Benefits:

Premium performance rigid phenolic insulation – thermal conductivity as low as 0.021 W/m.K
Class 0 / Low Risk fire rating.
Negligible smoke obscuration.
Utilises traditional cavity wall construction methods.
Clear cavity is maintained – resists moisture penetration.
Low emissivity foil facings are resistant to the passage of water vapour and double the thermal resistance of the cavity.
Meets NHBC technical requirements when used with a 50 mm residual cavity.
Unaffected by air movement.
Easy to handle and install.
Non–deleterious material.
CFC/HCFC–free with zero Ozone Depletion Potential (ODP).

Product Description

The Facings

Kingspan Kooltherm® K8 Cavity Board is faced on both sides with a low emissivity composite foil which is highly resistant to the transmission of water vapour. This reflective, low emissivity surface effectively doubles the thermal resistance of the cavity in which the board is placed.

The Core

The core of Kingspan Kooltherm® K8 Cavity Board is a premium performance CFC/HCFC–free rigid phenolic insulant of typical density 35 kg/m3.

CFC/HCFC–free

Kingspan Kooltherm® K8 Cavity Board is manufactured without the use of CFCs/HCFCs and has zero Ozone Depletion Potential (ODP).

Standard Dimensions 600mm x 1200mm

Kingspan Kooltherm® K8 is available in the standard size of 450mm wide by 1200mm long, and is readily available from us in the following most popular thicknesses ... 40mm, 45mm, 50mm 60mm.

We can also source the following sizes for larger orders ... 17mm, 20mm, 25mm,30mm, 35mm, 55mm, and 65mm. However, short lead times may apply.

Compressive Strength

Typically exceeds 100 kPa at 10% compression when tested to BS EN 826: 1996 (Thermal insulating products for building applications. Determination of compression behaviour).

Water Vapour Resistance

Modified to include board facings, the boards achieve a resistance far greater than 100 MN.s/g when tested in accordance with BS 4370–2: 1993 (Methods of test for rigid cellular materials. Methods 7 to 9).

Durability

If correctly applied, Kingspan Kooltherm® K8 Cavity Board has an indefinite life. Its durability depends on the supporting structure and the conditions of its use.

Resistance to Solvents, Fungi & Rodents

The insulation core is resistant to short–term contact with petrol and with most dilute acids, alkalis and mineral oils. However, it is recommended that any spills be cleaned off fully before the boards are installed. Ensure that safe methods of cleaning are used, as recommended by suppliers of the spilt liquid.

The insulation core is not resistant to some solvent–based adhesive systems, particularly those containing methyl ethyl ketone. Adhesives containing such solvents should not be used in association with this product. Damaged boards or boards that have been in contact with harsh solvents or acids should not be used.

The insulation core and facings used in the manufacture of Kingspan Kooltherm® K8 Cavity Board resist attack by mould and microbial growth and do not provide any food value to vermin.

Fire Performance

The rigid phenolic insulation core of Kingspan Kooltherm® K8 will achieve the results given below, which enable it to be classified by the Building Regulations as being Class 0 and as Low Risk by the Technical Standards in Scotland.

The fire rating of Kingspan Kooltherm® K8 boards when subjected to British Standard fire tests, will vary, depending on the particular application.

Test - BS 476–6: 1989 (Fire tests on building materials and structures. Method of test for fire propagation for products)

Result - Fire propagation index of Fire tests on building performance (1) not exceeding 12 and sub Index (i1) not exceeding 6 (for rigid phenolic insulation core)

Test - BS 476–7: 1997 (Fire tests on building materials and structures. Method of test to determine the classification of the surface spread of flame of products

Result - Class 1 rating

Test - BS 5111–1: 1974 (Smoke Obscuration)

Result - < 5%

Wall Ties & Retaining Clips

Kingspan Kooltherm® K8 Cavity Board is normally held in position by the wall ties used to tie the two skins of masonry together, using retaining clips. Walls are constructed in the conventional manner but with the first run of wall ties at least one course below the damp proof course and at approximately 600 mm horizontal centres. A section of the inner or outer leaf of the wall is built up to the course below the next run of the wall ties which are situated at a spacing of 450 mm vertically and not exceeding 900 mm (750 mm in Ireland) horizontally.

The Kingspan Kooltherm® K8 Cavity Board is then placed in position behind the retaining clips on the wall ties, additional wall ties and clips are used to retain the top of the board.
Additional ties may also be required at corners, junctions and cut board ends. Each board should be secured at a minimum of three points. The boards should form a reasonable butt jointed row. The other leaf is then built up to the level of the top of the boards and construction proceeds.

The first row of boards commencing below damp–proof course level also provides some edge insulation to the floor slab (see Figure 2). Successive sections of wall incorporating wall ties and clips are constructed and Kingspan Kooltherm® K8 Cavity Board is installed as work proceeds up to the required height. After raising each section of inner leaf, before installation, excess mortar should be removed and mortar droppings cleaned from exposed edges of the installed slabs.
Use of a cavity batten or cavity board is recommended to protect board edges and maintain a clear cavity (see Figures 5 and 6 or refer to BBA Certificate 94/3047).

Cutting

Cutting should be carried out either by using a fine toothed saw, or by scoring with a sharp knife, snapping the board over a straight edge and then cutting the facing on the other side. Ensure accurate trimming to achieve close butting joints and continuity of insulation.

Daily Working Practice

Installed Kingspan Kooltherm® K8 Cavity Board boards should be protected against inclement weather.

Manufacturer's details

Kingspan Insulation Ltd., Pembridge, Leominster, Herefordshire, HR6 9LA

Web site: Kingspan Home Page

Kingspan Technical Advisory Service

While just-insulation provides the very best products at the very best prices ... for the very best advise we recommend you contact Kingspan directly.

General Enquiries - Telephone: 0870 850 8555 - Fax: 0870 850 8666
Email: info.uk@insulation.kingspan.com

Technical Advice - Telephone: 0870 850 8333 - Fax: 01544 387 278
Email: techline.uk@insulation.kingspan.com

Tapered Roofing Enquiries - Telephone: 0870 761 7770 - Fax: 01544 387 289
Email: tapered.uk@insulation.kingspan.com

Literature and Samples - Telephone: 0870 733 8333 - Fax: 01544 387 299
Email: literature.uk@insulation.kingspan.com

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Page last updated Tuesday, June 1, 2010