Seledek aluminium roof flashings

Seldek flashings are ideal for twin wall flue penetrations through tiled, slated or shingled roofs. You use a Seldek flashing just like a traditional lead flashing. At the centre of the aluminium plate is a felxible EPDM collar which seals the flue pipe penetration and allows for some movement. Because of the EPDM collar you do not necessarily need a storm collar with a Seldek flashing. If your flue pipe has a seamed join in it then you do have to run a bead of silicone around the top of the collar, especially where the collar meets the seam. You should also run a bead of silicone up the seam to the top of the flue pipe to stop any water tracking down the seam of the flue pipe.

This Seldek flashing is suitable for twin wall flue with outside diameters of 160-300mm.