Polystyrene is a synthetic aromatic polymer made from the monomer styrene. Polystyrene can be solid or foamed. Expanded polystyrene (EPS) is a rigid and tough, closed-cell foam. It is usually white and made of pre-expanded polystyrene beads. Polystyrene is one of the most widely used plastics, the scale of its production being several billion kilograms per year.
Polystyrene foams are produced using blowing agents that form bubbles and expand the foam. In expanded polystyrene, these are usually hydrocarbons such as pentane
Extruded polystyrene (XPS)
Extruded polystyrene foam (XPS) consists of closed cells, offers improved surface roughness and higher stiffness and reduced thermal conductivity. It is slightly denser and therefore slightly stronger than EPS.
Water vapour diffusion resistance (μ) of XPS is very low - making it suitable for application in wetter environments.
Phenolic foam
Phenolic foam insulation is made from a resole resin in the presence of an acid catalyst, blowing agents (such as pentane) and surfactants.
Polyisocyanurate/ Polyurethane foam (PIR/PUR)
Polyurethane (PUR and PU) is a polymer composed of organic units joined by carbamate (urethane) links. Polyurethane can be made in a variety of densities and hardnesses by varying the isocyanate, polyol or additives.
Polyisocyanurate, also referred to as PIR, is a thermoset plastic typically produced as a foam and used as rigid thermal insulation. Its chemistry is similar to polyurethane (PUR) except that the proportion of methylene diphenyl diisocyanate (MDI) is higher and a polyester-derived polyol is used in the reaction instead of a polyether polyol. Catalysts and additives used in PIR formulations also differ from those used in PUR.
Glass mineral wool
Made from molten glass, usually with 20% to 30% recycled industrial waste and post-consumer content. The material is formed from fibres of glass arranged using a binder into a texture similar to wool. The process traps many small pockets of air between the glass, and these small air pockets result in high thermal insulation properties. The density of the material can be varied through pressure and binder content.
Rock mineral wool
Rock (Stone) mineral wool is a furnace product of molten rock at a temperature of about 1600 °C, through which a stream of air or steam is blown. More advanced production techniques are based on spinning molten rock in high-speed spinning heads somewhat like the process used to produce candy floss. The final product is a mass of fine, intertwined fibres with a typical diameter of 2 to 6 micrometers. Mineral wool may contain a binder, often a Ter-polymer, and an oil to reduce dusting
Cellular glass
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.
Wool
Wool insulation is made from sheep wool fibres that are either mechanically held together or bonded using between 5% and 15% recycled polyester adhesive to form insulating batts and rolls. Sheep are no longer farmed primarily for their wool; however, they need to be clipped annually to protect the health of the animal. The wool used to manufacture insulation is the wool discarded as waste by other industries due to its colour or grade
Cellulose
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.
ACOUSTIC PLASTERBOARD ǀ KNAUF ǀ BRITISH GYPSUM ǀ SINIAT
ACOUSTIC PLASTERBOARD
Acoustic plasterboard is designed to provide greater acoustic performance than regular plasterboard. In fact, acoustic boards are’t manufactured to be thicker but simply denser. This improvement comes from the higher density gypsum based core. Sound board is also blue in colour. This is because of the properties infused into the gypsum during the manufacturing process and the colour of the paper lines used to differentiate it from other types of plasterboard which have different properties. Blue plasterboard is approximately 30% heavier than standard wallboard, allowing for a noise reduction of between 30-50 decibels(dB). This soundshield board has a higher mass than standard plasterboard and it is this mass that assists in the reduction of airborne sound transferring from room to room by blocking sound energy. This gives enhanced sound insulation to walls and ceilings. Noise reducing plasterboard can easily control noise disturbance caused by television, loud home sound systems or just general everyday life. It can be used on a party wall ( shared wall in terraced house) to help soundproof the wall from noisy neighbours. Since it handles in the same way as regular plasterboard, it can be easily decorated with plaster finish, paints, wallpapers or any colour you like. Acoustic plasterboard reduces noise markedly, by up to 50 decibels. Even though this plasterboard costs more than normal plasterboard, it is worth buying if you are concerned about noise levels from neighbours or would just like the peace of mind that comes from knowing you will be able to sleep quietly.
