Kingspan Insulation Kooltherm K5 phenolic external wall board Kingspan Insulation

Kingspan Kooltherm K5

High performance rigid Phenolic external wall insulation board

Suitable for use behind traditional and lightweight polymer modified renders.

Unaffected by air infiltration. Resistant to the passage of water vapour.

Easy to handle and install; ideal for new build and refurbishment projects.

Faced on both sides with a glass tissue based facing, autohesively bonded to the insulation core during manufacture.

Zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).

Thicknesses and Availability:

Available in most popular thicknesses from the manufacturer; short lead-times apply as we may need to get the products in from Kingspan before delivering to site.

This Kooltherm Range includes the following readily available product thicknesses: 20mm, 50mm, 60mm and 70mm.

The following thicknesses are manufactured to order and may have minimum order requirements: 30mm, 40mm, 55mm, 80mm, 90mm, 100mm and 120mm.


Product Information

General information about Kingspan Kooltherm K5

Product Application

External wall insulating board for render systems

Kingspans high performance phenolic foam board, Kooltherm K5, is suitable for use in external wall applications with render systems.

Product Make-up

Core

Kingspan Kooltherm K5 External Wall Board is a high performance rigid thermoset modified resin insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP)

Facings

Faced on both sides with a glass tissue based facing, autohesively bonded to the insulation core during manufacture

Product Properties

Thermal Conductivity 0.023 W/m·K (insulant thickness > 25 mm)
0.021 W/m·K (insulant thickness 25 – 44 mm)
0.020 W/m·K (insulant thickness ≥ 45 mm)
Compressive Strength 120 kPa at 10% compression BS EN 826: 2013
Nominal Density 39 kg/m³
Board Length 1.2m
Board Width 0.6m
Board Edge Square
Vapour Resistance > 300 MNs/gm BS EN 12086: 1997 / I.S. EN 12086: 1998

Product Prices

Buy Kingspan Kooltherm K5

The prices and quantity discounts below are 'per pack' rates. Packs contain multiple boards... 10 x 0.6x1.2m = 7.2m² - in this instance, there are 10 x boards in a pack where each board is 0.6m x 1.2m providing a total coverage of 7.2m² per pack.

Rarely requested product sourced directly from manufacturer. Kingspan K5 20mm, 25 x 0.6x1.2m = 18m² - ranging from £9.64 to £10.09 per m²

1 x pack @ £10.09 per m² / £7.27 per board = £181.64 (£217.97 inc-VAT) per pack
2 x packs @ £10.00 per m² / £7.20 per board = £180.03 (£216.04 inc-VAT) per pack
3 x packs @ £9.91 per m² / £7.14 per board = £178.43 (£214.12 inc-VAT) per pack
4 x packs @ £9.82 per m² / £7.07 per board = £176.82 (£212.18 inc-VAT) per pack
5 x packs @ £9.73 per m² / £7.01 per board = £175.21 (£210.25 inc-VAT) per pack
6 x packs @ £9.64 per m² / £6.94 per board = £173.60 (£208.32 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan K5 50mm, 10 x 0.6x1.2m = 7.2m² - ranging from £15.82 to £16.56 per m²

1 x pack @ £16.56 per m² / £11.92 per board = £119.20 (£143.04 inc-VAT) per pack
2 x packs @ £16.41 per m² / £11.81 per board = £118.14 (£141.77 inc-VAT) per pack
3 x packs @ £16.26 per m² / £11.71 per board = £117.09 (£140.51 inc-VAT) per pack
4 x packs @ £16.12 per m² / £11.60 per board = £116.03 (£139.24 inc-VAT) per pack
5 x packs @ £15.97 per m² / £11.50 per board = £114.98 (£137.98 inc-VAT) per pack
6 x packs @ £15.82 per m² / £11.39 per board = £113.92 (£136.70 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan K5 60mm, 8 x 0.6x1.2m = 5.76m² - ranging from £19.26 to £20.15 per m²

1 plus packs @ £20.15 per m² / £14.51 per board = £116.07 (£139.28 inc-VAT) per pack
3 plus packs @ £19.97 per m² / £14.38 per board = £115.04 (£138.05 inc-VAT) per pack
5 plus packs @ £19.79 per m² / £14.25 per board = £114.01 (£136.81 inc-VAT) per pack
7 plus packs @ £19.62 per m² / £14.12 per board = £112.99 (£135.59 inc-VAT) per pack
9 plus packs @ £19.44 per m² / £14.00 per board = £111.96 (£134.35 inc-VAT) per pack
11 plus packs @ £19.26 per m² / £13.87 per board = £110.93 (£133.12 inc-VAT) per pack

Rarely requested product sourced directly from manufacturer. Kingspan K5 70mm, 6 x 0.6x1.2m = 4.32m² - ranging from £22.48 to £23.52 per m²

1 plus packs @ £23.52 per m² / £16.93 per board = £101.59 (£121.91 inc-VAT) per pack
3 plus packs @ £23.31 per m² / £16.78 per board = £100.69 (£120.83 inc-VAT) per pack
5 plus packs @ £23.10 per m² / £16.63 per board = £99.79 (£119.75 inc-VAT) per pack
7 plus packs @ £22.89 per m² / £16.48 per board = £98.89 (£118.67 inc-VAT) per pack
9 plus packs @ £22.69 per m² / £16.33 per board = £98.00 (£117.60 inc-VAT) per pack
11 plus packs @ £22.48 per m² / £16.18 per board = £97.10 (£116.52 inc-VAT) per pack

Limited stock of the most popular boards sizes may be held at some of our larger depots.

