With thermal conductivity as low as 0.020W/m.K rigid phenolic insulation is the most thermally efficient insulation product commonly available;
Phenolic insulation is manufactured by a process in which a plastic foam forms an insulating core between two flexible tissue faced layers. It has a high closed cell content and fine cell structure.
Wetherby recommend Phenolic boards are always kept dry, should you choose to use this thermal board with any thin coat render systems you must also fully bed the boards using Wetherby bedding adhesive as well as your usual mechanical fixing method. Please contact our technical team for further information.