Flashing for Siding to Stone Veneer Transition
For context my house was built in 1966 in MA. I’m going to add stone veneer over my poured foundation up to where it meets the siding. I’ve been researching what I’ll need to protect against water infiltration. From what I’ve read I’ll need to flash behind the housewrap to allow the water to drip down the stone veneer. I’ve attached a photo of a common way to do this. The only issue is my house siding is vinyl that was installed over cedar shingles with a 1/2″ layer of foam between the two. When I install my metal z flashing should I try to go behind everything between the OSB and cedar shingles since my house was built pre wrap? Is there anything else I should be cognizant of?
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"When I install my metal z flashing should I try to go behind everything between the OSB and cedar shingles"
Yes. There's likely a layer of asphalt felt over the existing sheathing. The new flashing should be tucked behind that. And don't be tempted to seal the gap under the vinyl and cedar siding; it all needs to drain. Same goes for the new stone--drainage layer behind and flash/kickout at the base.