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Product Information

Rockwool Flexi and Universal Flexi Slabs

Universal Flexi and Rockwool Soundpro Flexi are rock insulation products with a flexible edge along one side.
The Flexi edge is produced to ensure a perfect fit is maintained between the product and its supporting framework.

Rocksilk Flexible Slab is cut to friction fit between joists. The insulation should rest on the ceiling, between the last joist and the wall, cut insulation to size and friction fit in the gapUniversal Flexible Slab

This flexi-edged slab is ideal for framed constructions and for general thermal and acoustic insulation.

Description

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

Thermal Performance

Thermal Performance Universal 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

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

Benefits

Can be used for a wide variety of jobs including partitions and separating walls
Friction fits between rafters/joists etc
Provides excellent thermal and acoustic performance
Moisture tolerant

Application

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

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

Universal 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.

Durability

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

Environmental

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

Handling and Storage

Universal Flexible Slab is easy to handle and install, being lightweight and easily cut to size.
Universal Flexible Slab is supplied in weatherproof Supakube packaging, on non-returnable wooden pallets. This makes Universal Flexible Slab very easy to unload and ideal for outside storage, which frees up internal stock space.
Universal 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, England
Technical Advisory Tel: +44 (0) 1744 766666 Fax: +44 (0) 1744 766667
Email: tech@knaufinsulation.com - Internet: www.knaufinsulation.com

Rockwool SoundPro Flexi

A part of the Rockwool SoundPro range ... Rockwool ‘Flexi’ is a unique insulation product with a patented flexible edge along one side for framed constructions.

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 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

600mm × 1200mm - Available thickness 25, 50, 75, and 100mm

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 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 Flexi should be used.

Performance & properties

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

Thermal Performance

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

Work on site - Handling and storage

Rockwool 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 Flexi needs no maintenance. Rockwool 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 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: +44(0) 1656 862621 - Fax: +44 (0) 1656 862302
Email: info@rockwool.com - Internet: www.rockwool.com

Downloads - select from drop-down menu below


Manufacturer's Contact Details

Universal, Knauf Insulation Ltd.
Tel: +44 (0) 1744 766666 Fax: +44 (0) 1744 766667
Rockwool Limited, Pencoed, Bridgend, CF35 6NY, Wales
Tel: +44(0) 1656 862621 - Fax: +44 (0) 1656 862302

This page was last updated

Monday December 5, 2011

Universal Flexi Slabs from as little as £2.59m² - £1.87 per slab

Select required items by ticking the appropriate tick-boxes
Select the "Go to Shopping Cart - Add Quantities" button,
then add the required quantities on the shopping cart page.

Earthwool® Flexible Slab 50mm, 10 x 0.6x1.2m = 7.2m²

1 plus packs @ £2.25 per m² / £1.62 per slab = £16.19 (£19.43 Inc-VAT)
13 plus packs @ £2.23 per m² / £1.61 per slab = £16.05 (£19.26 Inc-VAT)
26 plus packs @ £2.21 per m² / £1.60 per slab = £15.91 (£19.10 Inc-VAT)
39 plus packs @ £2.20 per m² / £1.58 per slab = £15.77 (£18.93 Inc-VAT)
52 plus packs @ £2.18 per m² / £1.57 per slab = £15.63 (£18.76 Inc-VAT)
65 plus packs @ £2.16 per m² / £1.55 per slab = £15.49 (£18.59 Inc-VAT)

Earthwool® Flexible Slab 60mm, 8 x 0.6x1.2m = 5.76m²

1 plus packs @ £2.68 per m² / £1.93 per slab = £15.39 (£18.47 Inc-VAT)
14 plus packs @ £2.65 per m² / £1.91 per slab = £15.25 (£18.30 Inc-VAT)
27 plus packs @ £2.63 per m² / £1.89 per slab = £15.12 (£18.15 Inc-VAT)
41 plus packs @ £2.61 per m² / £1.88 per slab = £14.98 (£17.98 Inc-VAT)
54 plus packs @ £2.58 per m² / £1.86 per slab = £14.85 (£17.82 Inc-VAT)
68 plus packs @ £2.56 per m² / £1.84 per slab = £14.72 (£17.67 Inc-VAT)

