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Old 08-17-2017, 06:15 PM
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Walker Walker is offline
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Default Adding ledger to stucco wall

I am planning to extend my patio cover on my house. Part of the extension is going to require installing a ledger board, 2x8, along one wall on the gable end of the house. I can cut the stucco without a big problem.

What I am not exactly sure of is the water proofing afterward. Do I just use a piece of bent flashing? Stuff it under the tar paper? Do I need to cut the stucco bigger than the 2x8 so that the flashing can have a downward angle to it? Is there anyway to fit in water proof membrane? What about the ends of the flashing, and the end of the 2x8, how does that get sealed up?


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Old 08-24-2017, 08:32 AM
Slagmakr Slagmakr is offline
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Default not a direct answer, but....

I don't have a specific answer for you but I suggest looking at the online archives of Journal of Light Construction (jliconline.com) and Fine Homebuilding. I'd wager this topic has been addressed in one or both places at least once in past 25 yrs.
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Old 08-25-2017, 08:58 AM
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I have never worked with stucco, so I checked my textbooks from my construction management courses in college. They show tons of detail about how to put the mesh and beads on and apply the stucco. None of them show how to do flashing. I guess people in stucco houses aren't supposed to do additions
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Old 11-18-2017, 09:53 PM
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Just to update this. I spoke with a framer buddy of mine. He said to screw a guide to the wall, then cut the stucco at the bottom where the bottom of the ledger goes. The move the guide and cut the top at a distance above the bottom cut equal to the rafter height plus the sheathing plus the roofing plus a wee bit for the flashing. Then use a putty knife type tool and run it up under the stucco on the upper side to bend/cut any staples. If I run into any nails he indicated that I may have to trim the flashing. Then when installing the flashing use a good quality adhesive caulk and get it up into the groove as I am stuffing the flashing up.
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Old 11-18-2017, 10:04 PM
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Quote:
Originally Posted by Walker View Post
Just to update this. I spoke with a framer buddy of mine. He said to screw a guide to the wall, then cut the stucco at the bottom where the bottom of the ledger goes. The move the guide and cut the top at a distance above the bottom cut equal to the rafter height plus the sheathing plus the roofing plus a wee bit for the flashing. Then use a putty knife type tool and run it up under the stucco on the upper side to bend/cut any staples. If I run into any nails he indicated that I may have to trim the flashing. Then when installing the flashing use a good quality adhesive caulk and get it up into the groove as I am stuffing the flashing up.
That sounds just like I would do it, even though I have a never had a stucco building.
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Old 11-18-2017, 10:56 PM
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In the Arizona desert, if it doesn't move it gets stuccoed.
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Old 11-19-2017, 11:57 AM
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Don't forget the Tyvek house wrap. Water vapor barrier.
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Old 11-19-2017, 02:28 PM
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Tyvek is nice but most here just use 2 layers of building paper. Here's a 400 amp service we just did last week, we cut the stucco with a diamond wheel, replaced the plywood with 5/8" CDX with 2X4 bracing behind it for the equipment mounting. We layered in 2 layers of building paper tucked under the old like shingles. The theory is any moisture getting behind the stucco runs down and out the drain holes in the bottom flashing. We leave the stucco finish to the pros. They'll seal up any holes with whatever caulk they use around penetrations.
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