Kingspan Kooltherm K5 phenolic foam external board offers outstanding external insulation for masonry walls. This Kingspan insulation board is suitable for use behind traditional and lightweight external renders. Kooltherm K5 is unaffected by air infiltration preventing any extra heating and cooling costs and resistant to the passage of water vapour minimising the chances of dampness and condensation. This Kingspan insulation board is perfect for new builds and refurbishment jobs alike. It is safe and easy to install - masks are not required, as Kingspan insulation products do not produce loose dust or irritable fibres and comes in a selection of different sizes. Please get in touch if you have any further questions. The K5 is aailable in the following thicknesses: 20mm 40mm 50mm 60mm 70mm 80mm Contact us today.