Gas Boiler Flue Through Conservatory Roof

In this case the flue goes upwards and then out through the roof.

Gas boiler flue through conservatory roof. Hi our boiler is in the kitchen and it s vent flue sits in the external kitchen wall at the front of the house. Most installers or roofing contractors will use a slate piece or a metal or lead piece that fits onto a flat or pitched roof with a gromit where the flue pipe goes through. We want to build a lean to style timber framed porch with a corrugated plastic roof along that wall creating light unenclosed porch veranda outside the kitchen windows but the vent flue will be under it maybe about 1ft from where the apex of the lean to meets the wall. The harmful gases are produced when the boiler is burning fuel which means that the gas exiting through the flue is hot so this needs to be taken into account when positioning the flue.

Gas safe eng tells me the parts are available and can be done fairly straightforward by working in sync with the conservatory installer. Keeping it away from any plastic gutters as they could end up melting is one of the considerations to be made here. Piping or ducting that gasses exhaust from a heating system or generator. If the flue terminal is more than 2 3m away from the taller main house then the flue does not need to rise above the main roof.

Definition of a boiler flue. If you have a gas boiler behind your fire. However to comply with the approved document j of the building regulations the flue still needs to rise a total height of at least 4 5m unless the appliance manufacturer specifies less. This is normal but the most important thing to remember here is that it won t seal if you do this while it s raining especially on a flat roof.