Open Metal Valley Roofing

Can t afford standing seam metal though so it will be mid grade architectural asphalt shingles installed with meticulous detail.

Open metal valley roofing.

Take care not to place any fasteners in the exposed center area of the metal flashing. This metal lining can be made of any type of metal that is resistant to the effects of weather acid rain or other contaminants. Metal valley does not extend more than 8 outward from the valley whereas shingles can go as far out as you want them to. Nrca lile recommends that roof valley flashing metal for open roof valleys should be 26 gauge 0 45mm galvanized steel or equivalent noncorrosive nonstaining metal.

The metal is usually pre painted to best complement the shingles color blend. I want my roof to be as leak proof and long lasting as possible. 26 gauge galvanized steel w valley flashing. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck.

Lile points out that valleys lined with roll roofing are not as durable. Roof is 5 12 slope with a couple of valleys. First clean the debris out of the valley including sawdust nails and whatever else is in there. Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic clip the top corner of shingles along valleys to keep water flow toward center of valley.

I m sure they are there for a good reason. Also apply cement to attach the top layer shingles to each other see steps 5 and 6 in open metal valley above. Open valley when compared to a closed valley and open valley adds an additional layer of lining. In a closed valley shingles wrap from one side of the valley to another.

Roofing shingles are installed then cut and sealed where they overlap the metal channel. I m in a mixed humid climate zone 4a. With a clean valley you can lay down some peel and stick roofing membrane. Cut corners and apply cement dub cut the top layer shingles see step 4 in open metal valley above.

After the underlayment is placed a pre bent metal valley lining is installed. Fold the top over the roof ridge and cut the bottom along the drip edge metal. W valley flashing protects the critical area of your w valley flashing protects the critical area of your roof where two slopes come together to form a. Apply two beads of roofing cement to attach the top layer shingles to the bottom layer shingles.