Plasterboard consists of gypsum plaster sandwiched between x 2 layers of thick paper. It is usually fixed to walls and ceilings. Plasterboard can be plastered over or painted. Using plasterboard as a wall finish can be much cheaper than wet plastering. The most common thicknesses for plasterboard are 9.5mm and 12.5mm. Larger sheets of plasterboard come in 8ft x 4f sheets. They can come in 15 & 19mm thicknesses also and have a variety of specified uses.
Common types of plasterboard
Wall board is suitable for most applications where normal sound levels, structural properties and fire specifications are found. It can be fixed at a double thickness to give greater assistance with fire and sound levels.
Vapour barrier board has a thin metallic film on the reverse sheet. This film stops warm vapours passing through the board which could lead to condensation when passed through to a colder surface.
Acoustic board has a higher density core providing a good level of sound insulation. It is effective on thin walls and ceilings making it useful in blocks of flats. It is most often used in conjunction with mineral wool and various sound proofing fixing methods such as resilient bars which keep the surface of the board slightly away from the surface. It is usually a blue colour.
Fire board has glass fibre and other additives in the core to protect against fire in most domestic situations. Usually fire resistant plasterboard comes with a pink face which can be plastered or painted.
Water resistant board has water repellent additives in the core making them suitable for a base for tiling some wet areas. This type of plasterboard usually comes with a green face and is not usually plasterboard. They are good for high humidity areas but, as all gypsum plasters soak up moisture quickly, it would be counter-productive to plaster them.
Impact board which has a very dense core is designed to resist impact and day to day knocks. This board is usually yellow.
4-in-1 Plasterboard With recent developments in technology some manufacturers now produce plasterboard that features not only the ability to be used as a normal wall board, but are also water proof, fire resistant and impact proof.