Step Flashing Low Pitch Roof

Proper flashing design is the responsibility of the roof designer.

Step flashing low pitch roof.

Required tools for this project. Step flashing in steep slope roofing donald berg p e professional roofing nrca june 1993. Adequate research of flashing conditions and the use of proper flashing details is vital to the long term success of the roof system. Self adhesive flashing membrane under the shingles prevents leakage on low slope roofs.

Multiple pieces of the flashing will be installed in layers with shingles to ensure the water flows away from the wall. Place the top edge of the roofing along the chalk line. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many equivalent products. That flashing directs the water onto the shingle and the water drains down the roof.

Step flashing is a rectangular piece of flashing bent 90 degrees in the center. Roll out and cut roll roofing to cover the length of the roof. More product details close. Step flashing protects the gap where roofs meet walls by weaving into the roof shingles.

L shaped flashing is a versatile general use flashing used where a uniform or strengthened finish is needed on a 90 surface. It is used for roof to wall flashing. This should give you a 1 inch overhang on the eaves including the top edge of. Step flashing offers far better protection from leaks because even if a single piece of step flashing fails the water just hits the next lower piece.

Flashing problems account for the majority of roof leaks on low slope built up roof systems. L flashing can be cut into smaller lengths to use as step flashing. Then apply standard asphalt shingles over the membrane. Made with 28 gauge galvanized steel l flashing can play an essential part in protecting your home against water damage.

Above we show a feeble attempt at flashing and counter flashing at the roof wall intersection of a low slope roof. At the bottom of the roof water needs to be directed. The installer tacked a row of asphalt shingles to the wall caulked their top edge and hoped for the best. For a low slope residential roof there are two main options.

It is used for roof to wall flashing. The membrane will outlast the shingles and seal around all nail penetrations. Vent pipe flashing fits over flues or pipes.