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    Construction Performance Guidelines

About the Guidelines

These helpful guidelines outline work and material deficiencies in new homes and residential condominium units covered under the statutory warranty [...]

Efflorescence (Typically a White Powder Film) is Present on Masonry Exterior Finishes

Article Number

4.17

Condition

EFFLORESCENCE (TYPICALLY A WHITE POWDERY FILM) IS PRESENT ON MASONRY EXTERIOR FINISHES

Acceptable Performance/Condition

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.

Warranty

One-Year - Work and Materials. · Efflorescence resulting from additions, deletions or alterations made by the homeowner or improper maintenance is not covered by the statutory warranty.

Action

If it is determined that a defect in work or material is the cause of the efflorescence, repairs shall be made.

Remarks

Efflorescence is the formation of a typically white crystalline deposit on the surface of masonry when moisture evaporates from the surface. Efflorescence can be removed using a stiff bristle brush and water. Dark-coloured bricks tend to exaggerate the appearance of efflorescence. Localized areas of efflorescence may be linked to abnormal sources of moisture. Salt and de-icers may also contribute to efflorescence and in that case the item is not warrantable. See Also: 1.1 EFFLORESCENCE (TYPICALLY A WHITE POWDERY FILM) IS PRESENT ON CONCRETE OR MASONRY FOUNDATION SURFACES

  

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