kooltherm k8

� Premium performance rigidphenolic insulation –thermal conductivity as lowas 0.021 W/m.K

� Class 0 / Low Risk fire ratedinsulation core

� Negligible smoke obscuration

� Utilises traditional cavity wallconstruction methods

� Clear cavity is maintained – resistsmoisture penetration

� Low emissivity foil facings areresistant to the passage of watervapour and double the thermalresistance of the cavity

� Meets NHBC technicalrequirements when used witha 50 mm residual cavity

� Unaffected by air movement

� Easy to handle and install

� Non–deleterious material

� CFC/HCFC–free with zero OzoneDepletion Potential (ODP)

CI/Sfb

Ninth Issue October 2010

(27.9) Rn7 M2

PARTIAL FILL CAVITY WALL INSULATION

PR

EMIUM

PE R F O R M

ANCE

BBABRITISHBOARD OFAGRÉMENT

CERTIFICATE 94/3047

K8 Cavity Board

I n s u l a t i o n

Figure 1

Figure 2

Double drip type walltie and retaining clip(BBA Approved)

Damp proofcourse level

Residual cavity minimum25 mm (subject to designconsiderations)

Residual cavity minimum25 mm (subject to designconsiderations)

Boards can commencebelow dpc level and offersome thermal insulationto the floor slab

Kingspan Kooltherm®

K8 Cavity Board

Typical Design Detail

Outer leafof masonry

Kingspan Kooltherm® K8Cavity Board

Double drip type walltie and retaining clip(BBA Approved)

2

K8 Cavity Board

Design ConsiderationsSustainabilityIn the past, erroneously, the relative environmental sustainabilityof insulation materials has been compared on the basis ofembodied energy and ozone depletion potential. It is nowrecognised that a much wider basket of embodiedenvironmental impacts (including those caused by theirembodied energy), rather than embodied energy alone, is theonly credible tool of comparison. Time has also annulled ozonedepletion potential as an issue as all insulation materials arenow banned from using CFC and HCFC blowing agents by law.

For buildings designed to today’s Building Regulations energyuse standards it is now also known that the embodiedenvironmental impacts of all of the materials and labour usedto create a building are insignificant in comparison with thelifetime operational environmental impacts of that building, andso are of very limited importance. Since it is operational energyuse that creates the vast majority of operational environmentalimpact, saving energy by specifying the lowest U–valuespossible is the most environmentally sustainable action to take.

However, one of the most neglected facts aboutenvironmentally sustainable buildings is that the longevity oftheir standards of operational energy use, and therefore thelongevity of their operational environmental impacts, is critical.The performance of some insulants, such as mineral fibre, candeteriorate rapidly if exposed to water penetration, airmovement or compression. This may increase operationalenergy use and hence compromise the environmentalsustainability of the finished building to an alarming degree.Other insulation materials, such as rigid phenolic or rigidurethane, are not vulnerable to any of these problems.

In summary, designers should:

(a) specify the lowest possible U–value regardless ofinsulation type;

(b) design out the risk of their chosen insulant not performingas specified; and

(c) if the latter is not possible, choose an insulant that is at lowrisk of failure e.g. a cellular plastic insulation material.

However, manufacturers should not rest on their laurels; it is amatter of social responsibility to be open and honest about theenvironmental impact of the manufacture of a product, and afull Life Cycle Analysis (LCA) based on a much wider basket ofenvironmental impacts, rather than embodied energy alone, isrecognised as the preferred tool to achieve this. KingspanInsulation was the first insulation manufacturer to openlycomplete and publish independently certified Ecoprofiles(a type of LCA) on its product ranges. The Ecoprofile for theKingspan Therma™ range of rigid urethane insulation productswas performed by Building Research Establishment (BRE).The product range comfortably achieves a BREGreen Guide A rating. Kingspan Insulation iscurrently completing a BRE Ecoprofile of itsKingspan Kooltherm® K–range of rigid phenolicinsulation products.

Specification ClauseKingspan Kooltherm® K8 Cavity Board should be described inspecifications as:–

The wall insulation shall be Kingspan Kooltherm® K8 CavityBoard ____mm thick comprising a CFC/HCFC–free rigidphenolic insulation core with low emissivity composite foilfacings on both sides manufactured to the highest standardsunder quality control systems approved to BS EN ISO 9001:2000 by Kingspan Insulation Limited and shall be applied inaccordance with the instructions issued by them.

