Valley On Metal Roof

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

Valley on metal roof.

Why is a metal valley important. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off. Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps. With a clean valley you can lay down some peel and stick roofing membrane.

The metal is usually pre painted to best complement the shingles color blend. Masterrib is a 36 wide 5 r. Be sure to check local building codes to ensure you have the proper width for your application. 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.

A metal valley is a pre bent roofing material designed to protect these vulnerable areas on your roof. The metal valley is installed on top of the ice and water shield and creates a highly effective barrier and passageway to keep your roof dry and protected. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Install an underlayment centered in the roof valley.

Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet. When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter. Roofing shingles are installed then cut and sealed where they overlap the metal channel. Valley flashings are custom fabricated to any measurements and angles and usually measure 10 in length but can also be we can also match any profile.

How to cut metal roofing to fit valleys. Special pricing available for large quantities. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck. Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic.

When installing metal valley flashing there are a few things to keep in mind from cutting metal roofing to sealing the flashing. Product overview w valley flashing protects the critical area of your roof where two slopes come together to form a valley.