dick turpin Posted February 20, 2016 Share Posted February 20, 2016 (edited) Want to add a real fireplace on the ground floor of my new house. No problem as far as the fireplace goes, the real issue is with the chimney stack, which somehow has to circumvent the standard 1.20 metre over-hang of the roof. Don't really want to break through the roof. Any ideas or experience of such. Edited February 20, 2016 by dick turpin Link to comment Share on other sites More sharing options...
Thorgal Posted February 20, 2016 Share Posted February 20, 2016 (edited) You can use (minimal 4" : 114.3mm outside diameter) galvanised HVAC pipe by making a penetration in your wall. The pipe angles should normally not exceed 30 degrees. Provide a bird screen and rain canopy on top. Between the pipe sections I recommend to use Tectyl for heat application to avoid water ingress, air tight and rust at cutted sections. Picture below used 45 degrees elbows... Edited February 20, 2016 by Thorgal Link to comment Share on other sites More sharing options...
eyecatcher Posted February 20, 2016 Share Posted February 20, 2016 First rule of thumb for a chimney stack is keep it as straight as possible. With tight bends it sinply will not draw. Using Thorgals 45deg bends....which are too tight you need to be sweeping at a further 1.2 below the eaves which can be a hindrance on a single storey house.. You could use the above example and go through the overhang using the proprietory cloaking sleeve or build a masonry stack straight through with back gutters and the like Link to comment Share on other sites More sharing options...
dick turpin Posted February 21, 2016 Author Share Posted February 21, 2016 Thanks guys. Thinking in terms of a brick stack possibly incorporating HVAC pipe, but as mentioned the trick is to keep it as straight as possible. My Thai builder has got his head in the sand on this one. Link to comment Share on other sites More sharing options...
canuckamuck Posted February 21, 2016 Share Posted February 21, 2016 Thinking of adding a fireplace too. Hopefully this thread generates some helpful information. Thanks for starting it. Link to comment Share on other sites More sharing options...
Daffy D Posted February 21, 2016 Share Posted February 21, 2016 As long as the flashing between the chimney and roof is properly installed there should be no problem with a chimney going through the overhang. Been doing it in Farang land for centuries:- Link to comment Share on other sites More sharing options...
dick turpin Posted February 21, 2016 Author Share Posted February 21, 2016 Thanks Daffy for your input. That was my original thought, but since then the roof has been completed and frankly am glad have not broken-up its smooth lines.It's plan B am after. Link to comment Share on other sites More sharing options...
Gulfsailor Posted February 21, 2016 Share Posted February 21, 2016 Thanks Daffy for your input. That was my original thought, but since then the roof has been completed and frankly am glad have not broken-up its smooth lines.It's plan B am after. Put a stack fan on top? Link to comment Share on other sites More sharing options...
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