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Kingspan Kooltherm K15 Phenolic Rainscreen Board

High performance Kingspan product, available in most popular thickness’s from the manufacturer, therefore short lead-times apply. This Kooltherm Range includes the following readily available product thickness's 50mm, 60mm, 70mm, 80mm, 90mm and 100mm. Manufactured to order are the following thickness's 25mm, 30mm, 40mm, 45mm, 75mm, 85mm, 110mm, 120mm, 130mm and 140mm

Product Functions Kingspan Kooltherm K15 Rainscreen cladding for external wall insulation

Kingspan Kooltherm K15 Phenolic Rainscreen Cladding Boards This insulated rainscreen board with composite foil on both sides and is used to insulate behind cladding systems, and should be installed between proprietary fixing rails.

K15 Rainscreen Board is installed between proprietary fixing brackets. The insulation boards are easily cut to individual bracket spacings.

Once installed, K15 can exceed Building Regulations / Standards requirements for these applications

Product Description

The Board Facings

Kingspan Kooltherm K15 Rainscreen Board is faced on both sides with a low emissivity composite foil facing which is highly resistant to the transmission of water vapour.

The Core

The core of K15 is a premium performance CFC/HCFC free rigid thermoset phenolic insulant of typical density 35 kg/m3.

CFC/HCFC free

K15 is manufactured without the use of CFCs/HCFCs and has zero Ozone Depletion Potential (ODP).

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, K15 Rainscreen 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 the 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.

Fire Performance

The rigid phenolic insulation core of K15 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 K15 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%

    Test BS 8414: 2002 (Fire performance of external cladding systems. Test methods for non–load bearing external cladding systems applied to the face of a building)

Result - Successfully tested – K15 does not contribute to fire propagation / spread within a cladding system

K15 Rainscreen Board meets the criteria within BR 135 (Fire performance of external thermal insulation for walls of multi–storey buildings), and is therefore acceptable for use above 18 metres in accordance with the Building Regulations / Standards.

Product 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
    Suitable for use in rainscreen cladding systems
    Clear cavity is maintained resists moisture penetration
    Unaffected by air movement
    Resistant to the passage of water vapour
    Easy to handle and install
    Ideal for new build and refurbishment
    Non deleterious material
    CFC/HCFC free with zero Ozone Depletion Potential (ODP)


Product availability indicators

K15 - Price and Availability Advisory:

Presently there are no availability restrictions, apart from manufacturing lead-times and minimum quantity order levels on the 25mm, 30mm, 40mm, 45mm, 75mm, 85mm, 110mm, 120mm, 130mm and 140mm boards

Excellent = Product Availability Excellent Good = Product Availability Good Fair = Product Availability Fair Poor =  Product Availability Poor Undetermined = Product Availability Undetermined
Availability relies on stock levels at closest depots and upon transport logistics to effect deliveries


Technical Data

Kingspan K15 Phenolic Insulation Boards for rainscreen framing exterior wall applications

Product Code

Board dimensions

Thickness (mm)

λ Value (w/mK)

R-value (m²K/W)

U Value (W/m²K)

Weight (kg/m²)

Unit weight (kg)

