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.
12.5mm Knauf Vapour Panel Foil Backed Plasterboard is a strong vapour check laminated plasterboard with a metallised polyester foil laminate on the grey colour paper back for lining external walls and roofs.
Foil Backed Plasterboard is a combination of standard wallboard and laminate with metalli..
Novia VC2 is an innovative, flame resistant, scrim reinforced and airtight vapour check membrane for use in insulated walls, floors and roofs.
Air Leakage and Vapour Control Layer is a extra tough material providing good tensile and nail tear strength.
It is lightweight and easy to handle and ..
15mm Foil Backed Plasterboard Knauf Vapour Panel is a laminated vapour check plasterboard with a metallised polyester foil laminate on the grey colour paper back to block water vapour, used for lining external walls and roofs.
Vapour Panel Knauf 15mm x 1200mm x 2400mm is one of the most cost effe..
Novia VC200 Reflective Air Leakage AVCL is an innovative, highly reflective airtight with low emissivity surface vapour control layer which helps to prevent interstitial condensation problems and boost the insulation performance.
Its 95% reflective surface will help to keep the building warmer in..
A highly reflective airtight vapour-control layer (AVCL)