• Resources Header

    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 [...]

Asphalt Shingle Edges Are Curled Or Cupped

Article Number

5.10

Condition

ASPHALT SHINGLE EDGES ARE CURLED OR CUPPED

Acceptable Performance/Condition

Asphalt shingle edges and corners need not be completely flat. Edges and corners that curl or cup to expose the uncoloured portion of the shingle below are not acceptable.

Warranty

One-Year - Work and Materials. · Damage resulting from normal wear and tear is not covered by the statutory warranty.

Action

Shingles not meeting the acceptable condition shall be repaired.

Remarks

Adequate attic ventilation is necessary to prevent excessive solar heat buildup in the attic that can contribute to curling and cupping. Shingles on top of flashing may not adhere and can lift. See Also: 5.5 INADEQUATE ATTIC VENTILATION

    

share