Deck flashing

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1

Originally Posted By: Heath Brier Johns
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What is the requirement for deck flashing? I found water damage in the basement directly below this deck. Was it due to missing flashing?


[ Image: http://www.nachi.org/bbsystem/usrimages/E/Emanuel_photos_012.jpg ]


[ Image: http://www.nachi.org/bbsystem/usrimages/E/Emanuel_photos_009.jpg ]


The second photo is an infrared picture showing the water above the sliding door.

2

Originally Posted By: ddivito
This post was automatically imported from our archived forum.


Z-flashing should be installed on top of the header. It goes under the siding and over the top of the header.

3

Originally Posted By: eschwartz
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Heath,


Pretty much what ddivito says. Let me confuse things.


Here in the wet NW we call the joist that is bolted to the house a ledger. Typically the ledger is bolted to the rim-joist of the house and the only thing between the ledger and the rim-joist is sheathing and air-barrier (tyvec or tar-paper). Flashing must be put on top of the ledger but behind the siding that is above the ledger. With this done, the ledger acts like another course of siding.....it sheds water.

No flashing = problem.

Ed

4

Originally Posted By: dvalley
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header???

–
David Valley


MAB Member


Massachusetts Certified Home Inspections
http://www.masscertified.com

"Some cause happiness wherever they go; others, whenever they go."
5

Originally Posted By: lkage
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eschwartz wrote:
Here in the wet NW we call the joist that is bolted to the house a ledger. Typically the ledger is bolted to the rim-joist of the house and the only thing between the ledger and the rim-joist is sheathing and air-barrier (tyvec or tar-paper). Flashing must be put on top of the ledger but behind the siding that is above the ledger. With this done, the ledger acts like another course of siding.....it sheds water.

No flashing = problem.

Ed



Good explanation Ed.

--
"I have never met a man so ignorant that I couldn't learn something from him."
Galileo Galilei