Gas Boiler Flue Through Conservatory Roof

Definition of a boiler flue.

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. 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. 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 sometimes called an insulated flue a twin wall flue is a flue pipe surrounded by a layer of insulation surrounded by another pipe. 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.

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. Keeping it away from any plastic gutters as they could end up melting is one of the considerations to be made here. 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. Piping or ducting that gasses exhaust from a heating system or generator.

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. 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. In this case the flue goes upwards and then out through the roof. Our gas boiler flue on the kitchen wall needs to be extended on the outside to go up through a planned conservatory roof.