Flashing In Sloped Roof Construction

The international code council icc is a non profit organization dedicated to developing model codes and standards used in the design build and compliance process.

Flashing in sloped roof construction.

Where flashing is of metal the metal shall be corrosion resistant with a thickness of not less than 0 019 inch 0 5 mm no. This flashing provides protection for pipes cables conduits and wires. Open valleys have metal flashing to protect this critical area of the roof. Up to 5 3 4 in.

In either case find a professional roofing contractor experienced with low slope roofs and these specific products. 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. A flashing shall be installed to divert the water away from where the eave of a sloped roof intersects a vertical sidewall. The soft aluminum base conforms to most metal roof panels.

610 mm inside the exterior wall line of the building. And in our experience when a single piece of flashing extends only a few inches under the shingles especially on a long roof slope and worse on a roof that happens to slope slightly towards rather than away from the abutting vertical building wall the accumulated roof drainage water near the bottom end of the roof wall intersection will. 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. Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs.

Roof sheathing is attached to the roof framing trusses or rafters and provides the nail base for the other components of the roof system. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. Stepped flashing is used where a sloped shingled roof intersects a vertical wall.

As in all construction work paying attention to the little details can make all the difference between a long lasting trouble free project and one that results in callbacks and early failure never a good option with a new england roof. The international codes i codes are the widely accepted comprehensive set of model codes used in the us and abroad to help ensure the engineering of safe sustainable affordable and resilient structures.