Specification History

If the roof is sliced open:

Install a solid metal ridge cap centered over the slice that overlaps each side of the roof by a minimum of 2"

Install a continuous, permanently flexible and durable sealant between the roof and the entire perimeter of the ridge cap

Install mechanical fasteners along the perimeter of the ridge cap every 6" or less that do not enter any framing material, prevent wrinkles and create a permanent seal

Apply a durable and flexible final roof coating over the screws and edge of the ridge cap to create a continuous seal between the roof and the perimeter of the ridge cap

For holes that are drilled or cut:

Prepare at least 6" of surface surrounding the opening by removing any material that will interfere with sealant adhesion

Install a durable metal patch of equal or greater gauge than the roof material that overlaps the opening by a minimum of 2" on all sides

Install a continuous bead of flexible and durable all-weather adhesive between the roof patch and the roof

Mechanically fasten patch along the perimeter every 2" without entering any framing material to prevent wrinkles and create a permanent seal

Install a durable and flexible 45 mil minimum adhesive roof patch in accordance with manufacturer specifications over the initial patch that overlaps the initial patch by a minimum of 2" on all sides ensuring surface temperatures are within manufacturer's guidelines for installation

Adhesive patch must meet the following minimum standards: Tensile strength of 640g, elongation of 380%, service temperature between -25 and 150 degrees F.

Apply a durable and flexible final coating (e.g., elastomeric paint) over the adhesive patch that laps at least 6" over the patch on all sides to create a continuous seal between the roof and the perimeter of the patch

Durable and weathertight roof closure