Std1e (Stove 150mm id Back Offset)

Technical drawing showing how to build a new external brick chimney for a stove using Isokern 150 mm internal diameter pumice liners with a back offset and support block. It specifies liner bends, a stainless steel adaptor, a steel collar for cut liners, and sealed joints using Isokern lip glue. The design includes a cast-in-situ lintel with a 240 mm opening, a support lintel, and a minimum 600 mm Class 1 flue pipe connection to the appliance above a superimposed hearth. Moisture and weather detailing is shown with lead flashing, a lead tray, weep holes, a damp-proof course, and 1:3 cement/sand flaunching at the top. A plan view gives key external stack dimensions (about 550 mm by 450 mm) and a 300 mm section reference.