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Table A1 Flue and terminal installation options that are NOT to be considered

Flue and terminal positions that do not comply with Approved Document J of the Building Regulations.

A shared flue, unless specially designed to be shared by condensing boilers.

A flue passing through a wall or floor that must not be pierced for structural reasons.

An internal flue extension exceeding 4m (ignoring the part that passes through a loft/attic space).

A flue that passes through another dwelling, or another building in different ownership, or another fire compartment.

A vertical flue pipe visible on the outside of the building facing the main approach direction (usually the front). This refers only to the flue pipe, not the flue terminal (a terminal may be positioned on any side of the building).

Wall terminals that discharge under the roof of a car port.

Wall terminals with horizontal discharge less than 2.5m from any wall, fence, building or property boundary facing the terminal.

Wall terminals with horizontal discharge less than 2.5m from a car parking space and less than 2.1m above the ground.

Wall terminals less than 2.1m above the ground with horizontal discharge of the flue products across a public footway, route or a patio (hard surface area).