How To Attach A Ledger Board To Sheet Metal Siding

To install the furring strips start by cutting them to size so they run from one end of the surface to the other.

How to attach a ledger board to sheet metal siding.

Fasten the ledger board with 1 2 inch bolts and washers. In order to install the ledger board you usually need to remove the house s siding. Step 5 attach ledger board. Secure flashing with galvanized nails.

Never install a ledger board over the top of siding no matter what you hear this can weaken the connection. A ledger relies on the fasteners and strength of the wood ledger board and rim board of the house to carry the deck live and dead loads. Metal or plastic cap flashing covers the top of the ledger with a drop leg of 1 2 in. Measure the exact width and length of the ledger board with a tape measure.

Then slip flashing behind the siding covering the top edge of the ledger. Get 4 inches of the flashing under the bottom of the siding. Drill 1 2 inch holes through the ledger board into the planks between joists. Slip the flashing under the siding so it will cover the ledger board.

Make the outline large enough to include space for the deck boards on top the ledger and any trim boards on the sides. Gap between the end of the ledger and the ends of siding and fill it with high quality exterior caulk to keep water from leaking behind the ends of the ledger. The chalk line should be about 1 inch below the door that will open onto the finished deck. Properly installing a ledger board for your deck is one of the most important structural components of building a safe and strong deck.

Slip stainless steel washers between the ledger and the siding to allow water to flow behind the ledger. Next snap a chalk line across the siding the same length of the board. Putting up furring strips will help even out the surface you re working on so the metal siding doesn t look wavy. Attaching a deck ledger securely is only half the work of installing a ledger.

Start by making an outline on the siding where you want to position the ledger board. Aluminum and vinyl siding can easily be removed with tin snips from an area one foot surrounding the ledger board location. Using a 4 foot level check to make sure the line is straight. Covered by the wrb and siding.

Attach the ledger with 1 2 inch diameter lag screws or bolts every 16 inches or as specified by local building codes. Anchor deck joists to the ledger with joist hangers filling each hole with galvanized joist hanger nails rated for pressure treated wood. If you can t get behind the joist to cinch down nuts use lag screws.