Shopping Basket

Order before 10am for next working day delivery.  Subject to product availability locally, and vehicle delivery slots

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 thicknesses 50mm, 60mm, 70mm, 80mm, 90mm and 100mm. Manufactured to order are the following thicknesses 25mm, 30mm, 40mm, 45mm, 75mm, 85mm, 110mm, 120mm, 130mm and 140mm

Kingspan Kooltherm K15 Rainscreen cladding for external wall insulation

Product Applications

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


Drop-down price list / Add to shopping basket

Click to Buy: Kingspan K15 Phenolic Rainscreen Wall Boards - Foil Faced = Both Sides

Procedure: Select products below to see pricing structure | Use product tick-boxes to select required products | Add to Basket

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 25mm, 12 x 1.2x2.4m = 34.56m² - ranging from £7.54 to £7.89 per m²

1 x pack @ £7.89 per m² / £22.72 per board = £272.59 (£327.11 inc-VAT)
2 x packs @ £7.82 per m² / £22.52 per board = £270.18 (£324.22 inc-VAT)
3 x packs @ £7.75 per m² / £22.31 per board = £267.77 (£321.32 inc-VAT)
4 x packs @ £7.68 per m² / £22.11 per board = £265.36 (£318.43 inc-VAT)
5 x packs @ £7.61 per m² / £21.91 per board = £262.94 (£315.53 inc-VAT)
6 x packs @ £7.54 per m² / £21.71 per board = £260.53 (£312.64 inc-VAT)

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 30mm, 10 x 1.2x2.4m = 28.8m² - ranging from £8.32 to £8.70 per m²

1 x pack @ £8.70 per m² / £25.06 per board = £250.59 (£300.71 inc-VAT)
2 x packs @ £8.62 per m² / £24.84 per board = £248.38 (£298.06 inc-VAT)
3 x packs @ £8.55 per m² / £24.62 per board = £246.16 (£295.39 inc-VAT)
4 x packs @ £8.47 per m² / £24.39 per board = £243.94 (£292.73 inc-VAT)
5 x packs @ £8.39 per m² / £24.17 per board = £241.72 (£290.06 inc-VAT)
6 x packs @ £8.32 per m² / £23.95 per board = £239.51 (£287.41 inc-VAT)

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 40mm, 8 x 1.2x2.4m = 23.04m² - ranging from £9.89 to £10.35 per m²

1 x pack @ £10.35 per m² / £29.81 per board = £238.49 (£286.19 inc-VAT)
2 x packs @ £10.26 per m² / £29.55 per board = £236.38 (£283.66 inc-VAT)
3 x packs @ £10.17 per m² / £29.28 per board = £234.27 (£281.12 inc-VAT)
4 x packs @ £10.08 per m² / £29.02 per board = £232.16 (£278.59 inc-VAT)
5 x packs @ £9.98 per m² / £28.76 per board = £230.05 (£276.06 inc-VAT)
6 x packs @ £9.89 per m² / £28.49 per board = £227.94 (£273.53 inc-VAT)

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 45mm, 7 x 1.2x2.4m = 20.16m² - ranging from £10.80 to £11.30 per m²

1 plus packs @ £11.30 per m² / £32.54 per board = £227.81 (£273.37 inc-VAT) per pack
3 plus packs @ £11.20 per m² / £32.26 per board = £225.80 (£270.96 inc-VAT) per pack
5 plus packs @ £11.10 per m² / £31.97 per board = £223.78 (£268.54 inc-VAT) per pack
7 plus packs @ £11.00 per m² / £31.68 per board = £221.76 (£266.11 inc-VAT) per pack
9 plus packs @ £10.90 per m² / £31.39 per board = £219.75 (£263.70 inc-VAT) per pack
11 plus packs @ £10.80 per m² / £31.10 per board = £217.73 (£261.28 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 50mm, 6 x 1.2x2.4m = 17.28m² - ranging from £11.71 to £12.25 per m²

1 plus packs @ £12.25 per m² / £35.28 per board = £211.67 (£254.00 inc-VAT) per pack
3 plus packs @ £12.14 per m² / £34.97 per board = £209.80 (£251.76 inc-VAT) per pack
5 plus packs @ £12.03 per m² / £34.65 per board = £207.92 (£249.50 inc-VAT) per pack
7 plus packs @ £11.92 per m² / £34.34 per board = £206.05 (£247.26 inc-VAT) per pack
9 plus packs @ £11.82 per m² / £34.03 per board = £204.18 (£245.02 inc-VAT) per pack
11 plus packs @ £11.71 per m² / £33.72 per board = £202.31 (£242.77 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 60mm, 5 x 1.2x2.4m = 14.4m² - ranging from £13.96 to £14.61 per m²

