Cut tile and a half tiles neatly and fix to form a gap minimum 125mm wide centred on valley.
Pitched roof valley gutter detail.
Cut underlay to rake and dress over tilting fillets to lap onto metal valley.
A common misconception is that the mortar bedding is there to prevent water access.
Roof ridges and ridge tiles roof hips and hip tiles roof valleys roof verges and lead flashings.
Our basic fitting guides are designed to assist installing rolled lead sheet in a range of roofing applications including flashings valleys gutters and flat roofing.
Ensure that valley boards plywood sheathing and tilting fillets provide full support for metal valley.
It is an area where water is directed towards rather than away from therefore correct detailing and construction is essential.
We use lots of sketches and photos in our building surveys.
Maximum catchment areas for valley gutters are given in table 8 of e2 as1 for minimum roof pitch and gutter widths.
Roof problems valley gutters.
One of the areas of a pitched roof most prone to leakage if not constructed properly is the valley.
Part 1 a guide to roof construction covers an overview of flat and pitched roofs.
Purpose made valley trough tiles should be supported by gutter boards where the roof uses single lap interlocking tiles they should be mechanically cut to the correct rake adjacent coverings should be neatly cut to form a smooth junction and preferably be cut from tile and a half tiles.
1stassociated co uk surveyors can provide help and advice with regard to property reports building surveys structural surveys independent valuations structural reports engineers reports specific defects report home buyers reports or any other property matters.
Where the roof pitch is between 8 12 5 the.
To get the most out of it is helpful to also read parts 1 and 2.
Ensure that underlay is not laid under metal.
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.