Flashing Roofing Felt

Flashing is installed to surround roof features such as vents chimneys and skylights.

Flashing roofing felt. Chalk lines should be snapped 33 5 8 above the eave line. The flashing shall be a minimum of 4 inches 102 mm high and 4 inches 102 mm wide. It provides backup protection in the event of ice or water damage. Fit felt around vent pipes or other protrusions by cutting it with a utility knife and fastening around the bottom of the vent.

The extra kick at the bottom of the face directs run off away from the structure. 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. There are two good ways to handle corner flashing. At the end of the vertical sidewall the step flashing shall be turned out in a manner that directs water away from the wall and onto the roof and or gutter while this is a nice diagram of how these flashings work don t forget our 5 th design rule.

Roofing felt helps ensure the water drains off the roof and doesn t leak into your home. Wind driven rain or snow can trap water under your shingles putting your roof deck and inner residence at risk of moisture damage leaks rot and mold. Although roof flashing is occasionally fabricated from plastic roofing felt or rubber it is usually made of rust resistant metal galvanized steel aluminum or copper. Many roofers will use flashing tape to seal cracks before securing shingles.

Beyond the dormer and cut the top section along the dormer edge. One of the benefits of the light weight tape is that it is conveniently rolled up making it easy to store and dispense and provides a mess free quick sealant that resists punctures and other damages. After this lines should be snapped every 34 as you move up the roof. Before laying roof felt all rotten decking must be replaced.

The main purpose of the drip edge is to direct the flow of water away from the fascia board and to help protect the rakes and eaves of your roof. Drip edges on the eaves any valley liners and all flashing should be installed before the tar paper is laid. Drip edge is a thin metal flashing that is applied to the edges of your roof underneath the shingles. Run the base flashing 4 to 5 in.

The first bending two pieces and caulking the joint photos 1 3 is the most common because you can do it on the spot with the flashing at hand. Galvanized sheet metal is most common but aluminum and copper find occasional use in specialty situations. Lay it over metal flashing edges around vents and pipes.