1 plus packs @ £14.61 per m² / £42.08 per board = £210.40 (£252.48 inc-VAT) per pack
3 plus packs @ £14.48 per m² / £41.71 per board = £208.54 (£250.25 inc-VAT) per pack
5 plus packs @ £14.35 per m² / £41.34 per board = £206.68 (£248.02 inc-VAT) per pack
7 plus packs @ £14.22 per m² / £40.96 per board = £204.82 (£245.78 inc-VAT) per pack
9 plus packs @ £14.09 per m² / £40.59 per board = £202.95 (£243.54 inc-VAT) per pack
11 plus packs @ £13.96 per m² / £40.22 per board = £201.09 (£241.31 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 70mm, 4 x 1.2x2.4m = 11.52m² - ranging from £16.22 to £16.97 per m²

1 plus packs @ £16.97 per m² / £48.88 per board = £195.53 (£234.64 inc-VAT) per pack
3 plus packs @ £16.82 per m² / £48.45 per board = £193.80 (£232.56 inc-VAT) per pack
5 plus packs @ £16.67 per m² / £48.02 per board = £192.07 (£230.48 inc-VAT) per pack
7 plus packs @ £16.52 per m² / £47.59 per board = £190.34 (£228.41 inc-VAT) per pack
9 plus packs @ £16.37 per m² / £47.15 per board = £188.61 (£226.33 inc-VAT) per pack
11 plus packs @ £16.22 per m² / £46.72 per board = £186.88 (£224.26 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 75mm, 4 x 1.2x2.4m = 11.52m² - ranging from £17.33 to £18.14 per m²

1 plus packs @ £18.14 per m² / £52.24 per board = £208.94 (£250.73 inc-VAT) per pack
4 plus packs @ £17.98 per m² / £51.77 per board = £207.09 (£248.51 inc-VAT) per pack
7 plus packs @ £17.82 per m² / £51.31 per board = £205.24 (£246.29 inc-VAT) per pack
10 plus packs @ £17.66 per m² / £50.85 per board = £203.39 (£244.07 inc-VAT) per pack
13 plus packs @ £17.49 per m² / £50.39 per board = £201.54 (£241.85 inc-VAT) per pack
16 plus packs @ £17.33 per m² / £49.92 per board = £199.69 (£239.63 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 80mm, 4 x 1.2x2.4m = 11.52m² - ranging from £18.43 to £19.28 per m²

1 plus packs @ £19.28 per m² / £55.52 per board = £222.09 (£266.51 inc-VAT) per pack
4 plus packs @ £19.11 per m² / £55.03 per board = £220.12 (£264.14 inc-VAT) per pack
7 plus packs @ £18.94 per m² / £54.54 per board = £218.15 (£261.78 inc-VAT) per pack
10 plus packs @ £18.77 per m² / £54.05 per board = £216.19 (£259.43 inc-VAT) per pack
13 plus packs @ £18.60 per m² / £53.56 per board = £214.22 (£257.06 inc-VAT) per pack
16 plus packs @ £18.43 per m² / £53.07 per board = £212.26 (£254.71 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 85mm, 3 x 1.2x2.4m = 8.64m² - ranging from £19.41 to £20.31 per m²

1 plus packs @ £20.31 per m² / £58.48 per board = £175.45 (£210.54 inc-VAT) per pack
4 plus packs @ £20.13 per m² / £57.97 per board = £173.90 (£208.68 inc-VAT) per pack
7 plus packs @ £19.95 per m² / £57.45 per board = £172.34 (£206.81 inc-VAT) per pack
10 plus packs @ £19.77 per m² / £56.93 per board = £170.79 (£204.95 inc-VAT) per pack
13 plus packs @ £19.59 per m² / £56.41 per board = £169.24 (£203.09 inc-VAT) per pack
16 plus packs @ £19.41 per m² / £55.90 per board = £167.69 (£201.23 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 90mm, 3 x 1.2x2.4m = 8.64m² - ranging from £20.40 to £21.35 per m²

1 plus packs @ £21.35 per m² / £61.48 per board = £184.43 (£221.32 inc-VAT) per pack
4 plus packs @ £21.16 per m² / £60.93 per board = £182.80 (£219.36 inc-VAT) per pack
7 plus packs @ £20.97 per m² / £60.39 per board = £181.17 (£217.40 inc-VAT) per pack
10 plus packs @ £20.78 per m² / £59.85 per board = £179.54 (£215.45 inc-VAT) per pack
13 plus packs @ £20.59 per m² / £59.30 per board = £177.90 (£213.48 inc-VAT) per pack
16 plus packs @ £20.40 per m² / £58.76 per board = £176.27 (£211.52 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 100mm, 3 x 1.2x2.4m = 8.64m² - ranging from £22.35 to £23.38 per m²

