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Kingspan Kooltherm K7 Pitched Roof 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 thicknesses 40mm, 50mm, 60mm, 70mm, 75mm, 90mm, 100mm and 140mm. Manufactured to order are the following thicknesses 25mm, 80mm, 110mm, 120mm, 130mm and 150mm

Product Applications Kingspan Kooltherm K7 rigid pitched roof rafter level insulation

Kingspan K7 is purpose designed premium performance rigid phenolic insulation to be installed at rafter level on tiled or slated pitched warm roof spaces

Kooltherm K7 offers the thinnest rigid board solution to help meet / exceed Building Regulations. These boards can be used between or over timber rafters.

Common applications for this product include … Between and Over Rafters, Between and Under Rafters, Between Rafters, Pitched Roof Sarking

 


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Click to Buy: Kingspan K7 Phenolic Pitched Roof Rafter Level Insulation Boards - Foil Faced = Both Sides

Premium performance rigid phenolic insulation to be installed at rafter level on tiled or slated pitched warm roof spaces. Kooltherm K7 offers the thinnest rigid board solution to help meet and exceed Building Regulations. These boards can be used between or over timber rafters


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Our Prices are currently being revised please contact us for the latest prices

Common product, generally held by all depots Generic Aluminised Tape, 100mm x 45m = 45lm - ranging from £0.16 to £0.17 per lm

1 plus rolls @ £0.17 per lm = £7.62 (£9.14 inc-VAT) per roll
5 plus rolls @ £0.17 per lm = £7.55 (£9.06 inc-VAT) per roll
10 plus rolls @ £0.17 per lm = £7.48 (£8.98 inc-VAT) per roll
15 plus rolls @ £0.16 per lm = £7.41 (£8.89 inc-VAT) per roll
20 plus rolls @ £0.16 per lm = £7.35 (£8.82 inc-VAT) per roll
25 plus rolls @ £0.16 per lm = £7.28 (£8.74 inc-VAT) per roll

Price and Availability Information

Presently there are no availability restrictions, apart from manufacturing lead-times and minimum quantity order levels on certain product sizes.
Please observe the 'Star Rating' indicators to assess availability.

Excellent = Product Availability Excellent Good = Product Availability Good Fair = Product Availability Fair Poor =  Product Availability Poor Undetermined = Product Availability Undetermined
Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations



Product Characteristics

The Board Facings

Faced on both sides with a low emissivity composite foil facing which is highly resistant to the transmission of water vapour. This reflective, low emissivity surface can effectively double the thermal resistance of the cavity in which the board is placed.

The Core

Kingspan Kooltherm K7 Pitched Roof Board is a premium performance CFC/HCFC free rigid phenolic insulant of typical density 35 kg/m3. CFC/HCFC free Kingspan K7 Pitched Roof Board is manufactured without the use of CFCs/HCFCs and has zero Ozone Depletion Potential (ODP).

Compressive Strength

Typically exceeds 125 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

Water Vapour Resistivity

Kingspan Kooltherm® K7 Roofboard produced at Kingspan Insulation’s Pembridge manufacturing facility typically achieves a resistivity greater than 300 MN.s/g.m when tested in accordance with BS EN 12086: 1997 / I.S. EN 12086: 1998 (Thermal insulating products for building applications Determination of water vapour transmission properties).

Durability

If correctly applied, Kingspan K7 Pitched Roof 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.

Fire Performance

The rigid phenolic insulation core of Kingspan K7 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 K7 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 - 1989 Index of 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%


Product Advantages

      Premium performance rigid phenolic insulation – thermal conductivity as low as 0.021 W/m.K

      On average its use creates 15% more usable warm roof space

      Negligible smoke obscuration

      Class 0 / Low Risk fire rating

      Insulation of pipes and tanks is unnecessary

      No condensation risk

      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 Specifications

Kingspan K7 Phenolic Insulation Boards for pitched roof 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 K7 12 x 1.2 x 2.4 = 34.56m² 25 0.023 1.15 0.87 1.09 37.67
Kingspan K7 8 x 1.2 x 2.4 = 23.04m² 40 0.023 1.90 0.53 1.61 37.09
Kingspan K7 6 x 1.2 x 2.4 = 17.28m² 50 0.020 2.50 0.40 1.96 33.87
Kingspan K7 5 x 1.2 x 2.4 = 14.40m² 60 0.020 3.00 0.33 2.31 33.26
Kingspan K7 4 x 1.2 x 2.4 = 11.52m² 70 0.020 3.50 0.29 2.66 30.64
Kingspan K7 4 x 1.2 x 2.4 = 11.52m² 75 0.020 3.75 0.27 2.84 32.72
Kingspan K7 4 x 1.2 x 2.4 = 11.52m² 80 0.020 4.00 0.25 3.01 34.68
Kingspan K7 3 x 1.2 x 2.4 = 8.64m² 90 0.020 4.50 0.22 3.36 29.03
Kingspan K7 3 x 1.2 x 2.4 = 8.64m² 100 0.020 5.00 0.20 3.71 32.05
Kingspan K7 2 x 1.2 x 2.4 = 5.76m² 120 0.020 6.00 0.17 4.41 25.40
Kingspan K7 2 x 1.2 x 2.4 = 5.76m² 130 0.020 6.50 0.15 4.76 27.42
Kingspan K7 2 x 1.2 x 2.4 = 5.76m² 140 0.020 7.00 0.14 5.76 33.18

Thermal conductivity / Lambda value (W/mK) = 0.023 - 0.020 | Compressive strength (kPa) = ≥ 125 | Water vapour resistance (MNs/g) = > 100 | Please Note: R-Value = Thermal Resistance; U Value = Thermal Transmittance Co-efficient; Compressive strength = kiloPascals; Vapour resistance = MegaNewton seconds per gram.


