Glass wool is an insulating material made from fibres of glass arranged using a binder into a texture similar to wool.Natural sand and recycled glass are mixed and heated to 1,450 °C, to produce glass. The fiberglass is usually produced by a method similar to making cotton candy, by forcing it through a fine mesh by centripetal force, cooling on contact with the air. Cohesion and mechanical strength are obtained by the presence of a binder that “cements” the fibers together. A drop of binder is placed at each fiber intersection. The fiber mat is then heated to around 200 °C to polymerize the resin and is calendered to give it strength and stability. Finally, the wool mat is cut and packed in rolls or panels, palletized, and stored for use.

Batts are precut, whereas blankets are available in continuous rolls. Compressing the material reduces its effectiveness. Cutting it to accommodate electrical boxes and other obstructions allows air a free path to cross through the wall cavity. One can install batts in two layers across an unfinished attic floor, perpendicular to each other, for increased effectiveness at preventing heat bridging. Blankets can cover joists and studs as well as the space between them. Batts can be challenging and unpleasant to hang under floors between joists; straps, or staple cloth or wire mesh across joists, can hold it up.

Gaps between batts (bypasses) can become sites of air infiltration or condensation (both of which reduce the effectiveness of the insulation) and requires strict attention during the installation. By the same token careful weatherization and installation of vapour barriers is required to ensure that the batts perform optimally. Air infiltration can be also reduced by adding a layer of cellulose loose-fill on top of the material.

Glass wool is made from silica sand to which recycled glass (cullet) and fluxing agents are added. The material is melted to 1100°C in an electric furnace and then conditioned in a gasfired forehearth. The fibre is formed by centrifugation through drilled circular baskets, where after, binding products and elements specific to the usage are added. No CFC`s or HCFC`s are produced in the production process. The fibres are gathered in a mat form in a collection chamber and then conveyed to an oven where it is cured under controlled conditions to the required thickness and density.

Once complete the product is then packaged in roll or batt form, and our patented process means that thanks to glass wool`s elastic properties, it can be compressed by a factor of up to 10 which saves on storage and reduces transport costs.

Glass wool insulation products are manufactured to be applied in multiple areas of buildings. Glass wool is most commonly known for insulation in ceilings of residential buildings, but we also offer products for the following applications:Cavity wall and dry wall insulation HVAC and Air-conditioning system insulations Pipe insulation Over purlin roof insulation in commercial buildings Suspended ceilings Industrial roof insulation Higher temperature insulations High performance sound proofing