Metal Roof Valley Flashing Detail

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.

Metal roof valley flashing 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. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. That flashing is left exposed so the roof has visible lines of metal running down the valley. More product details close.

This drip edge flashing provides protection from water damage along the eaves and rake of a roof. Punctures in the center of the valley. The installer fabricates simple clips or valley flashing cleats whose bent edge interlocks with the folded over or hemmed edges of the metal roof valley flashing to secure the valley to the roof deck. Roof mastic applied along sides of valley flashing.

Closed cut valley fully replaced with new metal valley flashing. The top joinery of both valleys when they meet on the same plane of roof is shown here. The extra kick at the bottom of the face directs run off away from the structure. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak.

How to secure metal roof valley by clips cleats or edge trapping roofing nails. Fasteners placed in the exposed center area. Gibraltar drip edge flashing can be used with asphalt shingles or metal roofing panels. Failure to extend the entire width of the metal valley flashing beyond the eave of the roof.

W type valley flashing is more rigid for handling so it stays straight and it stops waler rushing down one side of a roof from rushing back up the other side. These items can be fabricated in many different profiles. Open valleys have metal flashing to protect this critical area of the roof. Valleys are a very important part of a well designed roofing system.

Whether for slate shingle or metal roofing valley flashing adds detail and helps to direct water. Drip edge metal valley flashing dormer chimney and kick out flashing shed water away from the connections between roofs walls chimneys and other building assemblies this collection of 18 articles animations and videos identifies the critical roof flashing areas illustrates durable roof flashing details and shows how to flash roofs. Use roof valley cleats at intervals of 24 o c.