Roofing Aluminum Valleys

Lap successive sheets of metal flashing a minimum of 12 inches and seal laps.

Roofing aluminum valleys.

Preformed valley flashing is used to channel water down the roof into the gutters in the roof valley area. How to seal metal roof valley. How do valley metal flashings join at top of valley. Valleys are a very important part of a well designed roofing system.

Avoid using anything that will melt the galvalume coating such as a chop saw torch or abrasive blade. That flashing is left exposed so the roof has visible lines of metal running down the valley. An open metal lined valley has a cleaner and more appealing look. An open metal lined valley properly installed is functionally better long term.

On top of that our pre formed metal product provides significant savings in installation time. Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris. Quality edge valleys effectively channel the rainwater to run off easily and add strength where it s needed most in the center area of the flashing to provide long term peace of mind. Quality edge metal valley better roof faster install.

As the asphalt shingles are installed over the roof deck the shingles are extended into the valley. Galvanized steel aluminum and copper can all be used. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. To read pdf files you need the adobe acrobat reader 6 0 or higher.

It s bendable for various pitches. Whether for slate shingle or metal roofing valley flashing adds detail and helps to direct water. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed. From a more opinionated viewpoint.

Install an underlayment centered in the roof valley. Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. 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. 18 w x 10 white l valley flashing.

With a clean valley you can lay down some peel and stick roofing membrane. If you re referring to a dormer roof where two valleys meet from either side then you extend each to about a foot above the dormer peak meets the existing roof. Then install a non corrosive metal valley flashing of 24 minimum width. An open valley relies on metal flashing for protection.

For example in metal roofing systems valleys are commonly 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. When cutting your metal roofing to fit valleys it s important to use the proper tools. These items can be fabricated in many different profiles.