ELV - T/04 Fakro 66cm x 118cm Slate Flashing with Thermal InsulationPlease note this product has 22mm of hidden insulation material around the perimeter of the flashing kit to improve the thermal performance. It is advised although not required to use an XDK underfelt collar & air tight flashing in conjunction with this product to achieve the maximum thermal performance. Description: A new slate flashing ELV-T Thermo with additional insulation is an ideal solution which guarantees tight and warm connection of the window with the roof covering. ELV-T Thermo makes it possible to apply insulation of the window above the level of battens. To the inside of the flashing there is glued flexible insulating material which adheres tightly to window frame constituting a thermo-insulated frame. Thermo-insulating material has excellent insulting values (coefficient ’ ). Below the level of the battens the window is insulated by a wool insulating kit XDP. The introduced Thermo flashing enhances U value of the window up to 15% depending on the window type, thus avoiding thermal bridging and heat loss. The ELV-T Thermo is a slate flashing and can be used with all types of slate coverings up to 8mm profile depth and with all wooden as well as aluminium-clad plastic roof windows. It is applied as standard to individual windows in the slope of the roof. The flashing may also be used as module flashing for windows used in horizontal and vertical combinations or block groups.