NBS users should refer to clause(s):F30 155 (Standard and Intermediate)F30 12 (Minor works)

Typical U–valuesThe following examples have been calculated using theCombined Method for compliance with Building Regulations /Standards revised after 2002. These examples are based onthe use of Kingspan Kooltherm® K8 Cavity Board fixed to theouter face of the inner leaf of a masonry cavity wall with aminimum 25 mm clear residual cavity between the outer faceof the Kingspan Kooltherm® K8 Cavity Board and the innerface of the outer masonry leaf. The internal wall finish has beenassumed to be 3 mm skim coated 12.5 mm plasterboardinstalled on dabs. If your construction is any different, pleasecontact the Kingspan Technical Service Department(see rear cover).

Combined Method – U–values were calculated using themethod which has been adopted to bring National standardsin line with the European Standard calculation method,BS / I.S. EN ISO 6946: 1997 (Building components andbuilding elements. Thermal resistance and thermaltransmittance. Calculation method).

NB When calculating U–values to BS EN ISO 6946: 1997, the type of wall tie used maychange the thickness of insulation required. These calculations assume a stainless steelflexible tie with 2.5 ties per m2 and a cross–sectional area of 12.50 mm2. Please contact theKingspan Insulation Technical Service Department (see rear cover) for project calculations.

NB for the purposes of these calculations the standard of workmanship has been assumedgood and therefore the correction factor for air gaps has been ignored.

NB The figures quoted are for guidance only. A detailed U–value calculation together withcondensation risk analysis should be completed for each individual project. Please contact theKingspan Insulation Technical Service Department (see rear cover) for assistance.

Brick Outer Leaf / Cavity / Dense Block Inner Leaf

Insulant Thickness U–value (W/m2.K)(mm)

17 0.5220 0.4925 0.4330 0.3935 0.3640 0.3450 0.2855 0.2660 0.2465 0.23

NB Calculations assume the use of 102.5 mm external brickwork and 100 mm denseinternal blockwork of λ–value 1.13 W/m.K.

Brick Outer Leaf / Cavity / Medium Dense BlockInner Leaf


17 0.4920 0.4625 0.4130 0.3835 0.3540 0.3345 0.2950 0.2755 0.2560 0.2465 0.23

NB Calculations assume the use of 102.5 mm external brickwork and 100 mm mediumdense internal blockwork of λ–value 0.51 W/m.K.

But there is far more to sustainability than whether or not aproduct, process or company affects the environment in apositive or a negative way. A company can, and should,demonstrate its financial viability and social responsibility, aswell as ensure that its materials and methods do not addunduly to the burden placed on the planet.

Kingspan Insulation has now put the manufacture of itsproducts at its Pembridge facility in Herefordshire through arigorous independent appraisal of its economic, social,environmental and natural resource impacts using Arup’sSPeAR® tool.

The results show a well balanced performance in terms ofsustainability, and that Kingspan Insulation is already meetinglegislation or best practice in most areas, even moving beyondbest practice in some. Kingspan Insulation is the first and onlyconstruction material manufacturer to have taken this boldmove and openly publish the results.

Residual Cavity WidthFor wall heights up to 12 m a minimum 25 mm cavity isrecommended, and a minimum 50 mm cavity for wall heightgreater than 12 m, and up to and including 25 m after theinstallation of Kingspan Kooltherm® K8 Cavity Boardirrespective of the thickness specified. By maintaining a clearcavity, problems associated with fully filled cavities can beavoided. For further details please refer to current BBACertificate 94/3047.

NB A residual cavity width of 50 mm nominal will be required by the NHBC where nominalstandards of tolerance and workmanship are accepted.

Design StandardsBS 5628–1: 1992 (Code of practice for use of masonry.Structural use of unreinforced masonry) and BS 5628–2: 2000(Code of practice for use of masonry. Structural use ofreinforced and prestressed masonry) should be consultedregarding the construction of insulated cavity walls

Wall TiesWall ties should have a retaining clip for securing the insulantto the masonry plane and be of a double drip type. Ideally theyshould be BBA approved and conform to BS EN 845–1: 2003(Specification for ancillary components for masonry. Ties,tension straps, hangers and brackets).

Severe Exposure ZonesIn severe exposure zones only stainless steel or copper alloywall ties should be used. BS 5628–3: 2001 (Code of practicefor use of masonry. Materials and components, design andworkmanship) refers to this.

