View source for TS Details:E4.7.8 (Slate - Valleys)

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<big><big>Division D - Construction Details</big></big>
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<big><big><big><big><big>TS Details:E4.7.8 (Slate - Valleys)</big></big></big></big></big>
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| colspan="2"  | <big>'''''Notice to Reader'''''</big>
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| style="color: black; background-color: #ffffcc; width: 100%;text-align:center" | Images used in a Construction Detail are representative and not prescriptive.  Nor are they necessarily drawn to scale. Rather, they are provided to visually convey the requirements of the Standard they represent. Unless otherwise required by the Standard, dimensions, the selection of materials and their application remains the responsibility of the ''Design Authority''.<br><br>The full text of the referenced requirements in the [[Slate Systems Standard | '''Standard''']] may be read by using the <span style="color:#6495ed">'''blue hyperlinks'''</span>
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<div class="panel-heading"><big>'''Slate Roofing Details'''</big></div>
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Valleys on a slate roof can be done in several ways including swept, laced, mitred and open. The recommended style for B.C. is open valleys, due to ease of installation and better drainage of debris. It is recommended that copper, lead or stainless steel be used to match the longevity of slate.

Valley metal should be a minimum of 600 mm (24") wide and be centre crimped. Successive pieces should lap a minimum 150 mm (6"). Valley metal sections should be drag load fastened and sealed between laps with a compatible caulking. Slates should extend a minimum of 150 mm (6") into the valley with the cut line being tapered 1% from bottom to top.
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'''NOTE''': See the [[Slate Systems Standard | '''Standard''']] for additional requirements.

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