Roofing Aluminum Valleys

These items can be fabricated in many different profiles.

Roofing aluminum valleys.

18 w x 10 white l valley flashing. An open metal lined valley properly installed is functionally better long term. With a clean valley you can lay down some peel and stick roofing membrane. Then install a non corrosive metal valley flashing of 24 minimum width.

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. Preformed valley flashing is used to channel water down the roof into the gutters in the roof valley area. However you need to cut down the middle of the valley so that one side lies against the main roof and the other.

Install an underlayment centered in the roof valley. From a more opinionated viewpoint. How do valley metal flashings join at top of valley. That flashing is left exposed so the roof has visible lines of metal running down the valley.

A closed valley may be just fine given the budget and type of roof. 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. Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Whether for slate shingle or metal roofing valley flashing adds detail and helps to direct water.

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. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley. On top of that our pre formed metal product provides significant savings in installation time. Quality edge metal valley better roof faster install.

How to seal metal roof valley. An open valley relies on metal flashing for protection. Valleys are a very important part of a well designed roofing system. An open metal lined valley has a cleaner and more appealing look.

Avoid using anything that will melt the galvalume coating such as a chop saw torch or abrasive blade. It s bendable for various pitches. Galvanized steel aluminum and copper can all be used. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.

When cutting your metal roofing to fit valleys it s important to use the proper tools. Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. Fold the top over the roof ridge and cut the bottom along the drip edge metal.