Stepped Flashing Detail At Roof

Sp 31 usp sp parapet wall with usp sp clad metal flashing detail.

Stepped flashing detail at roof.

Counter flashing is the final layer of a three part waterproof barrier installed between a roof and a vertical wall or chimney. Sp 35 usp sp vent stack flashing detail. Even if one piece of step flashing fails the flashing and shingle below it start the. The term reglet flashing refers to an installation method for counter flashing not a separate layer.

Roof flashing large roof penetration 8 small roof penetration 8 change of pitch 8 mansard 9 expansion joint 10 ridge capping 10 raked roof 11 box gutter 11 barge gutter 12 barge capping 12 curved barge 12 parapet top 13 parapet to sheet connection 13 wall flashing mid wall connections 14 internal corner trim 15 internal corner. Where a pitched roof abuts the wall at an angle a stepped cavity tray linked to a stepped flashing should be used. 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 edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.

Sp 32 usp sp standard roof drain flashing detail. Flashing against a vertical sidewall shall be by the step flashing method. The standing seams are laid flat 8 from the vertical wall folded 3 4 and secured with copper cleats spaced 12 o c. 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.

Stepped flashings should be cut from a strip at least 150mm wide. Sp 30 usp sp alternate high wall flashing detail. Sp 34 usp sp scupper flashing detail. 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.

While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. Cover flashings alone can only be used where they. 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. Open valleys have metal flashing to protect this critical area of the roof.

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. Sp 33 usp sp standard roof drain flashing detail for fastened systems. Soakers or a secret gutter should be installed at abutments where plain or flat interlocking tiles are used. The flashing shall be a minimum of 4 inches 102 mm high and 4 inches 102 mm wide.

The detail shows the method of flashing the head of a standing seam shed roof. 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.