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.

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...

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

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.

Thinking of adding a fireplace too. Hopefully this thread generates some helpful information.

Thanks for starting it.

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:-

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.

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?