Flat Roof Valley Gutter Detail

Alwitra flat roof details.

Flat roof valley gutter detail.

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. Water like to follow the valley to the edge and flow back under the valley. Valley areas are prone to leak due to the lack of using proper materials. Most roofers that do shingles will use a heavy base paper instead of a rubber membrane.

Valleys with central upstands are beneficial where two roof slopes of unequal pitches meet at a valley. Gutters can also be installed to work in tandem with a scupper system. Details and technical drawings of the flat roof drainage as downloads in the practical pdf dxf and dwg formats. In reality a flat roof isn t fully level and flat roofs built for gutters should direct water to one or more sides where the gutters are installed.

Roof valleys are like gutters with a steep pitch but the stakes are higher for valleys than they are for gutters in a previous video we covered how to flash roof edges before shingling. Cost alternative to the restructuring of existing gutter detail. When a valley is flat like this one in the image it is more problematic. Catchment area must be no more than 25 m gutter must be at least 250 mm wide.

A lock hem drip edge on a sheet metal brake ben bogie walks us through the process of bending a really short piece of roof flashing which he will use on. Pitched roof intersection with valley 44 vertical cladding joints and fixings 45 vertical cladding head finishes 46 dormer windows jambs and s ill 46. Roll detail at drips and abutments 41 flat roof roll and drip intersections 42. Gutters are often a viable option for flat roofs directing water on the outside of the structure to downspouts.