Flat Roof Upstand Flashing

Ideally this should be 150mm or a minimum of 75mm again common sense and exposure applies.

Flat roof upstand flashing. Typical methods include banding pitch pockets and cover flashings. The waterproof membrane flashing extends fully below the door frame bottom rail and is sealed to it. Banding is typically used to seal soil vent pipes on single ply roofs such as fdt rhepanol pib and involves wrapping an unreinforced membrane around the pipe to a minimum height of 150mm. It is also used on slate and tile roofs where they meet a wall or a porch on conservatory roofs and around bay windows.

A horizontal gap of minimum 10mm is maintained between frame front edge and drainage channel. With this collar a tight and homogeneous flashing against the roofing membrane can be achieved far quicker than with manual flashing. 1 5 mm available in any. The requirement for flat roof upstands is set out in the british standard.

Bs 6229 2003 flat roofs with continuously supported coverings code of practice and bs 8217 2005 reinforced bitumen membranes for roofing code of practice both state that if unwanted water ingress into the building is to be avoided all weatherproofing upstands occurring around the roof area. 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. This type of flashing can be used on the front and backs of chimneys abutting brickwork on flat roofs or where a roof meets the brickwork of a house or outbuilding. How to terminate epdm membrane at an upstand wall end using quickseam formflash tape application.

Completely pre assembled at the factory full size adhesive bond of the flashing collar on the upstand material thickness of the sealing layer. An approved sealant is then applied to the top of the membrane upstand before it is tied off with a jubilee clip. Lead flashing maximum length. The waterproof membrane extends 150mm height in the door reveal and roof abutment wall adjacent.

The design of drainage falls should ensure that the continuity of the waterproof covering is maintained for a vertical height of 150mm above the finished roof level at all abutments door openings and parapets. Which would include abutments rooflights.