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What Flue Type?
If you are unsure as to the type of flue you have you must get this checked prior to purchasing your gas fire by a GAS SAFE REGISTER installer. As part of our installation service we offer a site survey for a small fee – this fee being fully refundable against our installation cost when you proceed with our quotation in full. For more details on fitting see our ’about us’ page sub link ‘Fitting Service’.
Brick Chimney: this is usually a visible brick/stone built conventional chimney breast (in two storey buildings it will be in the room above – although may be slightly narrower in width upstairs) and there will be a stack on the roof with pot. Solid fuel can be burned in this type of flue. There is a vast selection of gas fires available for this type of flue. Open pots may require a gas cowl to stop birds & debris falling down the flue & to help against rain coming down the flue.
Pre-fabricated flue: this type of flue is generally made of a metal flue liner with a gas collection box in the fire opening. Often a small false breast will be visible in the room or outside wall to allow for the depth of the gas collection box. This type of flue should not be confused with a pre-cast flue which have very similar if not the same metal terminals with cowls. The are lots of gas fires that can be fitted into this flue type – although the diameter of the flue pipe will restrict certain models.
Pre-cast flues: this type of flue is usually built into the wall, so the wall will be flat or sometimes a very shallow breast will protrude into the room. The flue is built in blocks that go up the inside of the wall to the loft, where a header block will be found followed by a metal gas flue pipe of usually 5” diameter. The metal pipe travels out onto the roof & has a metal pipe with GC1 gas cowl.
No chimney: this means that the wall where you want to put the gas fire does not have any kind of flue. As long as the wall is an outside wall you can choose from a variety of balanced flued (glass fronted) or power flued (open) living flame gas fires. If you are replacing an existing balanced or power flued gas fire – you will need to replace the complete fire & flue system, you cannot use the old flue system with a new fire. With new builds often not incorporating flues these days, the number of balance and power flue fires has increased so that there is a good selection available – even hole in the wall style!
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