Flashing Porch Roof To Asfault Roof

Vent flashing done right to prevent leaks back up roof vent boots with flashing counterflashing and proper shingling.

Flashing porch roof to asfault roof. Most flashing is 8 inches wide. Lay the cut flashing down at the corner over a shingle that is already in place. Position the flashing with the lower edges atop the carport roof panels along the transition. Gently hammer the 45 degree cut around the corner of the porch roof seam.

Nail the upper edges of the flashing to the roof sheathing where the shingles were removed with 6 penny. Flashing should overlap the roof covering material but on asphalt shingle roofs for aesthetic reasons the part of the headwall flashing that extends down over asphalt shingles is often covered with a course of shingle tabs. The wood beneath it is called the fascia board or rake of the gable the fascia board is colored in blue in the image above. You need to make a bend of 10 degrees one half inch from the edge.

Here s how to install it correctly. Open valleys have metal flashing to protect this critical area of the roof. Use a metal break tool to bend the flashing according to the angle of the roof joint. The decorative trim under the roof is not covered up with flashing.

Use the metal break tool to bend the flashing lengthwise in the middle according to the angle of the roof joint. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. Notice in the image above that the end of an asphalt roof extends outward just a bit covering and protecting the wood beneath it as it should. Cut the flashing with tin snips if you need to cut it.

Don t mistake this condition for headwall flashing routed beneath the shingles and call it a defect. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. Step 6 make a 10 degree bend on the shingle edge of the flashing approximately 1 2 inch from the edge. The corner cut should be facing upwards.