Roof To Wall Step Flashing Detail

Apron flashings if you are new to roofing or fitting roof flashings this really is a bread and butter place to start master this and the slightly more difficult flashings like step flashings will seem a lot easier. Step flashings are interwoven with the shingles and act essentially as shingles with an upturned leg to allow a transition of the vertical drainage plane of the wall to the drainage plane of the roof. Nrca berg points out that while continuous metal flashing is used at wall junctures in certain steep slope roof installations special flashing installation details are required that are different from a step flashing sealed roof and even when installed according to specifications this approach can leave the roof vulnerable to leaks or moisture damage from wind driven rain.

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Stepped flashing is used where a sloped shingled roof intersects a vertical wall.

Roof to wall step flashing detail.

Small flashing pieces must be woven into the shingles as you work your way up the roof. N at roof to wall intersections see figure 1. Even if one piece of step flashing fails the flashing and shingle below it start the process over again. Kickout flashing keeps water out of walls rain should run off the roof and into the gutter.

At the bottom of the roof water needs to be directed. Multiple pieces of the flashing will be installed in layers with shingles to ensure the water flows away from the wall. It is used for roof to wall flashing. How to install roof flashing against a wall.

Continuous flashing against a sidewall is one way to install a roof but it s not the correct way. N use flashing cement at joints to help secure flashing. N use step flashing that has a 2 to 4 inch lon ger vertical leg than normal. Step flashing protects the interface between a roof and a wall.

N do not seal housewrap or building paper to step flashing. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley. So we instruct our roofers to run the ice barrier membrane and the roof underlayment up the sidewalls. Learn how to install it below.

Step flashing step flashing redirects the water back onto the shingle. Wind driven rain and snow can penetrate between step flashing pieces and wet the sidewalls and the roof. When fitting cover flashings to a flat roof like the. Step flashing is a rectangular piece of flashing bent 90 degrees in the center.

Click pic to enlarge the video below will show you how to fit lead roof flashing like the ones seen in the picture above. Step flashing protects the gap where roofs meet walls by weaving into the roof shingles. We ask for 6 inches up the wall. N tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape.