kingspan k5

Kingspan K5 Insulation (0.72m²)

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  • Size of boards: 1.2 x 0.6m
  • Premium performance rigid thermoset insulation
  • Suitable for use behind traditional lightweight polymer modified renders
  • Resistant to the passage of water vapour
  • Easy to handle and install
  • Ideal for new-build and refurbishment
  • K5 insulation is sold per board (per 0.72m²)

Kingspan K5 Insulation

Kingspan K5 insulation is a premium insulation board for external wall insulation systems. The insulation boards have a rigid phenolic core which offers excellent thermal capabilities, and is ideal for use with our thin coat renders to create a highly effective insulation system.

One advantage of Kingspan K5 insulation is that it has high compressive strength and is therefore ideal for applications where there is a high risk of mechanical impact. We recommend installing the insulation using our Premium Basecoat as an adhesive, and our metal screw fixings as a secondary method of securing the boards to the substrate.

Kingspan K5 insulation is made of high-quality phenolic foam. It’s CFC and HCFC free and has an ozone depletion potential of zero. Its environmental impact is therefore very low for a foam insulation material.

Technical Specification

  • Composition: phenolic insulation core faced on both sides with glass tissue
  • Thermal Conductivity: 0.020W/(m2K)
  • Reaction to Fire: Class 0
  • Size of boards: 1.2 x 0.6m
  • Thickness available: 20mm, 50mm, 60mm, 70mm
  • Compressive strength: 120kPa


K5 insulation boards should be installed in accordance with the manufacturer’s installation guidelines – these should cover design and all aspects of the application of the insulation. The boards are initially fixed to the substrate (masonry or timber) using our Premium Basecoat and metal screw mechanical fixings.

After having been fixed to an external wall, the Kingspan K5 boards should be covered with an outer layer, either by the mortar basecoat or simply by a netting covering to protect from excessive heat, moisture and UV exposure. A protective render topcoat should then be applied.


Shelf life: please see the manufacturer’s date of expiry. Keep in a dry place, in the original packaging. Avoid excess heat or UV light exposure.


20mm, 50mm, 60mm, 70mm


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