Kooltherm K3 Floorboard | Kingspan IE

Contact us: Kingspan Insulation; Kingspan Technical Insulation

Kingspan Ireland: Kingspan Insulation; Kingspan Technical Insulation

Legal information

Cookie Policy and Control

Terms & Conditions of Website Use

Website Privacy Notice

© 2026 Kingspan Holdings (IRL) Limited, All Rights Reserved

BACK TO TOP

Discover More

Home
Floor Insulation Boards
Kooltherm K3 Floorboard

Kingspan Kooltherm K3 Corner

Kooltherm K3 installed below the slab

Kooltherm K3 installed below the screed

Featured

Kooltherm K3 Floorboard

Kooltherm K3 is a premium performance floor insulation solution, for use with solid concrete or suspended timber floors. It has a thermal conductivity of as low as 0.021 W/mK and is ideal for both new build and refurbishment projects.

Product Highlights

Reach the required U-value with minimal thicknesses of insulation
Suitable for use in underfloor heating systems
Part of our Kooltherm range of premium performance insulation
Lightweight insulation that is easy to transport, handle and install compared to some other commonly used insulants

Contact Sales Team

Calculate U-value

kingspan-how-to-insulate-your-floor

A Guide on How to Insulate Your Floor

Insulating your floor helps reduce heating costs,10% of heat can be lost through uninsulated floors

Knowledge Article5 min read

Ballycotton House_Cork_02_k3_tf70-k8-optimr

Ballycotton House

This project used four of our advanced insulation products in its floor, wall and roof.

Case Study4 min read

Kingspan Avoidable Costs How Thinner Insulation Can Help Save Money On Overall Construction Costs Article 3:4

What is the performance gap?

What is the performance gap, what causes it and how can we prevent it?

Knowledge Article5 min read

What Are U-Values, R-Values And Lambda Values Article- 4:3

What are U-values, R-values and Lambda Values?

Lambda, R-values, U-values, Thermal Conductivity and Thermal Resistance simplified in one article

Knowledge Article4 min read

Frequently Asked Questions

What can we help you with?

Talk to us today

Request a U-value