Earthwool® Flexible Slab 70mm, 8 x 0.6x1.2m = 5.76m²

1 plus packs @ £3.10 per m² / £2.23 per slab = £17.82 (£21.39 Inc-VAT)
12 plus packs @ £3.07 per m² / £2.21 per slab = £17.66 (£21.20 Inc-VAT)
23 plus packs @ £3.04 per m² / £2.19 per slab = £17.51 (£21.02 Inc-VAT)
35 plus packs @ £3.02 per m² / £2.17 per slab = £17.35 (£20.82 Inc-VAT)
47 plus packs @ £2.99 per m² / £2.15 per slab = £17.20 (£20.64 Inc-VAT)
59 plus packs @ £2.96 per m² / £2.13 per slab = £17.04 (£20.45 Inc-VAT)

Earthwool® Flexible Slab 90mm, 5 x 0.6x1.2m = 3.6m²

1 plus packs @ £3.88 per m² / £2.80 per slab = £13.96 (£16.76 Inc-VAT)
15 plus packs @ £3.85 per m² / £2.77 per slab = £13.83 (£16.60 Inc-VAT)
30 plus packs @ £3.81 per m² / £2.75 per slab = £13.71 (£16.46 Inc-VAT)
45 plus packs @ £3.78 per m² / £2.72 per slab = £13.59 (£16.31 Inc-VAT)
60 plus packs @ £3.75 per m² / £2.70 per slab = £13.47 (£16.17 Inc-VAT)
75 plus packs @ £3.71 per m² / £2.67 per slab = £13.35 (£16.02 Inc-VAT)

Earthwool® Flexible Slab 100mm, 5 x 0.6x1.2m = 3.6m²

1 plus packs @ £4.29 per m² / £3.09 per slab = £15.43 (£18.52 Inc-VAT)
14 plus packs @ £4.25 per m² / £3.06 per slab = £15.30 (£18.36 Inc-VAT)
27 plus packs @ £4.22 per m² / £3.04 per slab = £15.16 (£18.20 Inc-VAT)
40 plus packs @ £4.18 per m² / £3.01 per slab = £15.03 (£18.04 Inc-VAT)
54 plus packs @ £4.14 per m² / £2.98 per slab = £14.89 (£17.87 Inc-VAT)
68 plus packs @ £4.10 per m² / £2.96 per slab = £14.76 (£17.72 Inc-VAT)

Earthwool® Flexible Slab 140mm, 3 x 0.6x1.2m = 2.16m²

1 plus packs @ £6.02 per m² / £4.33 per slab = £12.99 (£15.59 Inc-VAT)
16 plus packs @ £5.97 per m² / £4.30 per slab = £12.88 (£15.46 Inc-VAT)
32 plus packs @ £5.91 per m² / £4.26 per slab = £12.76 (£15.32 Inc-VAT)
48 plus packs @ £5.86 per m² / £4.22 per slab = £12.65 (£15.18 Inc-VAT)
64 plus packs @ £5.81 per m² / £4.18 per slab = £12.54 (£15.05 Inc-VAT)
81 plus packs @ £5.75 per m² / £4.14 per slab = £12.42 (£14.91 Inc-VAT)

Rockwool Flexi 50mm, 12 x 0.6x1.2m = 8.64m² (Density = 33-36kg/m³)

1 plus packs @ £2.63 per m² / £1.89 per slab = £22.65 (£27.18 Inc-VAT)
9 plus packs @ £2.60 per m² / £1.88 per slab = £22.45 (£26.94 Inc-VAT)
18 plus packs @ £2.58 per m² / £1.86 per slab = £22.25 (£26.70 Inc-VAT)
28 plus packs @ £2.56 per m² / £1.84 per slab = £22.06 (£26.48 Inc-VAT)
37 plus packs @ £2.54 per m² / £1.83 per slab = £21.86 (£26.24 Inc-VAT)
47 plus packs @ £2.51 per m² / £1.81 per slab = £21.66 (£26.00 Inc-VAT)

