Sometimes called an insulated flue a twin wall flue is a flue pipe surrounded by a layer of insulation surrounded by another pipe.
Flue pipe through conservatory roof.
Canal boats and caravans.
This is because they have an insulated layer that stops the outside of the pipe from becoming dangerously hot.
It means any pipe penetrating a roof must be three feet above the roof line on the up slope side of the penetration.
The good news is that it is safe to pass a flue pipe through a conservatory roof as long as you follow these steps use a twin wall flue.
If there is a steep roof or nearby obstruction the chimney will need more length above the roof to meet code.
It will not got as hot as a single wall flue and is therefore safe for use with the polycarbonate roof.
We offer a range of flexible roof flashings for the installation of a wide range of pipe sizes through a variety of roof types including flat tiles.
Well the answer is that it can be done by building a chimney using a special insulated flue called twin wall that goes straight out through the roof of the conservatory.
This is a graphical display of a typical freestanding 150mm diameter flue system.
With a polycarbonate roof you can usually not fix down into it so the answer is generally a rubber flashing with silicone sealed onto the roof panel.
Finally the flue needs to be weathered so as to prevent water ingress into the conservatory.
Typical single storey flue system flat ceiling with shallow pitch roof no roof cavity space.
Twin wall flue flashings are displayed within the relevant twin wall flue category pages.
When using a twin wall flue pipe it is perfectly safe for your flue to be built through your conservatory roof in fact twin wall pipe is designed specifically for this purpose.