1 plus packs @ £23.38 per m² / £67.34 per board = £202.01 (£242.41 inc-VAT) per pack
4 plus packs @ £23.17 per m² / £66.74 per board = £200.22 (£240.26 inc-VAT) per pack
7 plus packs @ £22.97 per m² / £66.14 per board = £198.43 (£238.12 inc-VAT) per pack
10 plus packs @ £22.76 per m² / £65.55 per board = £196.64 (£235.97 inc-VAT) per pack
13 plus packs @ £22.55 per m² / £64.95 per board = £194.86 (£233.83 inc-VAT) per pack
16 plus packs @ £22.35 per m² / £64.36 per board = £193.07 (£231.68 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 110mm, 2 x 1.2x2.4m = 5.76m² - ranging from £24.32 to £25.45 per m²

1 plus packs @ £25.45 per m² / £73.29 per board = £146.58 (£175.90 inc-VAT) per pack
5 plus packs @ £25.22 per m² / £72.65 per board = £145.29 (£174.35 inc-VAT) per pack
9 plus packs @ £25.00 per m² / £72.00 per board = £143.99 (£172.79 inc-VAT) per pack
14 plus packs @ £24.77 per m² / £71.35 per board = £142.69 (£171.23 inc-VAT) per pack
19 plus packs @ £24.55 per m² / £70.70 per board = £141.39 (£169.67 inc-VAT) per pack
24 plus packs @ £24.32 per m² / £70.05 per board = £140.10 (£168.12 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 120mm, 2 x 1.2x2.4m = 5.76m² - ranging from £26.28 to £27.49 per m²

1 plus packs @ £27.49 per m² / £79.18 per board = £158.36 (£190.03 inc-VAT) per pack
5 plus packs @ £27.25 per m² / £78.48 per board = £156.96 (£188.35 inc-VAT) per pack
9 plus packs @ £27.01 per m² / £77.78 per board = £155.56 (£186.67 inc-VAT) per pack
14 plus packs @ £26.76 per m² / £77.08 per board = £154.16 (£184.99 inc-VAT) per pack
19 plus packs @ £26.52 per m² / £76.38 per board = £152.76 (£183.31 inc-VAT) per pack
24 plus packs @ £26.28 per m² / £75.68 per board = £151.36 (£181.63 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 130mm, 2 x 1.2x2.4m = 5.76m² - ranging from £28.25 to £29.56 per m²

1 plus packs @ £29.56 per m² / £85.14 per board = £170.28 (£204.34 inc-VAT) per pack
5 plus packs @ £29.30 per m² / £84.39 per board = £168.77 (£202.52 inc-VAT) per pack
9 plus packs @ £29.04 per m² / £83.63 per board = £167.26 (£200.71 inc-VAT) per pack
14 plus packs @ £28.78 per m² / £82.88 per board = £165.75 (£198.90 inc-VAT) per pack
19 plus packs @ £28.52 per m² / £82.13 per board = £164.25 (£197.10 inc-VAT) per pack
24 plus packs @ £28.25 per m² / £81.37 per board = £162.74 (£195.29 inc-VAT) per pack

Rarely requested product sourced directly, possibly manufactured to order.. Kingspan K15 140mm, 2 x 1.2x2.4m = 5.76m² - ranging from £30.22 to £31.62 per m²

1 plus packs @ £31.62 per m² / £91.06 per board = £182.12 (£218.54 inc-VAT) per pack
5 plus packs @ £31.34 per m² / £90.26 per board = £180.51 (£216.61 inc-VAT) per pack
9 plus packs @ £31.06 per m² / £89.45 per board = £178.90 (£214.68 inc-VAT) per pack
14 plus packs @ £30.78 per m² / £88.65 per board = £177.29 (£212.75 inc-VAT) per pack
19 plus packs @ £30.50 per m² / £87.84 per board = £175.67 (£210.80 inc-VAT) per pack
24 plus packs @ £30.22 per m² / £87.03 per board = £174.06 (£208.87 inc-VAT) per pack

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

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 Advantages

    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 Specifications

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).


  • Kingspan TW53

    Kingspan TW53 designed for wall insulation to be used behind traditional and lightweight polymer modified renders

    Click for more information

    Kingspan TW53 wall insulation behind traditional and lightweight polymer modified renders
  • Celotex FR5000

    Celotex FR5000 is ideal for external masonry wall that requires the benefits of increased fire resistance protection

    Click for more information

    Celotex FR5000 partial fill cavity wall offers increased fire resistance protection
  • Kingspan TW50

    Kingspan ThermaWall TW50 is a cut-down (0.45 x 1.2m) version of the TP10, TF70 & TW55, general application boards.

    Click for more information

    Kingspan TW50 is a cut-down (0.45 x 1.2m) version of TP10, TF70 and TW55
  • Celotex CW4000

    Celotex Cavity Wall boards are cut-down (0.45 x 1.2m) versions of the TB4000, GA4000 & XR4000 general application boards.

    Click for more information

    Celotex Cavity Wall boards are cut-down versions of the  general application boards TB4000, GA4000 & XR4000

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

Insulation Online Limited

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

Telephone: 0333 9000 989

Telephone: 01293 781252

Facsimile: 0333 7000 797

Email: enquiries@just-insulation.com