Rockwool Flexi 60mm, 12 x 0.6x1.2m = 8.64m² (Density = 33-36kg/m³)

1 plus packs @ £3.20 per m² / £2.30 per slab = £27.58 (£33.10 Inc-VAT)
8 plus packs @ £3.17 per m² / £2.28 per slab = £27.34 (£32.81 Inc-VAT)
15 plus packs @ £3.14 per m² / £2.26 per slab = £27.10 (£32.52 Inc-VAT)
23 plus packs @ £3.11 per m² / £2.24 per slab = £26.86 (£32.24 Inc-VAT)
31 plus packs @ £3.09 per m² / £2.22 per slab = £26.62 (£31.95 Inc-VAT)
38 plus packs @ £3.06 per m² / £2.20 per slab = £26.38 (£31.66 Inc-VAT)

Rockwool Flexi 70mm, 8 x 0.6x1.2m = 5.76m² (Density = 33-36kg/m³)

1 plus packs @ £4.08 per m² / £2.94 per slab = £23.47 (£28.17 Inc-VAT)
9 plus packs @ £4.04 per m² / £2.91 per slab = £23.27 (£27.93 Inc-VAT)
18 plus packs @ £4.01 per m² / £2.89 per slab = £23.06 (£27.68 Inc-VAT)
27 plus packs @ £3.97 per m² / £2.86 per slab = £22.86 (£27.44 Inc-VAT)
36 plus packs @ £3.94 per m² / £2.84 per slab = £22.65 (£27.18 Inc-VAT)
45 plus packs @ £3.90 per m² / £2.81 per slab = £22.45 (£26.94 Inc-VAT)

Rockwool Flexi 90mm, 6 x 0.6x1.2m = 4.32m² (Density = 33-36kg/m³)

1 plus packs @ £4.57 per m² / £3.29 per slab = £19.70 (£23.64 Inc-VAT)
11 plus packs @ £4.52 per m² / £3.26 per slab = £19.52 (£23.43 Inc-VAT)
21 plus packs @ £4.48 per m² / £3.23 per slab = £19.35 (£23.22 Inc-VAT)
32 plus packs @ £4.44 per m² / £3.20 per slab = £19.18 (£23.02 Inc-VAT)
43 plus packs @ £4.41 per m² / £3.17 per slab = £19.01 (£22.82 Inc-VAT)
54 plus packs @ £4.37 per m² / £3.14 per slab = £18.84 (£22.61 Inc-VAT)

Rockwool Flexi 100mm, 6 x 0.6x1.2m = 4.32m² (Density = 33-36kg/m³)

1 plus packs @ £5.20 per m² / £3.74 per slab = £22.43 (£26.92 Inc-VAT)
9 plus packs @ £5.15 per m² / £3.71 per slab = £22.24 (£26.69 Inc-VAT)
19 plus packs @ £5.11 per m² / £3.68 per slab = £22.04 (£26.45 Inc-VAT)
28 plus packs @ £5.06 per m² / £3.65 per slab = £21.85 (£26.22 Inc-VAT)
37 plus packs @ £5.02 per m² / £3.61 per slab = £21.65 (£25.98 Inc-VAT)
47 plus packs @ £4.97 per m² / £3.58 per slab = £21.46 (£25.76 Inc-VAT)

Rockwool Flexi 120mm, 6 x 0.6x1.2m = 4.32m² (Density = 33-36kg/m³)

1 plus packs @ £5.41 per m² / £3.89 per slab = £23.34 (£28.01 Inc-VAT)
9 plus packs @ £5.36 per m² / £3.86 per slab = £23.14 (£27.77 Inc-VAT)
18 plus packs @ £5.32 per m² / £3.83 per slab = £22.94 (£27.53 Inc-VAT)
27 plus packs @ £5.27 per m² / £3.79 per slab = £22.74 (£27.29 Inc-VAT)
36 plus packs @ £5.22 per m² / £3.76 per slab = £22.53 (£27.04 Inc-VAT)
45 plus packs @ £5.17 per m² / £3.73 per slab = £22.33 (£26.80 Inc-VAT)