Product Information and Certification

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

Kingspan K7 Datasheet | Kingspan Product Selector | Kingspan Design Manual | Kingspan BBA U-Value Compliancy Cert. | K7 CE Performance Declaration


Kingspan Kooltherm® K7 Range - Certification

K7 Pitched Roof 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).


Product Alternatives

Pitched Roof Rigid Insulation Boards

  • Kingspan TP10 / TF70

    Kingspan TP10 & TF70 are identical boards, branded to emphasise their suitability for roof and floor applications

    Click for more information

    Kingspan TP10 & TF70 are identical boards, branded to emphasise their suitability for roof and floor applications
  • Celotex GA & XR ranges

    Celotex GA4000 and XR4000 rigid PIR boards are very commonly used in pitched roof applications at rafter level

    Click for more information

    Celotex GA4000 and XR4000 General Application Boards
  • Celotex FR5000

    Celotex FR5000 ideal high performance roof insulation that benefits from increased fire resistance protection

    Click for more information

    Celotex FR5000 pritched roof application offers increased fire protection

Product Installation - Kingspan K7

Kooltherm K7 - Over Rafter Layer of Insulation

Over rafter insulation without a sarking board is simply fixed by placing the Kingspan K7 Pitched Roof Board over the rafters and under 38 x 38 mm treated softwood counter–battens in line with the rafters. Secure the counter–battens to the rafters by fixing through both the counter–battens and the K7 Pitched Roof Board.

Over rafter insulation with slates fixed directly into a sarking board is simply fixed by placing the Kingspan  K7 Pitched Roof Board over the rafters with the sarking board overlaid. Secure the sarking board and K7 to the rafters by fixing through both the sarking board and the Kingspan K7 Pitched Roof Board.

Over rafter insulation with a sarking board and tiles on tiling 1 battens and counter–battens, is simply fixed by placing the K7 boards over the rafters with the sarking board overlaid, and with 38 x 38 mm softwood treated counter–battens in line with the rafters.

Secure the counter–battens to the rafters by fixing through the counter–batten, the sarking board and the K7 board.

The K7 board should be tightly butted. Boards may be laid either across or down the line of the rafters and should preferably be laid break bonded in order to help improve the racking strength of the roof. All board joints running from eaves to ridge must occur over rafters.

There is no necessity to tape board joints. A preservative treated stop rail should be secured to the rafters close to the eaves.

Fixings for Over Rafter Insulation

Helifix In–Skew, Target Skewfast, Wallfast Timfix or similar approved fixings should be applied at centres appropriate to the design of the roof and location of the building.


Kingspan K 7 - Between Rafter Layer of Insulation

Between rafter insulation can be installed by three methods.

In cases where the insulation between rafters is to be flush with the top of the rafters but does not fill the full rafter depth, install the insulation by the use of nailable sarking clips.

The nailable sarking clips are driven into the upper surface of each rafter at one–metre intervals up the roof slope.

The nailable sarking clips then support lengths of Kingspan K7 Pitched Roof Board suitably trimmed to size and placed between the rafters.

In cases where the insulation between rafters is to be flush with the bottom of the rafters but does not fill the full rafter depth, install the insulation with the aid of battens nailed to the side of the rafters.

The battens should be in the appropriate position to ensure the insulation is flush with the bottom of the rafters.

In cases where the insulation between rafters fully fills the rafter depth, simply install the correct thickness of insulation in such a manner that it is flush with the bottom of the rafters.

In all cases, ensure that insulation boards are tightly butted and that there is a tight fit between the insulation and the rafters.

Fill all gaps with expanding urethane sealant.

Under Rafter Layer of Insulation

Please refer to Kingspan Kooltherm K18 Insulated Dry–lining Board page. Click Here.

Breathable Sarking Membrane

The specified breathable sarking membrane (such as Dupont Tyvek Supro) is applied as specified. Application advice should be sought from the appropriate membrane manufacturer.

Sarking Felt

In cases without a sarking board, the sarking felt is draped over the rafters to provide a channel for water drainage and held in place by the slate / tile battens, which are nailed through the felt to the rafters.

In cases with a sarking board, the sarking felt is applied over the sarking board and held in place by the slates or counter–battens which are nailed through the felt to the sarking board.


Kooltherm K7 - Slating and Tiling

Slating and tiling over K7 Pitched Roof Boards is exactly the same as on any other pitched roof except that in some instances the slate / tile battens are fixed to the previously applied counter–battens. It is, however, essential that slate or tiling rubble does not lie in contact with the breathable sarking membrane (if used) as this may allow wind driven rain or melted snow to penetrate the breathable sarking membrane.

Surface Treatment

K7 has a foil faced durable surface and no further treatment is necessary. However, K7 is not intended to provide an internal finish and should be underlined with a suitable building board.

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 Kooltherm K7 boards should be protected against inclement weather.


Manufacturer's Contact Details

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.

Our Contact Details

www.just-insulation.com

Insulation Online Limited, 27 Massetts Road, Horley, Surrey, RH6 7DQ

Telephone: 0333 9000 989

Facsimile: 0333 7000 797

Email: enquiries@just-insulation.com

Web site: www.just-insulation.com

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