![]() ![]() Your goal is to make sure water does not get to the wood, and failing that does not stay trapped in contact with wood to kickstart rot.Ĭheck out the diagrams in this link, it will give you a good idea of what you should be trying to do. The ledger board is attached to the exterior wall of the house, providing a secure connection between the deck and the main structure. The size of the plank must be minimum 2 inches by 6 inches, but the best size for this. This technique requires a plank of wood to be secured to the outside wall and to the outside rim of the deck to create 'ledges' where the joists would rest for support. At the price of 10' good grade PT, this will add substantial cost. The joist hangers are secured to the second ledger board. The bolts through the house have also created holes in the vinyl and housewrap allowing moisture in. Properly fastening a ledger board is essential to ensure the structural integrity of the deck. The most common alternative to using joist hangers is a ledger strip. Now, instead of simply securing the joist to the ledger board you have installed correctly, you fasten another, same size, ledger board to the first ledger board space out a 1/4 inch. Always follow the manufacturers installation instructions when installing deck hardware. The hold down device will have a minimum 750 lb capacity at 4 locations evenly distributed along the deck and 1 within 2 of each end of the ledger board. Crushing the vinyl simply means water will drip down the side of your house and behind the ledger board, possibly get stuck there and cause rot. This L-shaped hold down bracket is then screwed to the bottom of the deck joist. It can't hurt and I guarantee it will work with no water leak issues if you sink your lags in with a good caulking.I don't understand the reasoning behind this advice. Use a combination of 8’ and 16’ 2x10s, so that the joint between boards always breaks on one of the posts. ![]() Then, secure them to the posts and the ends of the ledger boards on either side of the deck area. If you don't like the result you can always take it off and remove the crushed siding.īTW when you install your flashing it should go under the membrane too and if you rip the membrane you should replace it, which would mean more siding to remove. To assemble the beam, rest a layer of 2×10 boards on the notches you cut out in your posts. Nail undersill trim (J-channel will also work) over the bottom cut, using 11-gauge aluminum nails. Make the outline large enough to include space for the deck boards on top, the ledger and any trim boards on the sides. Find the number of decking boards needed (plus 10 for waste ): 144 ft² / 4 ft² × 1.1 40. Calculate the square footage of the decking board: 8 ft × 0.5 ft 4 ft². Choose the size of a single decking board, e.g., 8 ft long and 0.5 ft wide. You don't need a flashing if you crush the vinyl. Start by making an outline on the siding where you want to position the ledger board. Calculate the square footage of the deck: 12 ft × 12 ft 144 ft². ![]()
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