How close can a flue be to a boundary?

A flue duct outlet can be angled away from the boundary so that the distance between the outlet and the boundary can be maintained to at least 600mm, provided that the shortest distance between the terminal and the boundary is not less that 300mm (see Figure 1 opposite).

How far does a gas flue have to be from a window?

30-60cm
The exact distance will depend on the size of your home but, generally, the regulations prevent a boiler flue from being situated within 30-60cm of a window or door. This is to prevent harmful gases from exiting the flue and then re-entering the property through an open door or window.

How high does a gas flue need to be?

Flue terminals should also typically be sited at least 600mm above flat roofs. Boiler flues should be positioned at least 75mm below any material that could be damaged by heat, such as guttering. They should also be at least 150mm to the side of vertical drain or soil pipes.

What is a balanced flue?

Unlike a conventional flue, a balanced flue allows air to enter from outside to supply the appliance with oxygen. In the case of a gas condensing boiler, the balanced flue contains two tubes: one tube lets oxygen in, the other tube lets waste gases out.

How far does a flue need to be above a roof?

The minimum chimney height recommended for minimum performance of wood burning and multi fuel appliances is 4.5 m from the top of the appliance to the top of the chimney. It is best to position the chimney, so that it goes straight up as near to the roof ridge as possible.

Are balanced flue gas fires safe?

A flueless gas fireplace is completely safe to have in your home. However, you must have them fitted strictly to the manufacturer’s instructions and meet all building requirements. It’s also essential that, once fitted, you maintain and operate your flueless fireplace correctly.

Does a balanced flue need a chimney?

Balanced flue gas fires are primarily designed to fit into rooms with no chimney. However, due to their benefits, many people with conventional class 1 chimney fires choose to convert to a balanced flue.

How long does a flue pipe need to be?

Building Regulations recommend a flue system of at least 4.5m in length to achieve this. An added benefit of attaining a certain height with your flue system is the improved draw this will create.

Can a balanced flue be horizontal?

Because balanced flues can also terminate horizontally this means that you are no longer restricted to a chimney or an outside wall.