
Find your nearest stockist
Our insulation boards are stocked up and down the country. Use the interactive map to find your nearest stockist.
© 2026 Kingspan Holdings (IRL) Limited, All Rights Reserved







Thermawall TW55 is an insulation for timber frame and steel frame walls. It has a thermal conductivity of 0.022 W/mK. Thermawall TW55 insulation boards are easy to cut, handle and install compared to some other commonly used insulants. They are available in a range of thicknesses.
Product Highlights
High performance thermoset polyisocyanurate (PIR) insulation - thermal conductivity 0.022 W/mK
Suitable for use with timber frame and steel frame wall constructions
Can be used between studs or as an insulating sheathing
Ideal for Modern Methods of Construction (MMC)