3

Residual cavityExternal leaf brickwork

Vertical dampproof course

Door / window jamb

Inner leafdense block

Plasterboardfinish


K8 Cavity Board

4

Prevention of Thermal BridgingIn an effort to prevent a cold bridge detail at window cill andjamb details the designer may wish to adopt the followingdetails. The insulation is simply cut and returned to suit.

Figure 3 Robust Jamb Detail – UK

Residual cavityExternal leaf brickwork


Door / window jamb


Plasterboard finish


K8 Cavity Board

Figure 4 Robust Jamb Detail – Ireland

K8 Cavity Board

Brick Outer Leaf / Cavity / Lightweight Block Inner Leaf


17 0.4320 0.4125 0.3730 0.3435 0.3240 0.3045 0.2750 0.2555 0.24

NB Calculations assume the use of 102.5 mm external brickwork and 100 mm lightweightinternal blockwork of λ–value 0.19 W/m.K.

Brick Outer Leaf / Cavity / Aerated Block Inner Leaf


17 0.3920 0.3725 0.3430 0.3135 0.2940 0.2845 0.2550 0.24

NB Calculations assume the use of 102.5 mm external brickwork and 100 mm internalaerated blockwork of λ–value 0.11 W/m.K.

Dense Block Outer Leaf / Cavity / Dense BlockInner Leaf


17 0.5220 0.4925 0.4330 0.4040 0.3450 0.2855 0.2660 0.2565 0.23

NB Calculations assume the use of 100 mm dense block inner and outer leaves of λ–value1.13 W/m.K.

NB Calculations assume a 20 mm external coat of sand / cement render.

Dense Block Outer Leaf / Cavity / Medium Dense BlockInner Leaf


17 0.4920 0.4625 0.4130 0.3835 0.3540 0.3345 0.2950 0.2755 0.2560 0.24

NB Calculations assume the use of 100 mm external dense blockwork of λ-value 1.13W/m.K and 100 mm internal medium dense blockwork of λ–value 0.51 W/m.K.

NB Calculations assume a 20 mm external coat of sand / cement render.

5

Figure 5 Robust Cill Detail – UK

Residual cavity

External leafbrickwork



Concrete cill


K8 Cavity Board

Plasterboardfinish

Figure 6 Robust Cill Detail – Ireland

Residual cavity

External leafbrickwork



Concrete cill


K8 Cavity Board

Plasterboardfinish

SiteworkWall Ties & Retaining ClipsKingspan Kooltherm® K8 Cavity Board is normally held inposition by the wall ties used to tie the two skins of masonrytogether, using retaining clips. Walls are constructed in theconventional manner but with the first run of wall ties at leastone course below the damp proof course and at approximately600 mm horizontal centres. A section of the inner or outer leafof the wall is built up to the course below the next run of thewall ties which are situated at a spacing of 450 mm verticallyand not exceeding 900 mm (750 mm in Ireland) horizontally.

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

The first row of boards commencing below damp–proofcourse level also provides some edge insulation to the floorslab (see Figure 2). Successive sections of wall incorporatingwall ties and clips are constructed and Kingspan Kooltherm®

K8 Cavity Board is installed as work proceeds up to therequired height. After raising each section of inner leaf, beforeinstallation, excess mortar should be removed and mortardroppings cleaned from exposed edges of the installed slabs.Use of a cavity batten or cavity board is recommendedto protect board edges and maintain a clear cavity(see Figures 5 and 6 or refer to BBA Certificate 94/3047).

Daily Working PracticeInstalled Kingspan Kooltherm® K8 Cavity Board boards shouldbe protected against inclement weather.

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

AvailabilityKingspan Kooltherm® K8 Cavity Board is available throughspecialist insulation distributors and selected builders’merchants throughout the UK, Ireland and Europe.

PackagingAccording to quantity, the boards are supplied in packs or onpallets, labelled and shrinkwrapped in polythene.

6

Product DescriptionThe FacingsKingspan Kooltherm® K8 Cavity Board is faced on both sideswith a low emissivity composite foil which is highly resistant tothe transmission of water vapour. This reflective, low emissivitysurface effectively doubles the thermal resistance of the cavityin which the board is placed.

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

CFC/HCFC–freeKingspan Kooltherm® K8 Cavity Board ismanufactured without the use of CFCs/HCFCs andhas zero Ozone Depletion Potential (ODP).

