Flashing Where Different Roofs Meet

Materials for roof flashing.

Flashing where different roofs meet.

Roof flashing on a porch roof. If your flashing is new you may need a bonding primer. It runs all the way down to the drip edge which it should overlap slightly. Today the flashing is on top of the siding.

Slide the right edge of the flashing under the highest roof pitch. Now nail this first flashing at both its far ends. In this spot it s possible that water could flow down the wall and slip past the shingles into the building below. There is another place that roof flashing has now invaded.

Step flashing ensures that water is directed away from the wall and ends up in the gutter. It is at the back of the porch roof where the roof meets the house siding. Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies. Valleys are those areas of the roof where two sections of roof meet at a joint and form an angled dip.

This flashing comes in a v or w shape. By john carroll download the pdf version of this article. Some roofs stop at a vertical wall. Remember to caulk the underside of the flashing with a sealant.

Roof material changes direction. This flashing may be behind wood siding or in front of a brick wall. The gibraltar building products l flashing protects your home the gibraltar building products l flashing protects your home from moisture infiltration where your wall meets your roof. The porch joined the house at right angles to a shed roof section.

Step 6 install the flashing. L shaped flashing is a versatile general use flashing used where a uniform or strengthened finish is needed on a 90 surface. Different types of materials cater to the different needs of homeowners. 489 78 kb my business partner and i recently added a large screened in porch with a gable roof onto a client s home.

While installing flashing is not the most exciting part of roofing it is one of the critical components that a roof cannot do without. At joints and penetration points. Place the 2 by 4 inch piece of lumber along the center of the flashing. Install valley battens on both ends of the roof valley then attach first flashing 3 4 inches over the roof flange and another 3 4 inches over the fascia if any is present.

Joining two roofs of different pitches. The flashing should extend over the shingles at least three inches. Step flashing is best for where the roof face meets a wall for example where a dormer projects out of the roof. Traditionally the flashing was installed and hidden under the siding.