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Will the home siding have to be
removed or can the deck flashing just be slid up behind the siding? I
cannot seem to find a picture anywhere of what deck flashing looks like.
Answer: When installing a
new deck onto your home it is critical to install deck flashing between the home and the deck.
Not installing deck flashing will leave your home
susceptible to water, mold, and insect damage as rain run off will seep
behind the deck ledger board and up against your home.
Deck flashing by itself is inexpensive. Usually it comes in rolls 6-10
inches wide and you should be able to get it at any home improvement store.
There is also a Z-shaped deck flashing type that is sometimes used, but you
really should use the rolled stuff as it is wider and will allow you to
extend it up further behind the siding.
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Pressure
Treated Decks and Installing Deck Flashing
If your deck is constructed
out of pressure treated lumber you should use a copper based deck flashing to
prevent the deck flashing from corroding. Today, pressure treated wood
is impregnated with higher percentages of copper than in the past. Older
types of flashing made from aluminum or galvanized metal will react with
today’s treated lumber and actually corrode over time.
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Installing deck flashing is not that difficult to do, even if the deck is
already built. You will need to remove a deck board, or a section of deck
boards pending if the deck boards run parallel or perpendicular to the
deck ledger board.
Installing Deck Flashing
The deck ledger board is connected to the the
house. The deck joists tie into it and support the decking boards. You will
need to remove some of these decking boards near the house, and slide the
deck
flashing up underneath the first layer of siding that is nearest to the deck
surface. The deck flashing then rolls over the edge of the ledger board, and
the deck boards rest on top of it. This way water that gets behind the deck
boards, nearest the house, does not slide down behind the ledger board, but
instead rolls around the outside edge of the ledger board and drips onto the
ground. Also, make sure nails are not punched through the deck flashing so
that it defeats the purpose of it. Sometimes to achieve this you may need to
put in an additional joist to act as a nailer for the reapplied deck boards.
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For more help on building a Deck, see HomeAdditionPlus.com's
Deck Installation Bid Sheet.
The
Deck Installation Bid Sheet
will teach your how to hire the right deck contractor, and help to ensure that your
deck project is completed on time and budget.
How to Finance your Deck Project -
can help provide funds for your new home improvement project if financing is
required.
Deck Installation Tools from Amazon.com
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