Product DataStandards and ApprovalsKingspan Kooltherm® K8 Cavity Board is manufactured to thehighest standards under a quality control system approved toBS EN ISO 9001: 2000 (Quality management systems.Requirements). Its use is covered by BBA Certificate 94/3047.

Standard DimensionsKingspan Kooltherm® K8 Cavity Board is available in thefollowing standard size:

Nominal Dimension Availability

Length (m) 1.2Width (m) 0.45Insulant Thickness (mm) Refer to local distributor or

Kingspan Insulation price list forcurrent stock and non–stock sizes.

Compressive StrengthTypically exceeds 100 kPa at 10% compression when testedto BS EN 826: 1996 (Thermal insulating products for buildingapplications. Determination of compression behaviour).

Water Vapour ResistanceModified to include board facings, the boards achieve aresistance far greater than 100 MN.s/g when tested inaccordance with BS 4370–2: 1993 (Methods of test for rigidcellular materials. Methods 7 to 9).

DurabilityIf correctly applied, Kingspan Kooltherm® K8 Cavity Boardhas an indefinite life. Its durability depends on the supportingstructure and the conditions of its use.

BBABRITISHBOARD OFAGRÉMENT

CERTIFICATE 94/3047

Manufactured to BS EN ISO 9001: 2000Certificate No. 388

007

K8 Cavity Board

Figure 7 Use of a Cavity Batten to protect the Cavity

Figure 8 Use of a Cavity Board to protect the Cavity

StorageThe packaging of Kingspan Kooltherm® K8 Cavity Boardshould not be considered adequate for long term outdoorprotection. Ideally, boards should be stored inside a building.If, however, outdoor storage cannot be avoided then theboards should be stacked clear of the ground and coveredwith a polythene sheet or weatherproof tarpaulin. Boards thathave been allowed to get wet should not be used.

Health and SafetyKingspan Insulation products are chemically inert and safe touse. A leaflet on this topic which satisfies the requirements setout in the Control of Substances Hazardous to HealthRegulations, 1988 (COSHH) is available from the KingspanInsulation Marketing Department (see rear cover).

Please note that the reflective surface on this product is designed to enhance its thermalperformance. As such, it will reflect light as well as heat, including ultraviolet light. Therefore, ifthis board is being installed during very bright or sunny weather, it is advisable to wear UVprotective sunglasses or goggles, and if the skin is exposed for a significant period of time, toprotect the bare skin with a UV block sun cream.

The reflective facing used on this product can be slippery underfoot when wet. Therefore, it isrecommended that any excess material should be contained to avoid a slip hazard.

Warning – do not stand on or otherwise support your weight on this board unless it is fullysupported by a load bearing surface.

7

Thermal Properties

The λ–values and R–values quoted are in accordancewith the principles in the Harmonised European

Standard BS EN 13166: 2001 (Thermal insulationproducts for buildings – Factory made products ofphenolic foam (PF) – Specification) using so called

90 / 90 principles. Comparison with alternativeproducts may not be appropriate unless the same

procedures have been followed.

Thermal ConductivityThe boards achieve a thermal conductivity (λ–value) of0.024 W/m.K (insulant thickness 15–24 mm), 0.023 W/m.K(insulant thickness 25–44 mm) and 0.021 W/m.K (insulantthickness ≥ 45 mm).

Thermal ResistanceThe thermal resistance (R–value) varies with thickness and iscalculated by dividing the thickness of the board (expressed inmetres) by its thermal conductivity.

Insulation Thickness Thermal Resistance(mm) (m2.K/W)

17 0.7020 0.8025 1.0530 1.3035 1.5040 1.7045 2.1050 2.3555 2.6060 2.8565 3.05

Refer to local distributor or Kingspan Insulation price list for current stock andnon–stock sizes.

Resistance to Solvents, Fungi & RodentsThe insulation core is resistant to short–term contact with petroland with most dilute acids, alkalis and mineral oils. However, itis recommended that any spills be cleaned off fully before theboards are installed. Ensure that safe methods of cleaningare used, as recommended by suppliers of the spilt liquid.The insulation core is not resistant to some solvent–basedadhesive systems, particularly those containing methyl ethylketone. Adhesives containing such solvents should not be usedin association with this product. Damaged boards or boardsthat have been in contact with harsh solvents or acids shouldnot be used.