ACOUSTIC PLASTERBOARD APPLICATION
Sound absorbing plasterboard is a very popular option in places where there are many bedrooms such as hotels, hostels and halls of residence for students, as the noises are dampened and this allows everyone to get more and better sleep than they otherwise might without the acoustic plasterboard being in place. In older properties, it is ideal as a ceiling between flats or as a wall lining for party walls. For any type of project, it is used to control excessive noise from rooms such as home cinemas, music rooms or music studios. This makes it a very popular building material for lodges and hospitals where many people are sleeping and need peace in order to do so. It can make a real difference to the quality of life in houses of multiple occupation, student accommodation where there is likely to be the sound transfer of a lot of noise, such as snoring or noisy neighbours. Soundproof tapered edge plasterboard can also be used for ceilings in order to reduce noise from above. This can be handy when in flats with upstairs neighbours who may be quite heavy-footed or who may not have much floor insulation in their rooms, leading to every noise becoming an aggravation. Acoustic plasterboard can be installed in exactly the same way as normal plasterboard, by using adhesives or screws. It can also be applied directly using Plasterboard Adhesive.
ACOUSTIC PLASTERBOARD PERFORMANCE
A single layer of acoustic plasterboard will reduce noise by around 45dB as long as you seal all the gaps. A busy restaurant would have a noise level of about 70dB. If you added an extra layer of plasterboard and maybe soundproof foam between it, then almost no noise should get through. A standard stud wall built properly and consisting of 2 sheets of acoustic boards with an air cavity from 5 to 6 inches thick, is good enough to make the wall fully soundproofed.
ACOUSTIC PLASTERBOARD SIZES ǀ MANUFACTURERS
Soundproof plasterboard is exactly the same thickness as normal plasterboard, despite the extra density, so the blue boards can be mixed and matched interchangeably, depending on what your requirements are for the area that you are working on. Acoustic plasterboard can be found as thin as 12.5mm. Either 12.5mm or 15mm is supplied with a tapered or square edge depending on the manufacturer. Our range of acoustic plasterboard features products from industry-leading manufacturers such as British Gypsum, Knauf or Siniat.
Acoustic plasterboard comes in exactly the same thicknesses as normal plasterboard so can be used alongside it without a problem. Available sizes are:
12.5mm x 1200mm x 1200mm (1.44 sqm) HALF SIZE 4’x4’
12.5mm x 2400mm x 1200mm (2.88 sqm) FULL SIZE 8’x4’
12.5mm x 3000mm x 1200mm (3.60 sqm) LONG SIZE 10’x4’
Video credit:https://www.youtube.com/watch?v=yCbnSARV-XE
12.5mm Knauf Sound Panel Acoustic Plasterboard Sound Shield is an enhanced special gypsum tuned core acoustic plasterboard that greatly reduces any noise impact in adjacent rooms, flats, acoustic partition walls or properties.
Knauf Sound Shield Tapered Edge Plasterboard with a Blue Paper Face ha..
22.5mm Isowave 23 Acoustic Wall, Floor and Ceiling Plasterboard is used for soundproofing and to construct or upgrade separating and external walls for conversions and refurbishment projects.
The Isocheck Isowave 23 system (1197mm x 597mm x 22.5mm) is designed for the treatment of excessive flank..
22.5mm Isowave 23 Acoustic Walls, Floors and Ceilings Plasterboard
Used for soundproofing and to construct or upgrade and separating
Isowave 23 is suitable for conversions and refurbishment projects
Isocheck Isowave 23 Acoustic Board (1197mm x 597mm x 22.5mm)
Designed for the treatment of excessive flanking sound that bypasses a separating floor
15mm Sound Shield Acoustic Plasterboard Sound Panel Knauf is a high density enhanced gypsum tuned core acoustic tapered edge plasterboard that greatly reduces any noise impact in adjacent rooms, flats, acoustic partition walls or properties.
Knauf Acoustic Plasterboard with a Blue Paper Face has ..