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I have no chimney can I still have a stove?

In most cases you certainly can. In the industry it is mostly referred to as a twin wall flue, or insulated twin wall. Effectively it is a factory made metal flue system, with an inner metal stainless steel skin which carrys the flue gasses, surrounded by a insulation material (25-35mm in thickness) then finished with an outer skin of metal, most of the time in a black podwer coat finish.


What size will the flue be?

There are two common sizes of flue, they are referred to as 5icnh or 6inch, this relates to the internal dimension. the external dimension is aproximaely 175mm for a 5inch and 200mm for a 6inch twin wall flue system.

What colour will the flue be?

Most of our installations on insulated twinwall flue would be in a black powder coat finish, however, it is also available in a polished stainless steel colour.

Where will the flue exit?

The two options would be exiting through the roof or exiting through an exterior wall at 45 degrees.

How does the flue exit the wall?

Our team use a specialist diamond drilling rig to precisely diamond core a 45 degree aperture for the flue system to exit in an exterior wall, this is in a 225mm or 250mm diameter. Our specialist equipment prevents any disruption to the surrounding masonry work, giving a even clean aperture for the flue to exit.

How does the flue exit the roof in a single storey building?

The flue can exit the roof directly in a single storey building with either a flat ceiling or a sloped ceiling, it can also exit into a roof space/atic then finally exiting the roof. In this setup the flue as it protrudes either throguh ceiling ot ceiling into the roof space will have a cover plate which is designed to cover the space around the flue that is a required clearance of combustible materials such as plasterboard and timber. this plate can either be round for a flat ceiling or rectnagular for a pitched/sloped ceiling as it would be adjustable for the different angles.

How does the flue exit the roof in a multi storey building?

If the flue is to exit in a mutli storey building, this will likely be passing through a bedroom for example, the flue would need to be enclosed in a timber stud and plasterboard structure maintaining the required distances to combustible materials used in the structure. The enclosue is ventilated to allow warm air to escape and not build up. The ceiling in the room will be finished with a ventilated fire stop plate with a decorative masking plate to cover this. The enclosed structure will also be ventilated with the ventilated fire stop plate, however, would not have the masking cover plate as it would not be visible inside the enclosure. If the flue passing through an accessable attic space, the flue will be protected with a metal cage to prevent items from coming into contact with the flue system.

What supports the insulated twin wall flue system?

The insulated twin wall flue is supported by various brackets, the brackets used are dependant on the location, whether it is hidden in a roof space or affixed to a wall. Rule of thumb, you will need at least two points of support as a minimum.

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