Securing A Deck To A House With I Joist Flooring

Install the ledger between the rim joists and fasten it to the house with 3 inch decking screws.

Securing a deck to a house with i joist flooring.

If you don t want posts and a beam at the house side of the deck then you ll need to run the deck joists into the house floor joist system so the ends rest on top of a bearing wall or mudsill inside. For wood decking using deck clips the first board is nailed or screwed to the joists as above. Dia galvanized or stainless steel lag screws in every other joist space alternating up and down positions to keep the ledger from splitting. Deck ledgers cannot be attached to these i joists or nonstructural plywood rims.

Attaching a deck ledger board to engineered floor joists floor truss systems are very different from conventional floor framing materials. Wood i joist manufacturers assoc when a deck is attached to a house with an i joist floor system where the joists are parallel to the rim joist blocking and fasteners must be added as shown before installing the lateral load anchors. To install the clip you drive a nail at an angle through the hole in the vertical neck of the clip and on through the decking and into the joist. Anchor deck joists to the ledger with joist hangers filling each hole with galvanized joist hanger nails rated for pressure treated wood.

A similar detail is available from wijma for when the i joists are oriented perpendicular to the rim joist. The easiest way to do this is to remove the existing house rim joist and soffit and any insulation inside the cavities. Like a roof truss floor trusses are created through joining standard lumber typically 2x3 or 2x4 with metal connectors. There is no support below it.

Another nail ties the clip directly to the joist. Predrill and sink 1 2 in. When i was framing floors with i josts in the late 80s engineered rim board was not available and we closed the rim with either an i joist or 3 4 inch plywood ripped to the i joist height.