Phoned around looking for a roof flashing for the flue in the workshop and they wanted £65 for one so had a look in the scrap alloy bin and knocked one up myself, luckily I had an offcut from the sheeting when I built the workshop to use as a template.
I will peel off the top sheet and fix that to the underside of the ridge and run it over the top edge of the flashing to keep it watertight along with a squirt of clear silicone.
Completed the workshop heater today 28 deg outside in the sun cant wait for winter.
Made a twinwall section 25mm air gap all around and 50 mm from any combustable material as it passes through the roof, also found out that the vermiculite which I used to fill the 25m gap compresses by 10% to combat this it was mixed with 10:1 with dry cement no sand this binds everything together and keeps it in place.
Aye well did say would have a hoose warmin when I got the completion and "I got the cert in me hand on Thursday" have a plumb tree that has been drying for two years for the smoker ye had better get stronger springs on the "bang bus!"
Hello Gents
We have refurbished a 1950s/60s duel fuel stove, its now ready to install. The workshop has a plyboard inner wall, rockwool insulation and Feather Edge Wooden cladding outside, the roof is some kind of strong plastic,not metal.
There are two options straight up through the roof, like yours Sam or a shart horizontal flue through the wall and up on the outside.
Through the roof means extra heat from the flue but is it OK passing through the Plastic??? type roofing.
Any advice and experience would be very acceptable, to help choose the right option.
Thank You All desmo11225
Desmo you are unlikely to get a reply from Sam as it says banned under his name and he has not posted for over 3 years!
You could always extend the flue higher and go through the wall further up using a 45 degree bend rather than a horizontal section.