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.
35mm RAWLPLUG R-WW-50T Timber Screw (boxed in 500's) is a specially designed shape and type of the thread screw for connecting to wood structures with TORX25 drive.
Screws for Timber 35mm (Tx25 Drive) is an ideal product for use with timber, plywood, oriented strand board, and chipboard substrate..
35mm RAWLPLUG R-WW-50T
Screws for Timber boxed in 500's
Specially designed shape and type of the thread screw
For connecting to wood structures with TORX25 drive
45mm Timber Screw RAWLPLUG R-WW-50T45 (boxed in 500's) is a specially designed shape and type of the thread screw for connecting to wood structures with TORX25 drive.
Screws for Timber 45mm (Tx25 Drive) is an ideal product for use with timber, plywood, oriented strand board, and chipboard substra..
45mm RAWLPLUG R-WW-50T45
Screws for Timber boxed in 250's
Specially designed shape and type of the thread screw
For connecting to wood structures with TORX25 drive
Timber Screw 55mm RAWLPLUG R-WW-50T55 (boxed in 200's) is a specially designed shape and type of the thread screw for connecting to wood structures with TORX25 drive.
Screws for Timber 55mm (Tx25 Drive) is an ideal product for use with timber, plywood, oriented strand board, and chipboard substra..
55mm RAWLPLUG R-WW-50T55
Screws for Timber boxed in 200's
Specially designed shape and type of the thread screw
For connecting to wood structures with TORX25 drive
Timber Screw 75mm RAWLPLUG R-WW-50T75 (box of 100 screws) is an anti-corrosion coated hardened thread screw designed for connecting materials to wood structures with TORX25 drive.
Screws for Timber 75mm (Tx25 Drive) is an ideal product for use with timber, plywood, oriented strand board, and chip..
75mm RAWLPLUG R-WW-50T75
Screws for Timber boxed in 100's
Specially designed shape and type of the thread screw
For connecting to wood structures with TORX25 drive
RAWLPLUG R-WW-50T95 Screw 95mm (box of 100 screws) is an anti-corrosion coated hardened thread screw designed for connecting materials to wood structures with TORX25 drive.
95mm Screw for Timber (Tx25 Drive) is an ideal product for use with timber, plywood, oriented strand board, and chipboard su..
95mm RAWLPLUG R-WW-50T95
Screws for Timber boxed in 100's
Specially designed shape and type of the thread screw
For connecting to wood structures with TORX25 drive