I'm in the contracting phase of a roof strip and replacement job for my
split-level house. The shingles will be the architectural type, either
by GAF or Certainteed.
My leading proposal has specified shingle valleys. Aluminum flashing is
also available. Are shingle valleys as watertight and long lasting as
The roof currently is ventilated by gable vents and there is no ridge
vent. I have specified that a ridge vent be installed. The existing
soffit vents are circles only about 3" diameter spaced every four feet.
I think we need better soffit venting.
The contract has an option for air vent ventilated dripedges. Is this
worthwhile, or would merely cutting in more (larger) vents work just as
Any advice for roofing work would be much appreciated! Thanks.