Flashing Where Different Roofs Meet

Some roofs stop at a vertical wall.

Flashing where different roofs meet. This flashing comes in a v or w shape. By john carroll download the pdf version of this article. Joining two roofs of different pitches. Remember to caulk the underside of the flashing with a sealant.

There is another place that roof flashing has now invaded. This flashing may be behind wood siding or in front of a brick wall. Step 6 install the flashing. While installing flashing is not the most exciting part of roofing it is one of the critical components that a roof cannot do without.

Valleys are those areas of the roof where two sections of roof meet at a joint and form an angled dip. 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. If your flashing is new you may need a bonding primer. The flashing should extend over the shingles at least three inches.

Roof material changes direction. Place the 2 by 4 inch piece of lumber along the center of the flashing. Slide the right edge of the flashing under the highest roof pitch. Gently bend the flashing using the edge of the lumber.

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. Valleys are the number one area where shingles will erode and roof leaks will happen if valley flashing is not installed in them. 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. Step flashing ensures that water is directed away from the wall and ends up in the gutter. Roof flashing on a porch roof. At joints and penetration points.

The porch joined the house at right angles to a shed roof section. 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. Materials for roof flashing. Step flashing is best for where the roof face meets a wall for example where a dormer projects out of the roof.

It runs all the way down to the drip edge which it should overlap slightly. It is at the back of the porch roof where the roof meets the house siding. A metal flashing must be in place to direct water streaming down the wall away from the stopping point of the shingles. 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.