UK Brick Sizes

When constructing model buildings, the thickness of walls can often be guided by thickness of the construction material (often card) when it should actually be a result of the size of the bricks used in the wall being modelled. Here are some typical UK brick sizes that may help has a guide to wall (and therefore construction material) thicknesses. All dimensions are in millimeters, first full size then scaled down to British N Gauge.

Actual sizes taken from: Hints and Things

	Length of brick (excluding joint) mm	Width of brick (excluding joint) mm	Height of brick (excluding joint) mm	Typical Joint mm
Metric	215.0	102.5	50	10
Metric	215.0	102.5	65	10
Imperial	225.0	107.5	68	10
Imperial	230.0	110	70	10
Imperial	230.0	110	73	10
Imperial	230.0	110	76	10
Imperial	230.0	110	80	10

In N Gauge:

	Length of brick (excluding joint) mm	Width of brick (excluding joint) mm	Height of brick (excluding joint) mm	Typical Joint mm
Metric	1.5	0.7	0.3	0.1
Metric	1.5	0.7	0.4	0.1
Imperial	1.5	0.7	0.5	0.1
Imperial	1.6	0.7	0.5	0.1
Imperial	1.6	0.7	0.5	0.1
Imperial	1.6	0.7	0.5	0.1
Imperial	1.6	0.7	0.5	0.1