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.
50mm Kingspan Kooltherm® Cavity Closer (KKCC 50) is a premium performance insulated cavity closer with a fibre-free rigid thermoset phenolic core designed for closing cavities around masonry wall openings in England and Wales only.
Kingspan Kooltherm Cavity Closer 50mm is compatible with uPVC, ti..
50mm Kingspan Kooltherm® Cavity Closer (KKCC 50)
Premium performance uPVC insulated cavity closer
Designed for closing cavities around masonry wall openings
Thermal conductivity of 0.022 W/mK - 2400mm lengths
Suitable for use in both new build and refurbishment projects
Kingspan Kooltherm® Cavity Closer (KKCC 75) is a 75mm uPVC insulated cavity closer with a premium performance fibre-free rigid thermoset phenolic core designed for closing cavities around masonry wall openings (England and Wales).
75mm Cavity Closer Kingspan Kooltherm is compatible with uPVC, ti..
75mm Kingspan Kooltherm® Cavity Closer (KKCC 75)
Premium performance uPVC insulated cavity closer
Designed for closing cavities around masonry wall openings
Thermal conductivity of 0.022 W/mK - 2400mm lengths
Suitable for use in both new build and refurbishment projects
100mm Kingspan Kooltherm® Cavity Closer (KKCC 100) is an insulated cavity closer with a premium performance fibre-free rigid thermoset phenolic core designed for closing cavities around masonry wall openings in England and Wales.
Kingspan Kooltherm Cavity Closer 100mm is compatible with uPVC, tim..
Cavity Closer 110mm Kingspan Kooltherm® (KKCC 110) comprises a PVCu J-section with a premium performance fibre-free rigid thermoset phenolic insulation core designed for closing cavities around masonry wall openings in England and Wales.
Kingspan Kooltherm Cavity Closer 110mm is compatible with..
Kingspan Kooltherm Cavity Closer 125mm (KKCC 125) is an extrusion of PVCU with a premium performance fibre-free rigid thermoset phenolic core designed for closing cavities around masonry wall openings in England and Wales.
Cavity Closer Kingspan Kooltherm is compatible with uPVC, timber, metal an..
The 150mm Kingspan Kooltherm® Cavity Closer (KKCC 150) is a cavity closer J-section comprising a PVCU extrusion with a premium performance rigid phenolic insulation core that can be fitted with door and window frames as a combined unit.
Kooltherm Cavity Closer 150mm x 2400mm provides a simple a..