Flashing 2 Roofs Together

A quick video on joining two roofs together.

Flashing 2 roofs together.

Next put the flashing between two roof pitches. Below are the steps on how to join two roofs together if they have different pitch. Put the lumber aside. When the roof materials naturally expand and contract with weather changes the two pieces can move so the whole system stays secure.

Slide the flashing under the highest roof pitch first and followed by the lower pitch. Step 6 install the flashing. Now nail this first flashing at both its far ends. To bend the flashing use a 2 by 4 lumber by pressing it gently until the flashing gets bent and matches the slope.

At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing. Place the 2 by 4 inch piece of lumber along the center of the flashing. To transition the eaves the horizontal fascia extends to the last rafter tail and a vertical return finishes the transition. Finish by nailing osb sheathing metal flashing metal drip edge and overlap the new shingles between two joined roofs.

Slide the right edge of the flashing under the highest roof pitch. There is another benefit to two part flashing. Roofs peel off from the edges so it is critical to hold them tight with the roof deck sealed on the outside we turn to flashing the edges with metal and membranes metal drip edge flashing image details roofing wrb 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.

The flashing materials will continue to be leak proof if they can withstand this movement of the roofing materials. The base flashing or apron flashing is the bottom piece. Two part flashing systems consist of a base flashing often step flashing that is laced into the finished roof material. Joining two roofs with different pitches.

This is where joining two pitched roofs together starts. Here on this roof in sheffield one roof is spanish slate and the other is man made slate. Position the flashing between the two roof pitches.