Roof Flashing Construction Methods

This drip edge flashing provides protection from water damage along the eaves and rake of a roof.

Roof flashing construction methods.

As the deck interrupts the flow of water from above flashing that channels water around the ledger board is critical. To understand what makes a valley either closed or open it is important to understand how a valley is constructed. The extra kick at the bottom of the face directs run off away from the structure. Roof to wall and deck to wall flashing www fema gov technical fact sheet no.

Flashing insures water running down the siding doesn t come into contact with the sill which provides support for your homes framework. Two ways to flash roof edges. Decks are commonly attached to a house using a ledger board. One common method is to lay the edge metal under the eaves membrane and over the rake.

Protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. 23 roof to wall and deck to wall flashing home builder s guide to coastal construction page 1 of 3 purpose. Renew flashing seals by chipping out old caulking and mortar along the edges of the flashing. One of the details that varies between homes is the method of flashing the valley areas of the roof.

Gibraltar drip edge flashing can be used with asphalt shingles or metal roofing panels. Before the availability of sheet products for flashing builders used creative methods to minimize water penetration such as angling roof shingles away from the joint placing chimneys at the ridge building steps into the sides of chimneys to throw off water and covering seams between roofing materials with mortar flaunching. Take care not to place any fasteners in the exposed center area of the metal flashing. The edge of the roof has thin metal flashing that helps water drip off.

It s much easier to reseal the flashing than it is to patch a water stained wall or ceiling. Open valleys have metal flashing to protect this critical area of the roof. There are two common methods for completing the flashing of a valley in a shingle roof system. Recaulk the joints between the roof and the flashing.

Factors to consider such as the roof covering deck ends underlayment flashing and other components. To emphasize the importance of proper roof and deck flashing and to provide typical and enhanced flashing techniques for coastal homes. Fasten loose nails and cover exposed nail heads with roofing cement. Closed valleys or open valleys.

Details concrete masonry roofing wrb flashing.