Residential Roof Flashing Details

Certain components as depicted in these details may not be provided by the roofing contractor.

Residential roof flashing details.

Where a slope roof meets a sidewall slip the upper legs of the step flashing under the sheathing wrap see illustration. With self adhering membrane is suggested prior to installation of sheet metal saddle flashing. Pre flashing the coping to wall termination with membrane flashing e g. Problem area number 3.

Flashing is installed to surround roof features such as vents chimneys and skylights. Eave flashing based on the author s experience this is one of the most common residential roof flashing defects of all time. The defect consists of the improper integration of the roof underlayment and the metal drip edge collectively referred to as the eave flashing figure 13. Click to enlarge make sure the sheathing wrap overlaps all step flashings.

Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer. Head flashings are used to direct water away from openings such as windows and doors. Common flashing details step flashing. All flashings must integrate with adjacent materials so water always flows to the exterior following the shingle principle.