 0,040 W/mK. The advantage of Rockwool over other insulation materials is preserving its properties for a long time, even during serious fire. This capability prevents other materials behind the Rock wool from overheating or even self-igniting.

Mineral Wool Neutrality

Mineral wool fibers are inorganic biologically inert materials made out of natural igneous rocks – in addition to sand and silica in case of Glass wool – which forms an unfavorable medium for the growth of fungi, bacteria, vermin, and pests. These fibers are also free of asbestos.

Mineral Wool Durability

Mineral wool fibers consist of natural, chemically-inert fibers forming an open-cell structure that maintains its characteristics with time. That means it is easy handling and hassle-free storage.

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