Kingspan K15 25mm 12 x 1.2m x 2.4m = 34.56m² 25 0.021 1.15 0.87 1.22 42.24
Kingspan K15 30mm 10 x 1.2m x 2.4m = 28.8m² 30 0.021 1.40 0.72 1.39 40.10
Kingspan K15 40mm 8 x 1.2m x 2.4m = 23.04m² 40 0.021 1.90 0.53 1.74 40.16
Kingspan K15 45mm 7 x 1.2m x 2.4m = 20.16m² 45 0.020 2.00 0.50 1.92 38.71
Kingspan K15 50mm 6 x 1.2m x 2.4m = 17.28m² 50 0.020 2.50 0.40 2.09 36.12
Kingspan K15 60mm 5 x 1.2m x 2.4m = 14.4m² 60 0.020 3.00 0.34 2.44 35.15
Kingspan K15 70mm 4 x 1.2m x 2.4m = 11.52m² 70 0.020 3.50 0.29 2.79 32.16
Kingspan K15 75mm 4 x 1.2m x 2.4m = 11.52m² 75 0.020 3.75 0.27 2.97 34.24
Kingspan K15 80mm 4 x 1.2m x 2.4m = 11.52m² 80 0.020 4.00 0.25 3.14 36.20
Kingspan K15 85mm 3 x 1.2m x 2.4m = 8.64m² 85 0.020 4.25 0.24 3.32 28.71
Kingspan K15 90mm 3 x 1.2m x 2.4m = 8.64m² 90 0.020 4.50 0.23 3.49 30.18
Kingspan K15 100mm 3 x 1.2m x 2.4m = 8.64m² 100 0.020 5.00 0.20 3.84 33.18
Kingspan K15 110mm 3 x 1.2m x 2.4m = 8.64m² 110 0.020 5.50 0.19 4.19 36.21
Kingspan K15 120mm 2 x 1.2m x 2.4m = 5.76m² 120 0.020 6.00 0.17 4.54 26.16
Kingspan K15 130mm 2 x 1.2m x 2.4m = 5.76m² 130 0.020 6.50 0.16 4.76 27.42
Kingspan K15 140mm 2 x 1.2m x 2.4m = 5.76m² 140 0.020 7.00 0.15 5.11 29.44
Thermal conductivity / Lambda value (W/mK) = 0.021 to 0.020 | Compressive Strength (kPa) = > 100 | Water vapour resistance (MNs/g) = > 100 | Fire Performace = Class 0 | Please Note: R-Value = Thermal Resistance; U-Value = Thermal Transmittance Co-efficient; Compressive Strength = kiloPascals; Vapour resistance = Meganewton second gram

Product Information and Certification

Links to manufacturer's information. Click to download in a separate browser window.

Kingspan K15 Datasheet | Kingspan Product Selector | Kingspan Design Manual | Kingspan BBA U-Value Compliancy Cert. | K15 CE Performance Declaration


Kingspan Kooltherm® K15 Range - Certification

K15 Rainscreen Wall Board insulation is manufactured to the highest standards under a management system certified to BS / I.S. EN ISO 9001: 2008 (Quality management systems. Requirements), BS / I.S. EN ISO 14001 : 2004 (Environmental Management Systems. Requirements) and BS / I.S. OHSAS 18001: 2007 (Health and Safety Management Systems. Requirements).

CE Marking - Kingspan has provided Decelerations of Performance for its products. CE marking is the visible sign, that the product has met the requirements of the European Norms (ENs) and is therefore compliant with the Construction Products Regulation (CPR).


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Product Installation - Kingspan K15

Framing board wooden stud wall application

External Masonry – Timber Frame Wall with Insulating Sheathing

K12 framing board should be fixed to the external surface of the timber frame structure (outside of any OSB or plywood sheathing) and restrained using temporary fixing in the form of large headed galvanised clout nails prior to being tied into the masonry leaf with an appropriate timber frame wall tie. Ensure that K12s are tightly butted and that any requirements of the timber frame manufacturer are met.
Please contact the Kingspan Insulation Technical Service Department (see contact information below) for further information.

Wall Ties – Timber Frame Wall

The outer leaf of masonry may be constructed in the conventional manner using appropriate wall ties to restrain the two wall skins together. The ties should be inserted whilst constructing the outer leaf ensuring a slight offset is achieved, sloping the tie downwards towards the outer leaf.

External Masonry – Steel Frame Wall with Insulating SheathingFraming board metal stud wall application

Similarly fixed as for 'Timber Frame', K12 should be restrained to the outside of the steel frame construction ensuring vertical board joints coincide with a vertical member. Fixings should be in accordance with the steel frame manufacturer's recommendations.
Please contact the Kingspan Insulation Technical Service Department (see contact information below) for further information.

