Types of Deck Flashing
The IRC code requires that you install approved corrosion-resistant flashing in a shingle fashion to prevent water going into the wall cavity. The flashing shall extend to the surface of the exterior wall finish.
Corrosion resistance is defined as the ability of a material to withstand deteriorization of its surface or properties when exposed to its environment.
Deck flashing creates a barrier to prevent moisture from entering the house in the openings you create when attaching your ledger board connection.
You can buy flashing either in roll form or in rigid Z- or L-shaped 10' sheets made of stainless steel, copper or vinyl material. Never use galvanized steel or aluminum flashing in contact with an ACQ pressure-treated wood ledger board because it will corrode. Vinyl flashing is the least expensive option, but it may not work as well in areas with extreme temperature fluctuations. If you are installing copper flashing from a roll, make sure you use copper nails to secure it into place to prevent corrosion. Copper works well because it is compatible with the chemicals used in commonly sold ACQ-treated lumber and is easy to bend. Because flashing comes in different widths, make sure your flashing will be the right size to tuck up behind the house siding at least a couple of inches. We recommend that you install a bead of silicone caulk to fill any openings.
SaveOur White Vinyl Roll Flashing is made of exterior-grade polyvinyl chloride for use with all pressure-treated lumber.
SaveZ Flashing tucks under the siding and wraps over the top of the ledger board.
Attaching the Ledger Board to the House Rim
Learn how to properly install a waterproof ledger board using flashing and fasteners. Check out our step-by-step video and detail drawings.
Framing Around a House Cantilever
Learn a technique for framing around a cantilevered house bay to properly support your deck.
Layout Of The Ledger
Learn how to plan ahead to avoid problems when installing your deck ledger board to the house wall.
Pressure Washer Buying Guide
When it comes to cleaning your deck, it's important to choose the right pressure washer. Use this pressure washer buying guide from Decks.com to help with your decision!
Deck Post Repair: How to Fill Cracks in Deck Posts
The right kind of wood can resist rot, mold, and insects, but they can still split or crack. You can repair the posts before the problem causes structural issues. Read our guide on deck post repair to help your outdoor space last as long as it possibly can.
Deck Inspection: Checklist for Framing, Footings and More
Concerned that your deck no longer meets safety regulations? Want to know how to spot signs of trouble for your deck? Review our checklist for inspecting your deck at Decks.com.
More Helpful Resources
Explore Articles by Topic
Footings
Information related to installing frost footings for decks
Framing
Learn structural framing methods
Decking
Learn about wood and composite decking materials
Stairs
An in-depth look at the complex issue of how to build stairs
Railings
How to install guardrails and handrails to meet IRC code
Features
An overview on water drainage, benches, planters and lights
Design
The basics of deck design
Planning
Learn about permits and working with contractors
Porches & Patios
Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
Care
Maintain your deck to maintain your investment
Materials
An overview on water drainage, benches, planters and lights
what if my deck has no flashing
Our inspector discusses what you should do if you deck ledger board isn't properly flashed.
Vents, Pipes and Spigots
How do you install a deck ledger board around vents, pipes and spigots? We offer two solutions that can solve your problem.
Removing Stucco Siding
Learn how to cut through stucco siding to prepare a house wall to install a deck ledger board.
How to Remove Scuffs and Scratches from Composite Decking
Removing scuffs and scratches can help make your composite deck look like new. Learn how to fix and prevent your composite deck from future scratches.
How to Restore & Refinish a Deck
Decks need maintenance. A twice-yearly cleaning is needed at a minimum. But wood decks—even with good upkeep—can still warp, rot, or get termites. Plus, no stain or paint job lasts forever. Fortunately, you can reset the clock by restoring your deck and refinishing it.
How to Ink Stamps from Pressure Treated Lumber
Ink stamps seen on pressure treated wood represents where the lumber came from and its grade. Learn a few tricks to remove this ink from your wood at Decks.com.
Explore Articles by Topic
Footings
Information related to installing frost footings for decks
Framing
Learn structural framing methods
Decking
Learn about wood and composite decking materials
Stairs
An in-depth look at the complex issue of how to build stairs
Railings
How to install guardrails and handrails to meet IRC code
Features
An overview on water drainage, benches, planters and lights
Design
The basics of deck design
Planning
Learn about permits and working with contractors
Porches & Patios
Build a covered deck to enjoy all seasons
Ledger
Proper attachment techniques
Care
Maintain your deck to maintain your investment
Materials
An overview on water drainage, benches, planters and lights