Kingspan Kooltherm K121 Façade Board

• Low thermal conductivity of just 0.019 W/mK
• The thinnest commonly used insulation for rainscreen façades, allowing U-values to be met with minimal thickness
• Thinner walls can allow more natural daylight into your building
• Euroclass B-s2,d0
• Lightweight insulation that is easy to transport, handle and install compared to some other commonly used insulants
• Part of our Kooltherm range of premium performance insulation
• Our product awareness training is delivered by technical experts, who provide free onsite training and guidance 

Insulation for use behind façades.

What is the difference between Kooltherm and Therma?

Kooltherm is a range of phenolic insulation. It is the thinnest commonly used insulation board for any specific U-value. This means that you can benefit from reduced heating or cooling demand or use thinner boards to gain more space in your building.

Therma is a range of PIR insulation boards. It is not as thermally efficient as the Kooltherm range.

What is the U-value of Kingspan insulation?

U-value is the inverse of the sum of the thermal resistances of the layers that make up an entire building element – for example, a roof, wall or floor. The lower the U-value, the better insulated the building element. It also includes adjustments for any fixings or air gaps. Therefore, our insulation doesn't have a U-value on its own.

Our technical team can complete a U-value calculation for your project if you have a few specific details you can share about it. Just follow the link at the bottom of the page.

What is phenolic insulation?

Phenolic insulation, like our Kooltherm range of products, is the most thermally efficient insulation commonly used. It is made through a manufacturing process where a rigid thermoset foam forms an insulating core between two facing elements, for example, a low emissivity composite foil.

Choosing a phenolic insulation will make it easier to reach those low target U-values with a minimal thickness of insulation.

How is Kooltherm made?

Kooltherm's rigid thermoset foam forms an insulating core between two facing elements. At the start, a wet foam insulation mix is added to the bottom layer of the facing. It then expands to meet the top layer. As it dries, the foam bonds to the facings. The foam is then cooked under pressure before curing and hardening it. The insulation boards are then cut into the necessary sizes.