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Knauf Earthwool Universal (previously Rocksilk) Slabs

Earthwool is the new mineral wool brand from Knauf Insulation, adding the benefits of ECOSE Technology - a revolutionary bio-based binder technology – to create a new kind of mineral wool insulation that is naturally brown. It offers significant improvements in terms of feel, handling and environmental performance, while still delivering the outstanding performance you expect from our traditional mineral wool

Knauf Universal slab products offer a wide range of benefits, and can be used in an equally wide range of applications.

Knauf Universal rock mineral wool slabs offer exceptional fire performance characteristics, as well as excellent thermal and acoustic properties rock mineral wool is made mainly from volcanic rock, typically basalt and/or dolomite. An increasing proportion is now recycled material from slag, a waste product from blast furnaces.

The materials are melted and then spun into fine fibres. A resin is used to bind the fibres together to form a mat of insulation.

New! ... Ecose™ Technology

Knauf Insulation mineral wool products benefit from a formaldehyde-free binder made from rapidly renewable bio-based materials instead of petroleum-based chemicals which is up to 70% less energy intensive.

The technology has been developed for Knauf Insulation's glass and rock mineral wool products, enhancing their environmental credentials without affecting the thermal, acoustic or fire performance.

Insulation products made with ECOSE® Technology contain no dye or artificial colours, and the colour is completely natural.

Knauf Universal Slabs

Main characteristics

Available in the form of slabs, rolls and mattresses

Short fibre - compressive strength

Suitable for temperatures up to 850°C

Non-combustible

Denser than glass mineral wool.

High compressive strength

Commonly used for

Sound insulation for floors and walls

Thermal insulation of flat roofs, rainscreen façades and external wall insulation

Fire protection, including smoke and fire barriers

High temperature applications

Knauf Universal Slab Uses

For a wide range of thermal and acoustic insulation applications in buildings, building services and industry

Description

Universal Slabs are unfaced, rock mineral wool slabs, available in a range of densities from 33 to 200 kg/m3. The standard product is supplied unfaced, but slabs can also be manufactured with a factory applied foil or tissue facing and are also available with a water repellent additive.

Application

Universal Slabs are used for a wide range of thermal and acoustic insulation applications in buildings, building services and industry. Standards Universal Slabs are made from non-combustible inorganic rock wool, defined as mineral wool in BS 3533: 1981 and are manufactured to a Quality Assurance system which complies with BS EN ISO 9001:2000.

Durability

Universal Slabs are odourless, non-hygroscopic, rot proof, do not sustain vermin and will not encourage the growth of fungi, mould or bacteria.

Environmental

Universal Slabs are free from CFCs, HCFCs and any other material with ozone depletion potential in their manufacture and content and represent no known threat to the environment. Universal Slab’s manufacture has a low impact on the environment and is classified as Zero ODP and Zero GWP.

Fire Performance

Universal Slabs are classified as non-combustible to BS 476: Part 4: 1970 (1984) and Euroclass A1, Class 1 Surface Spread of Flame to BS 476: Part 7 1997 and Class ‘O’ to the Building Regulations.

Moisture Resistance

Universal Slabs are non-wicking when tested to BS 2972: 1989: Section 12. When exposed to 90% relative humidity at 20°C, Universal Slabs absorb less than 0.004% of moisture.

Vapour Resistance

Universal Slabs have a vapour resistance of 7.00 MN.s/g.m

Operating Temperatures

Universal Slabs can be used up to continuous operating temperatures of 850°C. This is dependent on density.

Handling and Storage

Universal Slabs are easy to handle and install, being lightweight and easy to cut to size.

Universal Slabs are supplied in packs in Supakube pallets.

For longer term outside storage (stock or site) the pallets should be stored under a secure waterproof covering.

Universal Slabs should not be left permanently exposed to the elements.

Product Data

Universal Slab RS33

Thickness (mm)	Thermal conductivity (W/mK)	Thermal resistance (m2K/W)	Slab Size (mm)	Slabs per Pack	Area per Pack (m2)
100	0.037	2.70	1200 x 600	5	3.60
70	0.037	1.89	1200 x 600	8	5.76
60	0.037	1.60	1200 x 600	8	5.76
50	0.037	1.35	1200 x 600	10	7.20
40	0.037	1.05	1200 x 600	12	8.64
30	0.037	0.80	1200 x 600	18	12.96

All Dimensions are nominal

 

Universal Slab RS45

Thickness (mm)	Thermal conductivity (W/mK)	Thermal resistance (m2K/W)	Slab Size (mm)	Slabs per Pack	Area per Pack (m2)
100	0.035	2.85	1200 x 600	5	3.60
75	0.035	2.10	1200 x 600	6	4.32
60	0.035	1.70	1200 x 600	8	5.76
50	0.035	1.40	1200 x 600	10	7.20
40	0.035	1.10	1200 x 600	12	8.64
30	0.035	0.85	1200 x 600	16	11.52
25	0.035	0.70	1200 x 600	20	14.40

All Dimensions are nominal

 

Universal Slab RS60

Thickness (mm)	Thermal conductivity (W/mK)	Thermal resistance (m2K/W)	Slab Size (mm)	Slabs per Pack	Area per Pack (m2)
100	0.035	2.85	1200 x 600	4	2.88
75	0.035	2.10	1200 x 600	6	4.32
60	0.035	1.70	1200 x 600	7	5.04
50	0.035	1.40	1200 x 600	9	6.48
40	0.035	1.10	1200 x 600	11	7.92
30	0.035	0.85	1200 x 600	14	10.08
25	0.035	0.70	1200 x 600	18	12.96

All Dimensions are nominal

 

Knauf Universal Slab RS80, RS100, RS128, RS140, RS200

These Universal Slabs are available, but not commonly used by our main markets. We can make these items available to our customers ... at the very best prices, as usual. However, there may ba a short lead time, and minimum order requirements.

Manufacturer

Knauf Insulation Ltd, PO Box 10, Stafford Road, St Helens, Merseyside, WA10 3NS

Technical Advisory Tel: 01744 766666 Fax: 01744 766667 Email: tech@knaufinsulation.com