How to cut metal roofing to fit valleys.
Metal roofing valley detail.
With a clean valley you can lay down some peel and stick roofing membrane.
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.
Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage.
Fold the top over the roof ridge and cut the bottom along the drip edge metal.
Valleys are a very important part of a well designed roofing system.
Metal roofing specifications cad pdf drawings testing bim.
Valley detail one piece vented ridge detail.
When installing metal valley flashing there are a few things to keep in mind from cutting metal roofing to sealing the flashing.
After the self adhering underlayment is installed across the valley a pre bent metal valley lining is installed.
Also for exposed fastener panels wall panels tiles soffit fascia copping.
For longer slopes and lower roof pitches contact fabral for other suitable profiles.
Fabricated with hems but can also be fabricated without them in which case they could still be used for metal roofing or any other type of roofing.
Eave detail w gutter 2.
Eave detail w gutter 1.
Details roofing siding exterior trim wrb flashing.
Metal valley trim also known as metal valley flashing is beneficial because it drains water away from the structure of your metal building which helps prevent moisture damage.
First clean the debris out of the valley including sawdust nails and whatever else is in there.
Roof pitch the metal roofing panels shown in this manual require a min imum slope of 2 สบ per foot to ensure proper drainage.
These items can be fabricated in many different profiles.
An open valley relies on metal flashing for protection.
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.
This valley flashing material can be manufactured from any metal that will resist the effects of weather acid rain and other contaminants.
Adds detail and helps to direct water.
Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage.
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.
That flashing is left exposed so the roof has visible lines of metal running down the valley.
Galvanized steel aluminum and copper can all be used.
