Masonry articulation joints

The requirements for masonry articulation joints are contained in the 2019 National Construction Code (NCC).

Where articulation is beside a window, it must extend from the damp-proof course, along the edge of the window to the top of the brickwork or soffit.

Joints must have a width of at least 10mm and must be adequately weatherproofed.

Builders should consult with their window suppliers during the specification and/or design stage to ensure joints are suitably flashed.

Note that articulation joints are not required on sites with A and S soil classifications.