Wall Ties – Steel Frame Wall

Advice should be sought from the appropriate steel frame manufacturer for recommendations of a suitable wall tie specification.

External Masonry - Timber Frame Wall with Insulation

Between Studs To restrain insulation boards from moving within the timber stud cavity, side nail battens to the stud to provide a 'stop'. This should coincide with board thickness, allowing the K12FramingBoardtofinishflushwith the outside surface of the timbers.
Insulation boards that have been individually cut to fit the stud spacings may be temporarily held to the battens with large headed clout nails.
An additional restraint to the boards will be provided by a plasterboard lining fixed to the inside face of the timbers.
When utilising K12 between studwork, the plasterboard lining should be of the vapour check type or a separate polythene vapour control layer used.
Ensure there is a tight fit between K12 framing board and the adjoining structure. Fill all gaps with expanding urethane sealant.

Brick Veneer Wall (External Side of Frame)

Framing board brick veneer applicationEnsure that stud spacings do not exceed 600 mm centres.
Attach appropriate wall ties to frame at spacings required for the masonry external leaf.
Fix Kingspan Kooltherm K12 Framing Board to the external surface of the frame structure ensuring vertical board joints coincide with a vertical member.
Ensure that the boards are lightly butted and continuity of insulation is maintained.
Use large headed galvanised clout nails or screws as fixings prior to the insulation boards being tied to the frame with an appropriate timber frame wall tie and insulation retaining disc.
Ensure that fixings are coincident with the underlying timber studs, top and bottom wall plates.
Construct the outer leaf of masonry in the conventional manner, using appropriate wall ties to hold the two wall leaves together.

Dwarf Wall – Insulation Between Studs

To restrain insulation boards from moving within the timber stud cavity, side nail battens to the stud to provide a 'stop'. This should coincide with board thickness, allowing the K12 to finish flush with the inside surface of the timbers.
Insulation boards that have been individually cut to fit the stud spacings may be temporarily held to the battens with large headed clout nails.
An additional restraint to the boards will be provided by a plasterboard lining fixed to the inside face of the timbers.
When utilising K12 between studwork, the plasterboard lining should be of the vapour check type or a separate polythene vapour control layer used.
Ensure there is a tight fit between K12 framing board and the adjoining structure. Fill all gaps with expanding urethane sealant.

Timber Clad / Tile Hung Timber Frame Wall

Insulating Sheathing Where the intended external cladding is to be timber boarding, K12 should be temporarily pinned in place with all joints tightly butted.
A breathable membrane (such as Dupont Tyvek Supro) is applied over the insulation boards and temporarily stapled or pinned in place. Preservative treated softwood counter–battens are fixed vertically to the wall structure at 600 mm centres.
The timber boarding system is then fixed to the counter–battens.
The counter–battens should be fixed at centres to coincide with the timber frame wall studs.
Application advice should be sought from the appropriate membrane manufacturer.
Timber boarding should be secured in accordance with the boarding manufacturer's recommendations.


Contact Manufacturer

Kingspan Limited

Kingspan Kooltherm Phenolic Foam, Therma PIR, and Styrozone Polystyrene range of rigid insulation boards

Pembridge, Leominster, Herefordshire, HR6 9LA

Kingspan Technical Advisory Service.

Telephone: 01544 388 601 - Fax: 01544 388 888
Email: info@kingspaninsulation.co.uk  / technical@kingspaninsulation.co.uk
Web sites: Kingspan Home Page / Kingspan U-Value Calculator.

Contact us

Insulation Online Limited

27 Massetts Road, Horley, Surrey, Rh4 7DQ, UK

Telephone: 0333 8000 828

Telephone: 01293 781252

Facsimile: 0333 7000 797

Email: enquiries@insulation-online.com