The insulation core and facings used in the manufacture ofKingspan Kooltherm® K8 Cavity Board resist attack bymould and microbial growth and do not provide any foodvalue to vermin.

Fire PerformanceKingspan Kooltherm® K8 Cavity Board will achieve the resultsgiven below, which enable it to be classified by the BuildingRegulations as being Class 0 and as Low Risk by theTechnical Standards in Scotland.

Test Result

BS 476–6: 1989 Fire propagation index of(Fire tests on building performance (I) not exceedingmaterials and structures. 12 and sub index (i1) notMethod of test for fire exceeding 6 (for rigid phenolicpropagation for products) insulation core)BS 476–7: 1997 Class 1 rating(Fire tests on building materialsand structures. Method of testto determine the classificationof the surface spread of flameof products)BS 5111–1: 1974 < 5%(Smoke Obscuration)

The use of the product in the context of BBA Certificate94/3047 does not prejudice the fire resistance properties of thewall. It is unlikely to become ignited within the cavity. If firedoes penetrate into an unventilated cavity, the amount of airpresent will be insufficient to support combustion, and flamespread will be minimal.

Walls containing the product do not need cavity barriers inbuildings of any purpose group provided they are constructedin accordance with the provisions of BBA Certificate 94/3047.

Further details of the fire performance of Kingspan Insulationproducts may be obtained from the Kingspan InsulationTechnical Service Department (see rear cover).

Customer ServiceFor quotations, order placement and details of despatches pleasecontact the Kingspan Insulation Customer Service Department onthe numbers below:

UK – Tel: +44 (0) 870 850 8555– Fax: +44 (0) 870 850 8666– email: [email protected]

Ireland – Tel: +353 (0) 42 97 54200– Fax: +353 (0) 42 97 54299– email: [email protected]

Literature & SamplesKingspan Insulation produces a comprehensive range of technicalliterature for specifiers, contractors, stockists and end users.The literature contains clear ‘user friendly’ advice on typicaldesign; design considerations; thermal properties; siteworkand product data.

Available as a complete Design Manual or as individual productbrochures, Kingspan Insulation technical literature is an essentialspecification tool. For copies please contact the KingspanInsulation Marketing Department on the numbers below:



Tapered RoofingFor technical guidance, quotations, order placement anddetails of despatches please contact the Kingspan InsulationTapered Roofing Department on the numbers below:



Technical Advice / DesignKingspan Insulation supports all of its products with acomprehensive Technical Advisory Service for specifiers, stockistsand contractors.

This includes a computer–aided service designed to give fast,accurate technical advice. Simply phone the Kingspan InsulationTechnical Service Department with your project specification.Calculations can be carried out to provide U–values, condensation/ dew point risk, required insulation thicknesses etc… Thereafterany number of permutations can be provided to help you achieveyour desired targets.

The Kingspan Insulation Technical Service Department can alsogive general application advice and advice on design detailing andfixing etc... Site surveys are also undertaken as appropriate.

Please contact the Kingspan Insulation Technical ServiceDepartment on the numbers below:



General EnquiriesFor all other enquiries contact Kingspan Insulation on thenumbers below:



Kingspan Insulation Ltd. reserves the right to amend product specifications without priornotice. Product thicknesses shown in this document should not be taken as being availableex-stock and reference should be made to the current Kingspan Insulation price-list or advicesought from Kingspan Insulation’s Customer Service Department (see above left).The information, technical details and fixing instructions etc. included in this literature are givenin good faith and apply to uses described. Recommendations for use should be verified as tothe suitability and compliance with actual requirements, specifications and any applicable lawsand regulations. For other applications or conditions of use, Kingspan Insulation offers aTechnical Advisory Service (see above) the advice of which should be sought for uses ofKingspan Insulation products that are not specifically described herein. Please check that yourcopy of the literature is current by contacting the Kingspan Insulation Marketing Department(see left).

Contact Details

Kingspan Insulation LtdPembridge, Leominster, Herefordshire HR6 9LA, UK

Castleblayney, County Monaghan, Ireland

www.insulation.kingspan.com

® Kingspan, Kooltherm, the zo Device and the Lion Device are Registered Trademarks of the Kingspan Group plc™ Therma is a Trademark of the Kingspan Group plc® SPeAR is a Registered Trademark of Arup

kooltherm k8

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