Stepped Flashing Detail At Roof

Sp 30 usp sp alternate high wall flashing detail.

Stepped flashing detail at roof.

The flashing shall be a minimum of 4 inches 102 mm high and 4 inches 102 mm wide. Continuous flashing is sometimes seen where a roof meets a sidewall but in the long run step flashing will do a better job of preventing water leaks. The step referred to is the pattern created in the lead by a series of cuts that allows the lead to penetrate into the courses between the. Stepped flashings should be cut from a strip at least 150mm wide.

At the end of the vertical sidewall the step flashing shall be turned out in a manner that directs water away from the wall and onto the roof and or gutter. The detail shows the method of flashing the head of a standing seam shed roof. Sp 33 usp sp standard roof drain flashing detail for fastened systems. Sp 32 usp sp standard roof drain flashing detail.

A step flashing is a roof flashing that allows a roof to abut brickwork for instance when a lower height roof runs into a wall a roof meets a chimney or a conservatory roof meets the wall of a house. The standing seams are laid flat 8 from the vertical wall folded 3 4 and secured with copper cleats spaced 12 o c. The term reglet flashing refers to an installation method for counter flashing not a separate layer. Even if one piece of step flashing fails the flashing and shingle below it start the.

Sp 31 usp sp parapet wall with usp sp clad metal flashing detail. Where a pitched roof abuts the wall at an angle a stepped cavity tray linked to a stepped flashing should be used. Step flashing redirects the water back onto the shingle. Open valleys have metal flashing to protect this critical area of the roof.

Cover flashings alone can only be used where they. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. Sp 34 usp sp scupper flashing detail. Sp 35 usp sp vent stack flashing detail.

Copper locking strips of the same weight as the flashing are soldered to the pans between seams at least 6 from the wall and engage the base. Soakers or a secret gutter should be installed at abutments where plain or flat interlocking tiles are used. Stepped flashing is used where a sloped shingled roof intersects a vertical wall. 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.

Flashing against a vertical sidewall shall be by the step flashing method. The first two layers are called base flashing and step flashing.