Internal Corner
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Double Corners
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From an internal or external corner or to a boundary alongside the
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From a surface or a boundary facing the terminal (See Note 2)
600
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From a vertical flue terminal to an adjacent wall which includes an
opening window (See Note 3)
1000
Notes:
1. An opening here means an opening element, such as an openable window, or a
fixed opening such as a air vent. However, in addition, the outlet should not be
nearer than 150mm to an opening into the building fabric formed for the purpose
of accommodating a built in element, such as a window frame.
2. Boundary as defined in the Building Regulations (England & Wales) or the
Building Standards (Scotland) Regulations.
3. Where the wall adjacent to a vertical flue terminal includes an opening window,
the clearance between the terminal and any part of the opening window must
not be less than 1000 mm.
Page 11
Figure 4
11
