Knauf Drywall ...

are one of the UK's leading manufacturers of Plaster, Plasterboard and Drywall Systems.

Knauf plasterboards are manufactured from high quality gypsum, with a purity of not less than 95%. This makes the plasterboards light, strong and easy to cut.

Special additives provide the different boards with excellent specific characteristics.

High quality paper liners provide an excellent backing for plaster or for direct decoration. Stringent quality control procedures apply to the manufacturing process, in full compliance with ISO 9002 and EN520

Bristish Gypsum ...

offer Gyproc modern plasterboards provide high quality linings for today’s buildings. They are available in an unrivalled range of types and sizes, enabling you to select exactly the right product for every application.

Typical Applications ...

Residential

Drylining masonry and timber frame external walls.
Ground floor and upper floor partitions in masonry and timber frame built homes.
Drylining masonry and timber frame separating walls.
Used in the construction of both mid-floor and top-floor ceilings.

Commercial

Partitions in all institutional / commercial and leisure buildings.
Separating walls in all institutional / commercial and leisure buildings.
Ceilings in all institutional / commercial and leisure buildings.

Choose from ...

Knauf Wallboard - 9.5mm, 12.5mm or 15mm x 1,200mm x 2,400mm

is plasterboard with an ivory paper face ideally suited to receive a plaster finish or for direct decoration. Knauf Wallboard complies fully with BS EN520 and is categorised as Type A.

Thermal conductivity = 0.16 W/mK

Thermal Resistance:

9.5mm = 0.06m2 K/W

12.5mm = 0.08m2 K/W

15.0mm = 0.09m2 K/W

Gyproc WallBoard - 12.5mm or 15mm x 1,200mm x 2,400mm

The standard board product with ivory face paper, suitable for most applications where normal fire, structural and acoustic levels are specified. Suitable for direct decoration or Thistle plaster finish.

Thermal conductivity 0.19W/mK

12.5mm = 0.07m2 K/W

15.0mm = 0.08m2 K/W

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Knauf Vapourshield - 12.5mm or 15mm x 1,200mm x 2,400mm

Complete with a metallised polyester foil laminated on the grey paper back.

Vapour Check Performance: 12.5mm Vapourshield = 78.5 MNs/g

Thermal Conductivity = 0.16 W/mK.

Thermal Resistance:

12.5mm = 0.07m2 K/W

15.0mm = 0.09m2 K/W

Knauf Moistureshield - 12.5mm or 15mm x 1,200mm x 2,400mm

Knauf Moistureshield is a high performance plasterboard for use in internal areas of high humidity and temporary external exposure.

Knauf Moistureshield complies fully with BS EN520 and is categorised as Types A, H1, H2.

Thermal Conductivity = 0.24W/mK.

Thermal Resistance:

12.5mm = 0.08m2 K/W

15.0mm = 0.06m2 K/W (Knauf Sound Moistureshield)

Gyproc Duplex WallBoard - 12.5mm or 15mm x 1,200mm x 2,400mm

Where vapour control is required, select the duplex board product with ivory face paper, suitable for most applications where normal fire, structural and acoustic levels are specified. Also suitable for direct decoration or Thistle plaster finish.

Thermal Conductivity 0.19W/mK

12.5mm = 0.41m2 K/W

15.0mm = 0.41m2 K/W

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Knauf Fireshield - 12.5mm or 15mm x 1,200mm x 2,400mm

Knauf Fireshield offers superior fire protection and complies fully with BS EN520 and is categorised as Types A,F.

Thermal Conductivity = 0.24 W/mK .

Thermal Resistance:

12.5mm = 0.05m2 K/W

15.0mm = 0.06m2 K/W

Gyproc FireLine - 12.5mm or 15mm x 1,200mm x 2,400mm

Gypsum plasterboard with glass fibre and other additives in the core. Used in British Gypsum partition, wall lining and ceiling systems to give increased fire protection. Also used for protection to structural steel.

Characteristics: Pink face paper, Brown reverse side paper. Complies with EN 520 – Type F

Thermal Conductivity 0.24W/mK

Thermal Resistance:

12.5mm = 0.05m2 K/W

15.0mm = 0.06m2 K/W

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Knauf Plank - 12.5mm or 15mm x 1,200mm x 2,400mm

Knauf Plank is plasterboard with an ivory paper face ideally suited to receive a plaster finish, or for direct decoration.

Knauf Plank complies fully with BS EN520 and is categorised as Type A.

Thermal Conductivity = 0.16 W/mK

Thermal Resistance: 19.0mm = 0.12m2 K/W

Gyproc Plank - 19mm x 1,200mm x 2,400mm

A 19mm thick version of Gyproc WallBoard. Ivory face paper (tapered edge), Brown face paper (square edge), Brown reverse side paper

Complies with EN 520 – Type A

Thermal Conductivity 0.19W/mK

Thermal Resistance:

15.0mm = 0.10m2 K/W

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Knauf Plasterboards - General Information

Limitations

Plasterboards are not suitable for areas which are subjected to extremes of temperature and humidity.

Temperatures over 50°C can induce a change of state in the plasterboard which would reduce its physical performance and serviceability.

