Roof Valley Gutter Construction Details

Here are a few pointers.

Roof valley gutter construction details.

Cut adjacent tiles and tile and a half tiles so that valley tiles course in and fit neatly. Valley gutters detailing around the intersection of a valley gutter and a fascia board can be a little tricky. This valley has seen its better days but the. We use lots of sketches and photos in our building surveys.

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. First clean the debris out of the valley including sawdust nails and whatever else is in there. The width of the open valley is dependent upon the roof pitch and the volume of water expected to drain into the gutter. To understand what makes a valley either closed or open it is important to understand how a valley is constructed.

Roof valleys are like gutters with a steep pitch but the stakes are higher for valleys than they are for gutters. Part 1 a guide to roof construction covers an overview of flat and pitched roofs. Valleys shall have suitable weathering details including flashings to resist the passage of moisture to the inside of the building. Purpose made valley trough tiles should be supported by gutter boards where the roof uses single lap interlocking tiles.

Roof problems valley gutters. In a previous video we covered how to flash roof edges before shingling. Note that it is not. To get the most out of it is helpful to also read parts 1 and 2.

In this video we ll flash the valley. Flashing a humpy old roof valley requires a little give and take and a backup plan. Part 3 of the four part guide to roof construction covers pitched roof detail. Proprietary gutter or valley systems.

There are two common methods for completing the flashing of a valley in a shingle roof system. Table 11 gives the minimum recommended valley widths for different roof pitches and plan areas. One of the details that varies between homes is the method of flashing the valley areas of the roof. Closed valleys or open valleys.

Design right by alide elkink freelance technical writer wellington cross sectional details for valley gutters are given in both acceptable solution e2 as1 and the nz metal roof and wall cladding code of practice. Valley with valley tiles ensure that continuous support is provided for ends of tiling battens on each side of valley. Cover valley with a strip of underlay not less than 600mm wide underlapping general underlay.