Kingspan Kooltherm K5 Insulation
Premium phenolic external wall insulation board, supplied by Licata for render and EWI systems. Thermal conductivity as low as 0.021 W/mK.
Licata supplies Kingspan Kooltherm K5 External Wall Board, a premium performance rigid thermoset phenolic insulation board for external wall insulation on masonry walls, as part of complete Licata render and EWI systems. With a thermal conductivity as low as 0.021 W/mK, K5 delivers high thermal performance in a thinner board than most other insulants, ideal behind silicone, acrylic and polymer-modified renders on new build and refurbishment projects. Available from six branches across the UK.
Kingspan Kooltherm K5 supplied for render & EWI systems
Kingspan Kooltherm K5 External Wall Board is a premium performance rigid thermoset insulation, with a fibre-free phenolic core faced on both sides with a glass tissue based facing, autohesively bonded during manufacture. It is designed as an integral component of rendered external wall insulation systems on masonry walls.
With a thermal conductivity as low as 0.021 W/mK, K5 achieves demanding U-values with a thinner insulation thickness than many alternative insulants: valuable where space, reveal depths or planning constraints limit how far a wall can be built out. It is unaffected by air infiltration, resistant to the passage of water vapour, and suitable for use behind both traditional and lightweight polymer-modified renders, making it ideal for new build and refurbishment alike.
As a Kingspan stockist, we supply Kingspan Kooltherm K5 as the insulation layer within complete external wall insulation systems and render systems, combining the board with the basecoat, fibreglass mesh and silicone or acrylic render finish needed for a durable, weatherproof facade. Buy Kingspan K5 from any of our six UK branches, with technical and specification support from our team.
Why specify Kooltherm K5?
Premium Thermal Performance
Thermal conductivity as low as 0.021 W/mK, with high performance achieved in a thinner board than most other insulation materials.
Thinner Build-Up
Achieves target U-values at reduced thickness, valuable where reveal depths, space or planning limit how far the wall can extend.
Rigid Thermoset Phenolic
A premium performance rigid thermoset, fibre-free phenolic insulant core with glass tissue facings bonded both sides.
Unaffected by Air Infiltration
Thermal performance is not degraded by air movement through the construction.
Water Vapour Resistant
Resistant to the passage of water vapour, supporting moisture control within the wall build-up.
New Build & Refurbishment
Suitable for use behind traditional and lightweight polymer-modified renders on both new build and refurbishment projects.
Resistant to Mould & Vermin
The core and facings resist attack by mould and microbial growth and provide no food value to vermin.
Quality Assured
Manufactured under management systems certified to ISO 9001, ISO 14001, ISO 45001, ISO 50001 and ISO 37301, and used as an integral component of several BBA / NSAI Agrement certified rendered EWI systems.
How Kooltherm K5 is installed
K5 is mechanically fixed to the exterior of masonry walls as part of a proprietary insulated render system. Because render systems differ, always follow the render system manufacturer's accredited installation guidance.
The masonry wall should be clean, flat and free from protrusions, with a bedding compound applied where the surface is uneven.
Specification
Technical data for Kingspan Kooltherm K5 External Wall Board. Always refer to the current Kingspan datasheet and DoP for the full specification.
Fire performance & building height
Kingspan Kooltherm K5 achieves Euroclass C-s2,d0 when classified to EN 13501-1. As a combustible insulant, there are potential restrictions on its use that vary depending on building type, height, construction and location. For buildings over 11 metres and other regulated cases, refer to current Building Regulations guidance and confirm the fire strategy and system-level certification with our technical team and the render system manufacturer before specifying.
R-values by board thickness
Thermal resistance (R-value) for standard insulant thicknesses. U-values for a specific construction should be calculated per project. Our technical team can assist.
| Insulant thickness (mm) | Thermal resistance (m²K/W) |
|---|---|
| 25 | 1.10 |
| 30 | 1.35 |
| 40 | 1.80 |
| 50 | 2.35 |
| 60 | 2.85 |
| 70 | 3.30 |
| 80 | 3.80 |
| 90 | 4.25 |
| 100 | 4.75 |
Refer to your local distributor or Kingspan Insulation for current stock and non-stock sizes.
A UK supplier of Kingspan Kooltherm K5
Licata is a supplier and stockist of Kingspan Kooltherm K5 insulation across the UK, holding stock at six branches in North London, West London, Kent, Essex, Birmingham and Manchester. Whether you need K5 board on its own or as part of a complete render or external wall insulation system, our team can advise on thicknesses, U-values, quantities and lead times.
Contact us for Kingspan K5 pricing, availability and specification support, or to open a trade account.
Kooltherm K5 FAQs
Need Kingspan Kooltherm K5?
Available from Licata branches across the UK as part of a complete render and external wall insulation system. Contact our team for pricing, thicknesses and specification support.