Rockwool Flexi 140mm, 4 x 0.6x1.2m = 2.88m² (Density = 33-36kg/m³)

1 plus packs @ £7.29 per m² / £5.25 per slab = £20.97 (£25.17 Inc-VAT)
10 plus packs @ £7.22 per m² / £5.20 per slab = £20.78 (£24.94 Inc-VAT)
20 plus packs @ £7.16 per m² / £5.15 per slab = £20.60 (£24.72 Inc-VAT)
30 plus packs @ £7.10 per m² / £5.11 per slab = £20.42 (£24.51 Inc-VAT)
40 plus packs @ £7.03 per m² / £5.06 per slab = £20.24 (£24.29 Inc-VAT)
50 plus packs @ £6.97 per m² / £5.02 per slab = £20.05 (£24.06 Inc-VAT)

Rockwool Flexi 50mm, 12 x 0.4x1.2m = 5.76m² (Density = 33-36kg/m³)

1 plus packs @ £2.91 per m² / £1.40 per slab = £16.76 (£20.12 Inc-VAT)
13 plus packs @ £2.89 per m² / £1.39 per slab = £16.61 (£19.94 Inc-VAT)
25 plus packs @ £2.86 per m² / £1.38 per slab = £16.47 (£19.77 Inc-VAT)
37 plus packs @ £2.84 per m² / £1.36 per slab = £16.32 (£19.59 Inc-VAT)
50 plus packs @ £2.81 per m² / £1.35 per slab = £16.18 (£19.42 Inc-VAT)
63 plus packs @ £2.79 per m² / £1.34 per slab = £16.03 (£19.24 Inc-VAT)

Rockwool Flexi 60mm, 12 x 0.4x1.2m = 5.76m² (Density = 33-36kg/m³)

1 plus packs @ £3.60 per m² / £1.73 per slab = £20.70 (£24.84 Inc-VAT)
10 plus packs @ £3.57 per m² / £1.71 per slab = £20.52 (£24.63 Inc-VAT)
20 plus packs @ £3.54 per m² / £1.70 per slab = £20.34 (£24.41 Inc-VAT)
30 plus packs @ £3.50 per m² / £1.68 per slab = £20.16 (£24.20 Inc-VAT)
41 plus packs @ £3.47 per m² / £1.67 per slab = £19.98 (£23.98 Inc-VAT)
51 plus packs @ £3.44 per m² / £1.65 per slab = £19.80 (£23.76 Inc-VAT)

Rockwool Flexi 100mm, 6 x 0.4x1.2m = 2.88m² (Density = 33-36kg/m³)

1 plus packs @ £5.80 per m² / £2.79 per slab = £16.70 (£20.04 Inc-VAT)
13 plus packs @ £5.75 per m² / £2.76 per slab = £16.55 (£19.86 Inc-VAT)
25 plus packs @ £5.70 per m² / £2.74 per slab = £16.41 (£19.70 Inc-VAT)
37 plus packs @ £5.65 per m² / £2.71 per slab = £16.26 (£19.52 Inc-VAT)
50 plus packs @ £5.60 per m² / £2.69 per slab = £16.12 (£19.35 Inc-VAT)
63 plus packs @ £5.55 per m² / £2.67 per slab = £15.97 (£19.17 Inc-VAT)

Rockwool Flexi 140mm, 4 x 0.4x1.2m = 1.92m² (Density = 33-36kg/m³)

1 plus packs @ £8.13 per m² / £3.90 per slab = £15.60 (£18.72 Inc-VAT)
13 plus packs @ £8.06 per m² / £3.87 per slab = £15.47 (£18.57 Inc-VAT)
27 plus packs @ £7.99 per m² / £3.84 per slab = £15.33 (£18.40 Inc-VAT)
40 plus packs @ £7.92 per m² / £3.80 per slab = £15.20 (£18.24 Inc-VAT)
54 plus packs @ £7.85 per m² / £3.77 per slab = £15.06 (£18.08 Inc-VAT)
67 plus packs @ £7.78 per m² / £3.74 per slab = £14.93 (£17.92 Inc-VAT)

 

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