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I'm planning to replace the current warped ledger board with a new one new using galvanized lag bolts.

  1. How can I protect the exposed black paper and OSB between the two vents?

  2. Is more flashing needed on the bottom of the ledger?

  3. Any other tips?

Ledger board Close up of two vents Very close up of gap between two vents

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1 Answer 1

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Perfect world ... the flashing would be gav metal and create a template (opening) for the vents. Top and side exterior would overlap this flashing top down to DRAIN water (installed as bottom, side, top). I'll mention tar paper here, or peel-n-stick, to underlay and cover any missteps...USE IT.

If...when...you replace the wood, and peel-n-stick the area (bottom up so top overlaps bottom), it will never leak! Your problem is more of a surface issue where the vent is recessed. Fix that and bluff the vent out to make even with the exterior surface, then seal and flash in.

Caulk..and press caulk into any crevises or corners...the outline of the template when finished for a water tight seal.

Don't be scared of the opening, put a hose to it to check for leaks and see where/how you need to repair.

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Thanks For your help –  Shawn H Aug 24 '13 at 22:09

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