Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage.
Metal roofing valley detail.
Some homeowners do not like the look of open valleys while others feel the metal accentuates the roof s shape particularly if copper or painted flashing is used.
Pipe penetration w iso details.
Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant.
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.
Always be aware of your position on the roof relative to any roof openings roof edges co workers and penetrations.
How to seal metal roof valley.
To understand what makes a valley either closed or open it is important to understand how a valley is constructed.
Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel.
Roof pitch the metal roofing panels shown in this manual require a min imum slope of 2 สบ per foot to ensure proper drainage.
Best practices for sealing the metal roof valley vary based on the slope of the roof.
There are two common methods for completing the flashing of a valley in a shingle roof system.
Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies.
That flashing is left exposed so the roof has visible lines of metal running down the valley.
Valley detail one piece vented ridge detail.
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Details roofing siding exterior trim wrb flashing.
One of the details that varies between homes is the method of flashing the valley areas of the roof.
For longer slopes and lower roof pitches contact fabral for other suitable profiles.
Eave detail w gutter 1.
Closed valleys or open valleys.
Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.
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Metal roofing panels are slippery when wet dusty frosty or oily do not attempt to walk on a metal roof under these conditions.
With a clean valley you can lay down some peel and stick roofing membrane.
