Boiler Flues Through Roofs

In a modern fan assisted condensing boiler the boiler flue could just as easily be described as an air flue gas duct as it has two separate channels for gases and serves two functions.

Boiler flues through roofs.

Typically this applies when your boiler burns solid fuels. You see if you ve got a boiler in your attic and the flue goes through the roof there s a chance it could get bashed or pulled on accidentally when you re up there. In 2015 for example a contractor re roofing a flat roof above a flat in paignton devon was fined 2 000 plus legal costs for failing to reconnect a flue to the boiler. The fault was only detected after the resident had contacted a gas safe engineer to inspect what they thought was a faulty boiler.

A reputable engineer will follow manufacturer s instructions when fitting your vertical boiler flue with respect to the length and other things currently on your roof. Flashing kits flashing plates and weather collars in the range can be made of sheet metal plastic or composite materials and. The majority of boiler flues exit out of a wall horizontally but if the flue from your boiler comes out at roof level then there are also some regulations that need to be considered. Boiler flue flashing products are typically used when installing a vertical flue kit through a flat or angled roof as it will provide a weather tight seal to the roof and stop any water leaking into the flue system.

In this case the flue goes upwards and then out through the roof. If your furnace has an afue rating below 90 percent it will most likely have a flue pipe that goes up through your roof. The engineer duly got in touch with hse. To expel the boiler s exhaust gases into the outside air where they are dispersed in the atmosphere.

Securing any joints with brackets will help to ensure your flue can withstand people banging a suitcase or accidentally knocking it without wobbling or coming loose. For instance some flues can run up to 6 metres and others up to 12 metres. That s because the combustion byproducts are in a gaseous form so the gases can float up through the flue pipe and out of your roof.