How to Flash your Decks properly! 

For someone doing a deck only that’s some solid ass work, from the roofing and siding guy. Only one small improvement I would make but you’d have to be installing the tyvek and the deck in conjunction. Install a piece of tyvek from below that goes above the flashing, but cuts off. Then install the flashing, both layers. Then run your next piece of tyvek overlapping the flashing and continuing up the wall. This way it’s tyvek to metal to tyvek without tape directing the water. Still tape the bottom of the upper tyvek to the flashing more just for air sealing the wall. Just avoids having to rely on the tape, or having to cut into the tyvek at the end as you showed. Something I do with all my flashings. I cut a few rolls to have 3/4/5/6/7 and 10 ft rolls. That way you’re not fully covering a window let’s say, and then cutting and taping drip caps. I run my tyvek across the bottom and up the sides in one piece and extend it above the window a bit. Then drip cap drains over the sides, and then start another piece of tyvek above the drip cap. Just make sure lower tyvek goes a few solid inches above the drip caps backing. Your way here definitely will work, and importantly in the worst case eventual situation if both tape strips fail your only going to affect the back of the deck ledger and not the rim joist as the tyvek is continuous. But if you are ever in this situation again my way will make it last forever. It will Only fail if the tyvek fails, and then the whole home needs re-siding.

“Long after you’re gone” is the correct term But big ups on that flash job, good shit…just had to redo my moms deck that contractor shit hacked the ledger directly through the siding with zero flashing 🤦🏻‍♂️

THanks! went from flashing my neighbors wife to flashing my decks properly!

“Shit hacking” LMAO

The useless second flashing looks like pure dog 💩… look even worse in a few years once it’s all bent and dinged up.