CE 3.4: Roofing Membrane is Defective

Membrane system must be installed in a good workmanlike manner free from damage and shall meet the requirements of the Ontario Building Code and the design.

One -Year – Work and Materials. Two-Year - Building Envelope Water Penetration. Damage resulting from improper maintenance or additions, deletions or alterations made by the homeowner is excluded from the statutory warranty.

Membrane systems not meeting the acceptable condition shall be repaired.

Membrane thickness, number of layers, reinforcing etc. are generally defined by the manufacturer’s specifications if not covered by the design documents. These attributes affect the durability of the system.