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Siding shall be installed to accommodate thermal movement and anticipated shrinkage of the structure to which it is attached. Siding shall be free from bows and waviness when installed in accordance with the manufacturer’s specifications. Local distortion from the specified plane shall not exceed 20 mm.

Aluminum or vinyl siding and associated trim and accessories shall not become displaced or detached from the substrate.

Fasteners that are used to secure aluminum or vinyl siding or trim may not match the siding or trim colour due to manufacturing limitations.

Cracks resulting from normal shrinkage are acceptable; crack width in excess of 2 mm is not acceptable.

Cut bricks used in the same course shall appear uniform from a normal viewing position; the variance in thickness between two immediately adjacent bricks shall not exceed 8 mm.

Horizontal masonry joint work shall appear uniform when viewed from a distance of 6 m. Where the horizontal (bed) joint appears out of alignment, the variance shall not be more than 12 mm from the specified plane. This does not apply to randomly sized masonry products.

Exterior masonry shall not have mortar splatters and stains detracting from the appearance of the finished wall when viewed from a distance of 6 m under natural lighting conditions when dry.

Efflorescence commonly occurs on masonry surfaces and is normal. Localized concentrations of efflorescence on above grade masonry veneer walls visible from no less than 6 m may not be acceptable and may require further investigation.

Masonry shall be manufactured and installed to prevent premature deterioration.

Openings in exterior walls such as windows and doors, and junctions between cladding materials, shall not allow water penetration.

Clay brick veneer shall be installed in accordance with the Building Code. Installed clay bricks that are visible as part of the cladding shall not be chipped in excess of the limits described in Appendix A6 “Chipped Clay Bricks”.

Brickwork may contain bricks from different dye lots, provided they are dispersed throughout the wall to produce a generally uniform appearance when viewed from 6 m under normal lighting conditions.

Stucco that relies on face-sealing to shed water shall have no cracks or gaps that will allow water penetration. Stucco on a drained cladding system shall not have unintentional gaps or cracks visible from a distance of not less than 6 m.

Stucco on exterior walls shall not separate from its base.

Gaps allowing water penetration into the building envelope shall be sealed in accordance with the Building Code.