Flat Roof To Wall Flashing Detail

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 right in the real world.

Flat roof to wall flashing detail. The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas. Here is an attempt though maybe not a very good one to make the roof flashing serve also as a through the wall flashing with a tile roof. Tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape. Size up the job.

Flashing is installed to surround roof features such as vents chimneys and skylights. Roof wall flashing architectural detailing this design guide has been prepared to assist architects and architectural draftspersons with the design and installation intricacies of detailing roof and wall flashing for metal cladding. N use flashing cement at joints to help secure flashing. Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer.

Flat roof flashing this could virtually be any type of flat roof the upstand of the flat roof covering is overlapped by the drop of the flashing. Same type of metal as the flashing material. The flashing extends up the wall at least 4. Flashing joints are lapped 6 in the direction of water flow.

Lead flashing maximum length. Do not seal housewrap or building paper to step flashing. N use step flashing that has a 2 to 4 inch lon ger vertical leg than normal. Use step flashing that has a 2 to 4 inch longer vertical leg than normal.

Quality of a finished installation is dependent on good detailing. The metal flashing is formed with a hook edge and cleated on 12 centers. N tape the top of step flashing with 4 inch wide minimum self adhering modified bitumen roof tape. N at roof to wall intersections see figure 1.

The flat roofing material must go up the wall a minimum of 12 or up the wall and over the top of the wall if the wall is less than 12 high. Ideally this should be 150mm or a minimum of 75mm again common sense and exposure applies.