Humidity over 90% (95% If using Knauf moisture resistant boards) or subjection to excessive moisture will also reduce the serviceability of the plasterboard.

Storage on Site

Plasterboards are supplied on timber bearers. Packs should be lifted with a fork-lift truck and stacked not more than one-high on a flat surface to preserve stability.

They should be stored in a clean dry environment.

Health & Safety

Knauf plasterboards must be handled with care; boards must be carried on their edges. When cutting, ensure adequate ventilation.

Knauf Plasterboards are not classified as hazardous under CHIP2 Regulations 1994 and the Control of Substances Hazardous to Health (COSHH) Regulations 1994.

For the latest full Health & Safety datasheets on the specific products, please contact our literature freephone number.

Performance

Fire performance

Gypsum is non-combustible. So, by definition, any of the Knauf plasterboard range is acknowledged to contribute to the fire resistance of the structure in which it is used.

Knauf plasterboards are designated as Class O materials under the Building Regulations 1991, Approved document B. They also meet BS476: Part 6: 1989, with fire propagation index I=12 and under BS476: Part 7: 1987, surface spread of flame, are designated Class 1. Specific Knauf Drywall Systems are fire tested in accordance with BS476: Part 20: 1987.

Acoustic Performance

All Knauf plasterboards offer excellent sound reduction qualities, whether used in drywall systems for ceilings, wall linings, partitions or separating walls. Plasterboard, as a single element, is not normally given a sound reduction figure. Specific Knauf Drywall Systems are tested in full accordance with BS EN ISO 140-3:1995 and the values calculated in accordance with BS EN 717-1:1996

Vapour Performance

Vapour check plasterboards have been tested in accordance with BS3177: 1959 and exceed the minimum requirement of 15MN s/g to meet this standard. 12.5mm Knauf Vapourshield has a water vapour resistance of 78MN s/g.

Sitework

Knauf plasterboards must be installed in full accordance with Knauf’s recommendations and those of BS8212: 1995 and BS8000: Part 8: 1994.

Gyproc Plasterboards - General Information

Acoustic performance

Noise in buildings is not only a nuisance factor but can also significantly reduce comfort and efficiency. Building Regulations Approved Document Part E stipulates minimum levels of acoustic performance for all residential buildings. Areas of other buildings are often specified as having higher levels of acoustic privacy depending on the type of building, location within the building and type of occupancy. Gyproc plasterboards can contribute to providing this superior acoustic performance.

Fire performance

Gypsum plasterboard with glass fibre and other additives in the core. Used in British Gypsum
partition, wall lining and ceiling systems to give increased fire protection. Pink coloured face
paper.
The importance of providing adequate and effective fire protection in buildings cannot be over emphasised. It is crucial that the fire protection requirements for a building are identified and incorporated to ensure that occupants are able to escape the building safely in the event of fire. Gyproc plasterboards can contribute to providing the required fire performance.

Moisture performance

Certain buildings or areas of buildings require extra moisture protection. Gyproc plasterboards can contribute to providing extra moisture resistance.

Gyproc FireLine with water repellent additives in the core, encased in a special pink paper liner. Used in British Gypsum wall and partition systems where both fire protection and moisture resistance are required.

Thermal performance

Heat loss from buildings can mean lower comfort conditions and results in higher fuel bills. Building Regulations Approved Document Part L stipulates minimum levels of thermal performance for external walls, roofs and floors in almost all types of new and
some existing buildings. Gyproc thermal laminates are available in a wide choice of product options meaning that specified U-values can be met.

Check out Gyproc ThermaLine for high performance thermal wallboards

Note: Definitions

The thermal properties of building materials and building elements are defined most commonly by terms and symbols as described below:

Thermal conductivity (λ - Lambda value)

(l) This is a measure of a material’s ability to transmit heat, and is expressed as heat flow in watts per m2 of surface area for temperature gradient of one Kelvin (K) per metre thickness.

It is expressed as W/mK.

Generally, dense materials have high thermal conductivity and are inefficient thermal insulants, whereas lightweight materials have low conductivity and can be efficient thermal insulants.

The lower the (λ - thermal conductivity) value of a material, the better is its insulating efficiency.

Thermal resistance (R)

This is the measure of the resistance to the passage of heat offered by the thickness of a material and is expressed as m2K/W.

The thermal resistance of a material is obtained by the following calculation

R = t (thickness in metres) divided by λ (thermal conductivity)

The higher the resistance of the element the better is its insulating efficiency.

Thermal transmittance (U-value)

The U-value of a building element is a property of its whole construction, including airspaces, and is the measure of its ability to transmit heat under steady state conditions. It is calculated by adding the reciprocal sum of all the individual thermal resistances and is expressed as W/m2K.

The lower the U-value of the element, the better its thermal insulation properties.

Manufacturer

British Gypsum Limited, Drywall Academy Advice Centre,

East Leake, Loughborough, Leicestershire LE12 6JT.

Telephone: 08705 456123 #1 (Literature), #2 (Specifiers), #3 (Merchants), #4 (Contractors)

Fax: 08705 456356 - E-mail: bgtechnical.enquiries@bpb.com

 

Page last updated Tuesday, June 1, 2010