Largely manufactured from recycled glass (e.g. windscreens) and mineral base materials such as sand and without the use of binding agents. The ingredients are melted into molten glass, which is cooled and crushed into a fine powder. The powdered glass is poured into molds and heated (below the melting point) in a "sintering" process that causes the particles to adhere to one another. Next, a small amount of finely ground carbon-black is added and the material is heated in a "cellulation" process. Here, the carbon reacts with oxygen, creating carbon dioxide, which creates the insulating bubbles in the (material). CO2 accounts for more than 99% of the gas in the cellular spaces.
Cellulose insulation is a material made from recycled newspaper. The paper is shredded and inorganic salts, such as boric acid, are added for resistance to fire, mould, insects and vermin. The insulation is installed either blown or damp-sprayed depending on application.
Wood fibre
The success of wood fibre insulation derives from an attractive environmental profile combined with a whole bag of functions including rigid insulation, sheathing and sarking for timber frames, roofs and flooring as well as flexible insulation for studs and rafters.
Wood of course is renewable, it sequesters carbon during its growth and product production is relatively free from pollution. The insulation value of wood fibre boards is not as dimensionally efficient as some of the orthodox petro-chemical materials - but it's no slouch either - typically coming in with a 'k value' range of between 0.038-0.043 W/mK depending on format.
Hemp
Hemp fibres are produced from hemp straw of the hemp plant. Most hemp is imported, but an increasing amount of home-grown crop is becoming available. Hemp grows up to a height of nearly 4 metres within a period of 100-120 days. Because the plants shade the soil, no chemical protection or toxic additives are required for hemp cultivation. The product is composed of, usually, 85% hemp fibre with the ballance made up of polyester binding and 3-5% soda added for fire proofing.
Straw
Straw is an agricultural by-product, the dry stalks of cereal plants, after the grain and chaff have been removed. Straw makes up about half of the yield of cereal crops such asbarley, oats, rice, rye and wheat.
EWI-075 Silicone Render EWI Pro 0.5mm grain 25kg is a self-cleaning long-lasting silicone thin-coat render used as a protective decorative finish to an External Wall Insulation (EWI) system that can be applied by hand using a trowel.
EWI Pro EWI-075 Silicone Render is a polymer-modified flexible ..
EWI-075 Silicone Render EWI Pro 1.0mm grain 25kg is a long-lasting ready-to-use silicone thin-coat render used as a protective decorative finish to an External Wall Insulation (EWI) system that can be applied by hand straight out of the bucket.
EWI Pro EWI-075 Silicone Render is a polymer-modifie..
EWI-075 Silicone Render 1.5mm grain 25kg is the most popular EWI Pro decorative silicone thin-coat render used as a protective finish to an External Wall Insulation (EWI) system that can be applied by hand using a trowel straight out of the bucket.
EWI Pro EWI-075 Silicone Render is a polymer-mod..
EWI-075 EWI Pro Silicone Render 2mm grain 25kg is a decorative silicone thin-coat render used as a protective finish to an External Wall Insulation (EWI) system that can be applied by hand using a trowel straight out of the bucket.
Silicone Render EWI Pro EWI-075 is a polymer-modified flexible an..
EWI-075 Silicone Render 3mm grain is a weatherproof and frost-proof silicone thin-coat render used as a protective and decorative finish to an External Wall Insulation (EWI) system that can be applied by hand using a trowel straight out of the bucket.
Silicone Render EWI Pro EWI-075 25kg is a pol..