Knauf Earthwool® Flexible Slab

Is a multi-purpose thermal and acoustic insulation slab specifically designed for installation
by friction fitting.

Application

For general thermal and acoustic insulation, use in applications such as internal partitions,
between timber and metal studs, rafters and floor joists.

Benefits

Friction fits between rafters, joists and studs
Provides excellent thermal and acoustic performance
Multiple application solution

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.

Thermal Performance

Thermal Performance Earthwool® Flexible Slab 140mm has a thermal conductivity of 0.035 W/mK. Other thickness have a thermal conductivity of 0.037 W/mK.

Fire Performance

Earthwool® Flexible Slab is classified as Euroclass A1 to BS EN ISO 13501-1.

 

Product Data

Thickness   140 100 90 70 60 50

Thermal conductivity (W/mK) 0.035 0.037 0.037 0.037 0.037 0.037

Thermal resistance (m2K/W) 4.00 2.70 2.40 1.85 1.60 1.35

Slab Size (mm) 1200 x 600 1200 x 600 1200 x 600 1200 x 600 1200 x 600 1200 x 600

Slabs per Pack   3 5 5 8 8 10

Area per Pack (m2)   2.16 3.60 3.60 5.76 5.76 7.20

All dimensions are nominal

Standards

Earthwool® Flexible Slab is made from non-combustible, inorganic rock mineral wool,
defined as mineral wool in BS 3533:1981, manufactured in accordance with BSI Quality
Assurance Standard BS EN ISO 9001:2000 and Product Standard EN 13162.

Durability

Earthwool® Flexible Slab is odourless, non-hygroscopic, rot proof, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria.

Environmental

Earthwool® Flexible Slab is free from CFCs, HCFCs and any other material with ozone depletion potential in its manufacture and content and represents no known threat to the environment.

Earthwool® Flexible Slab’s manufacture has a low impact on the environment and is classified as Zero ODP and Zero GWP.

Handling and Storage

Earthwool® Flexible Slab is easy to handle and install, being lightweight and easily cut to size.

Earthwool® Flexible Slab is supplied in weatherproof Supakube packaging, on non-returnable wooden pallets. This makes Earthwool® Flexible Slab very easy to unload and ideal for outside storage, which frees up internal stock space.

Earthwool® Flexible Slab should not be left permanently exposed to the elements.

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

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Rockwool SoundPro Flexi

Rockwool Flex-i the ingenious volcanic rock slab with the patented flexi-edge that makes installation so easy.

The flexi-edge is unique and ensures a perfect fit every time, within floor joists, between rafters, metal and timber studs and metal and timber frame buildings.

Unlike rigid insulants, Rockwool Flexi will hold itself within the stud centres required, first time, every time.

Timber expands and contracts, Rockwool Flexi can be fitted between damp timber and will expand into the wider space created when the timber has dried out and shrunk back.

Other rigid or very flimsy insulants may fall out or be displaced, resulting in cold spots and poor acoustics.

Features & benefits

• unique ‘flexi’ edge offers accurate fit to all widths

• multi-application, fits all typical timber frame spacing

• excellent thermal, acoustic and fire properties

• easy to handle and install without gaps . no waste

Rockwool ‘Flexi’ is a unique insulation product with a patented flexible edge along one side.

This unique Flexi edge is produced using patented technology to ensure a perfect fit is maintained between the product and its supporting framework. This ensures the insulation’s integrity.

Flexi is designed for a host of applications where perfect fitting insulation is essential, in walls, partitions, floors and roofs. The ‘Flexi’ edge allows the product to be tightly fitted between timber and metal frames, without the need for cutting or waste.

Advantages

• patented ‘Flexi’ edge offers accurate fit to all widths

• will not slump if studs shrink

• multi-application, fits all typical metal and timber frame spacing

• no waste

• excellent thermal, acoustic and fire properties

• easy to handle and install without gaps

Description, performance and properties

Rockwool SoundPro Flexi is a unique semi-rigid slab with a flexible edge along one side.

The Flexi product is now available 1200 mm long × 600 mm wide and 1200 mm long × 400 mm wide, to suit standard stud and floor joist spacings.

Product Dimensions available from us

Length × Width	Available thickness (mm)
1200 mm × 600mm	25, 50, 75, 100

Importance of fit

Ensuring a perfect insulation fit is essential to maintain the thermal integrity of the wall. Typical softwood timber moisture contents can range between 6% and 30%, dependant on exposure to the elements. As a rule of thumb, timber will expand 1% for every 4% of moisture content.

A 100 × 47 mm timber stud can therefore expand 3 × 2 mm (each side) and then shrink back. If insulation is installed when timber has high moisture content, it can result in a potential 6 mm vertical void on each side.

When the timber dries out, Rockwool SoundPro Flexi will expand into this void, ensuring thermal integrity, whilst rigid insulations may leave a 6 mm gap, or even fall out.

The flexible long edge of the slab allows for the 600 mm wide product to be flexed into the 590 mm space between metal studs or into the 562 mm space between 38 mm width timber studs (see figs. 1 & 2). Where studs are spaced at 400 mm centres, 1200 mm × 400 mm wide Rockwool SoundPro Flexi should be used.

Performance & properties

Fire Classification Rockwool SoundPro Flexi achieves a reaction to Fire classification of A1, as defined in EN13501-1.

Thermal Performance

Rockwool SoundPro Flexi has a thermal conductivity of 0.038 W/mK when tested to EN13162. At 140 mm thickness, Rockwool SoundPro Flexi has a thermal conductivity of 0.035W/mK.

Work on site - Handling and storage

Rockwool SoundPro Flexi Slabs are light and easy to cut to any shape with a sharp knife. They are shrink wrapped in polyethylene for short term protection. For long term protection they should be stored indoors or under a waterproof covering.

Maintenance

Once installed Rockwool SoundPro Flexi needs no maintenance. Rockwool SoundPro Flexi is designed to provide the perfect friction fit between both timber and metal framed systems. Its unique flexible edge allows the product to be pushed into the space from one side and then simply let go, springing back to fill the gap. Unlike rigid insulants, if the timber stud contracts as a result of moisture content, Rockwool SoundPro Flexi will expand to fill the void, not drop out or leave vertical gaps.

Manufacturer

Rockwool Limited, Pencoed, Bridgend, South Wales, CF35 6NY United Kingdom

Tel: 01656 862621 - Fax: 01656 862302 - Email: info@rockwool.co.uk