Where products need to be brought in from Kingspan, please allow approx. 1 week for delivery on stocked items (highlighted in green below in the properties section) and up to 3 weeks on made to order thicknesses. While Kingspan keep the majority of the popular thicknesses in stock, less popular thicknesses may carry a minimum order level.

Kingspan reserves the right to change stocked products - while we will do all we can to keep on top of changes, availability and lead times my vary.

Please observe the 'Star Rating' indicators to assess availability.
Product Availability Excellent Generally 1 or 2 days for delivery
Product Availability Good Generally 1 to 5 days for delivery
Product Availability Fair Generally 5 to 10 days for delivery
Product Availability Poor Generally 5 to 15 days for delivery
Product Availability Undetermined Please call to check availability and approximate lead times

Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations


Product Performance and Guides

Product Performance, Manufacturer Certification, Downloads, and Installation Guides

Thermal Resistance

While we have provided Thermal Resistance values for all thicknesses on the Kingspan K5 datasheet, some thicknesses may not be readily available.

Items highlighted in green are generally held in stock by Kingspan.

Product Thickness Thermal Resistance kg/m²
Kingspan K5 20mm 20mm 0.85 m²K/W 0.94 kg/m²
Kingspan K5 30mm 30mm 1.40 m²K/W 1.34 kg/m²
Kingspan K5 40mm 40mm 1.90 m²K/W 1.74 kg/m²
Kingspan K5 50mm 50mm 2.50 m²K/W 2.14 kg/m²
Kingspan K5 55mm 55mm 2.75 m²K/W 2.34 kg/m²
Kingspan K5 60mm 60mm 3.00 m²K/W 2.54 kg/m²
Kingspan K5 70mm 70mm 3.50 m²K/W 2.94 kg/m²
Kingspan K5 80mm 80mm 4.00 m²K/W 3.34 kg/m²
Kingspan K5 90mm 90mm 4.50 m²K/W 3.74 kg/m²
Kingspan K5 100mm 100mm 5.00 m²K/W 4.14 kg/m²
Kingspan K5 120mm 120mm 6.00 m²K/W 3.32 kg/m²

Standards & Approval

Kingspan Kooltherm K5 External Wall Board is manufactured to the highest standards under a management system certified to BS/I.S. EN ISO 9001:2015 (Quality managementsystems. Requirements), BS / I.S. EN ISO 14001 : 2015 (Environmental Management Systems. Requirements) and BS / I.S OHSAS 18001: 2007 (Health and Safety Management Systems. Requirements with guidance for use).

National BIM Library

Insulated Render Systems

  • Because insulated render systems are proprietary and utilise different mechanisms for attaching insulation to the wall structure, sitework guidance should be sought from the render system manufacturer. However, in the absence of any other guidance, the instructions laid out below may be followed.
  • The external masonry wall should be clean, flat, and free from protrusions
  • Where an uneven surface remains, it is recommended that a bedding compound can be applied prior to fixing the insulation boards.
  • External wall insulation should start 150 / 200 / 600* mm below the top surface of the ground floor insulation / perimeter insulation upstand (whichever is higher) for a concrete floor, or 200 mm below the top surface of the ground floor insulation / perimeter insulation upstand (whichever is higher) for a suspended timber floor.
    * 150 mm applies to the UK. 200 mm applies to the Republic of Ireland if a row of insulating blockwork (thermal conductivity < 0.20 W/m. K) is used, otherwise 600 mm applies.
  • Insulation boards should be installed break–bonded, with joints lightly butted.
  • Care should be taken to install the specified thickness of insulation around reveals
  • Boards of Kingspan Kooltherm K5 External Wall Board are mechanically fixed to the exterior of masonry external walls, preferably using thermally broken telescopic tube fasteners.
  • A minimum of 5 fixings are required to secure an insulation board to the masonry wall.
  • Board edges at openings and external corners should be fixed with fasteners at minimum 300 mm centres.
  • Fasteners at board edges must be located > 50 mm, and < 150 mm, from edges and corners of the board, and not overlap board joints.
  • The requirement for additional fixings is dependent on the render system being applied and the type of fixing being used.
  • Wherever possible, care should be taken to avoid cold bridging when attaching services and ancillaries to the exterior of the building.
  • Depending on the render finish being applied, advice must be sought from the render manufacturer on the EML / glass fibre mesh and bedding mortar to be applied.
  • In refurbishment projects, sill extenders and flashings should be used around openings, with care taken to avoid cold bridging.
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