Thank you for your advise and help so far.
And to continue:
Using Certainteed Landmark Shingles and following Certainteed SAM (Shingle Applicator’s Manual).
With help from this site and others, I installed new 1/2" radiant barrier OSB, WinterGuard, DiamondDeck, drip edge and W-valley metals.
SAM recommends a 1/2" overhang. My drip edge does not have a ledge for the shingle. Would you recommend 1/2, 3/4 or 1" overhang?
SAM has five-course diagonal method with 6" and 11" and 5 5/8" and 11 1/4". For a DIY, which one is recommended for Landmark Shingles (not Landmark Pro)?
Are there advantages of one over the other? 6" and 11" would be a little easier to measure.
- In open valley, is it better to install bleeders first? If yes, should I use starter shingles as bleeders or regular Landmark shingles? I will dub or nib the shingle at the valley. I want to do it water cannot get under the shingle at the valley.
Thank you very much for your time and help.