To understand what makes a valley either closed or open it is important to understand how a valley is constructed.
Roof valley gutter construction details.
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.
There are two common methods for completing the flashing of a valley in a shingle roof system.
Valley gutters detailing around the intersection of a valley gutter and a fascia board can be a little tricky.
Table 11 gives the minimum recommended valley widths for different roof pitches and plan areas.
Soakers and step flashings step and cover flashings and secret gutters 30 cover flashings 31 apron flashings 32 chimney flashings 33 pitched valleys 34 ridges and hips 35 mitred hip and valley soakers 36 parapet and tapered gutters 36 drips and rolls for gutters 37 chute outlets for gutters 37 pipe outlets for gutters 38 roll and drip joints 39.
Part 3 of the four part guide to roof construction covers pitched roof detail.
Purpose made valley trough tiles should be supported by gutter boards where the roof uses single lap interlocking tiles.
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To get the most out of it is helpful to also read parts 1 and 2.
Valleys shall have suitable weathering details including flashings to resist the passage of moisture to the inside of the building.
In this video we ll flash the valley.
Here are a few pointers.
Roof problems valley gutters.
Cut adjacent tiles and tile and a half tiles so that valley tiles course in and fit neatly.
One of the details that varies between homes is the method of flashing the valley areas of the roof.
First clean the debris out of the valley including sawdust nails and whatever else is in there.
Closed valleys or open valleys.
The width of the open valley is dependent upon the roof pitch and the volume of water expected to drain into the gutter.
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.
Part 1 a guide to roof construction covers an overview of flat and pitched roofs.
Roof ridges and ridge tiles roof hips and hip tiles roof valleys roof verges and lead flashings.
We use lots of sketches and photos in our building surveys.
Note that it is not.
Valley with valley tiles ensure that continuous support is provided for ends of tiling battens on each side of valley.
Proprietary gutter or valley systems.
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.
