Flat Roof Flashing Height

Which would include abutments rooflights and service vents etc must have a minimum height of 150mm.

Flat roof flashing height.

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. For example 3 tab shingles usually have a 5 5 8 inch 143 mm exposure. Provide venting to each wall cavity. The 8 inch height prevents water from pouring over the top of the flashings into the building or system.

Vertical flashings must be a minimum of 8 inches above the completed roof surface. This dimension should be measured from the finished surface of the roof which would. Height of roofing at wall. Do not lap tpo over top of parapet unless required by unique construction conditions.

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. The gibraltar building products l flashing protects your home the gibraltar building products l flashing protects your home from moisture infiltration where your wall meets your roof. Minimum of 12 to top of parapet. This height has become the industry standard and is recognized by most membrane manufacturers.

Typical methods include banding pitch pockets and cover flashings. An approved sealant is then applied to the top of the membrane upstand before it is tied off with a jubilee clip. L shaped flashing is a versatile general use flashing used where a uniform or strengthened finish is needed on a 90 surface. Typically 10 by 8 inch 253 mm x 203 mm flashing is chosen.

Top of parapet below cap to be sealed with fluid applied flashing.