# Which deck ledger flashing details actually survive two decades—membranes, metals, and shingle integration? **URL:** \ **Category:** Trade Talk\ **Created:** [August 4, 2025, 3:19pm UTC](https://home.renovation.reviews/t/which-deck-ledger-flashing-details-actually-survive-two-decades-membranes-metals-and-shingle-integration/19986 "2025-08-04T15:19:00Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![reno\_questions](https://home.renovation.reviews/user_avatar/home.renovation.reviews/reno_questions/32/2758_2.png) [@reno\_questions](https://home.renovation.reviews/u/reno_questions)\ **Post date:** [August 4, 2025, 3:19pm UTC](https://home.renovation.reviews/t/which-deck-ledger-flashing-details-actually-survive-two-decades-membranes-metals-and-shingle-integration/19986/1 "2025-08-04T15:19:00Z")
Which deck ledger flashing details actually survive two decades—membranes, metals, and shingle integration? ---
**Author:** ![Tim\_Michael1](https://home.renovation.reviews/user_avatar/home.renovation.reviews/tim_michael1/32/6294_2.png) [@Tim\_Michael1](https://home.renovation.reviews/u/Tim_Michael1)\ **Post date:** [August 13, 2025, 7:54pm UTC](https://home.renovation.reviews/t/which-deck-ledger-flashing-details-actually-survive-two-decades-membranes-metals-and-shingle-integration/19986/2 "2025-08-13T19:54:15Z")
Good copper or quality aluminum flashings put under shingles or siding with a good slope can last for years. Peel-and-stick stuff works well if it’s out of the sun. Keep things clean and check the sealant to make them last even longer. ---
**Author:** ![Joyboy03j](https://home.renovation.reviews/user_avatar/home.renovation.reviews/joyboy03j/32/2900_2.png) [@Joyboy03j](https://home.renovation.reviews/u/Joyboy03j)\ **Post date:** [August 13, 2025, 8:00pm UTC](https://home.renovation.reviews/t/which-deck-ledger-flashing-details-actually-survive-two-decades-membranes-metals-and-shingle-integration/19986/3 "2025-08-13T20:00:21Z")
Metal flashing with proper shingle overlap lasts longest; membranes fail faster unless fully protected and well-integrated. ---
**Author:** ![Theodore\_3456](https://home.renovation.reviews/user_avatar/home.renovation.reviews/theodore_3456/32/2821_2.png) [@Theodore\_3456](https://home.renovation.reviews/u/Theodore_3456)\ **Post date:** [August 14, 2025, 4:27am UTC](https://home.renovation.reviews/t/which-deck-ledger-flashing-details-actually-survive-two-decades-membranes-metals-and-shingle-integration/19986/4 "2025-08-14T04:27:34Z")
For 20+ year ledger life: metal flashing and self-adhered membrane and proper shingle/siding overlap, with slope and sealed fasteners. ---
**Author:** ![Tim\_curtis](https://home.renovation.reviews/user_avatar/home.renovation.reviews/tim_curtis/32/2766_2.png) [@Tim\_curtis](https://home.renovation.reviews/u/Tim_curtis)\ **Post date:** [August 14, 2025, 10:30am UTC](https://home.renovation.reviews/t/which-deck-ledger-flashing-details-actually-survive-two-decades-membranes-metals-and-shingle-integration/19986/5 "2025-08-14T10:30:12Z")
The longest lasting ledger flashing setups pair a corrosion resistant metal like stainless steel or heavy gauge aluminum with proper shingle style integration behind the siding and over the ledger plus a self sealing membrane over framing before metal install. Key to two decade survival is leaving a drainage gap between ledger and house wall, using kickout ends to shed water, and avoiding direct contact between treated lumber and metal without a barrier ---
**Author:** ![kent\_0902](https://home.renovation.reviews/user_avatar/home.renovation.reviews/kent_0902/32/2825_2.png) [@kent\_0902](https://home.renovation.reviews/u/kent_0902)\ **Post date:** [August 14, 2025, 10:42am UTC](https://home.renovation.reviews/t/which-deck-ledger-flashing-details-actually-survive-two-decades-membranes-metals-and-shingle-integration/19986/6 "2025-08-14T10:42:09Z")
For longer survival: Best: Self-adhered membranes (like Trex Seal), copper, stainless steel. Shingle integration: Use drip cap/Z-flashing above ledger; seal fasteners behind. Avoid: Aluminum or galvanized on pressure-treated wood. ---
**Author:** ![Lexi\_Carter1](https://home.renovation.reviews/user_avatar/home.renovation.reviews/lexi_carter1/32/2767_2.png) [@Lexi\_Carter1](https://home.renovation.reviews/u/Lexi_Carter1)\ **Post date:** [August 14, 2025, 12:00pm UTC](https://home.renovation.reviews/t/which-deck-ledger-flashing-details-actually-survive-two-decades-membranes-metals-and-shingle-integration/19986/7 "2025-08-14T12:00:43Z")
For 20-year performance, use corrosion-resistant metal (stainless or coated aluminum/zinc) over a self-adhered membrane, integrated under shingles and siding with end dams. Metal shields the membrane from UV, and proper layering, slope, and drainage ensure long-term protection.