A single-story addition or mudroom connection requires a ledger securely bolted through both brick and block. What types of fasteners are recommended, what spacing should be maintained, and what are the best practices for moisture isolation in this scenario? Understanding these details is crucial for ensuring a stable and durable structure.
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Use through-bolts or sleeve anchors into the structural rim joist behind the brick/block, not just the masonry, and flash well to prevent water intrusion.
For brick or block walls, avoid relying heavily on expansion anchors in the veneer; instead, fasten through to the underlying structural framing or masonry using long ledger screws or through-bolts with sleeves, sealing all penetrations to prevent water ingress.
Putting a ledger on a brick-and-block wall? Don’t just screw into the bricks! Make sure your fasteners grab the block behind them, not only the surface.
Attaching a deck ledger to brick or block requires careful planning and execution to ensure a secure and durable connection.
Anchoring Strategy for Brick
- Use masonry anchors: Masonry anchors, such as expansion anchors or wedge anchors, are designed for solid concrete and brick. They provide a strong hold and can support heavy loads.
- Drill pilot holes: Use a hammer drill to create pilot holes in the brick, then insert the anchor and attach the ledger board with lag screws.
Use through bolts or sleeve anchors into solid masonry, not mortar, with flashing for water protection.
Use structural masonry anchors or sleeve bolts through brick and block, spaced 16"–24" apart, with flashing or a moisture barrier behind the ledger and sealed penetrations to prevent water damage.
Use stainless or hot-dip galvanized ledger bolts or sleeve anchors, spaced about 16–24" apart. Include flashing and a moisture barrier behind the ledger to prevent water intrusion and decay.