How much does flashing tape and ledger board hardware cost for a deck in New Brunswick?

Flashing tape and ledger board hardware for a typical NB deck will cost $150-400 in materials, depending on your deck size and the quality of components you choose. This represents about 2-3% of your total deck cost but prevents the most expensive failure mode — water damage to both your deck and house structure.

For flashing tape, expect to pay $8-15 per linear foot for quality self-adhering membrane like Grace Vycor or similar. A typical 16-foot ledger board needs about 20 linear feet of flashing (accounting for overlap and vertical runs), so budget $160-300 for flashing tape alone. Don't skimp here — cheap flashing fails in NB's freeze-thaw cycles, and water intrusion behind your ledger board can cause thousands in structural damage to your house rim joist and sill plate.

Ledger board hardware varies significantly based on your attachment method. For a 16-foot ledger, you'll need 8-10 lag bolts spaced 16" on center. Quality ½" x 6" galvanized lag bolts cost $8-12 each, so budget $80-120 for fasteners. Add galvanized washers ($2-3 each) and you're looking at $100-150 total for hardware. If you're using structural screws instead (like GRK or FastenMaster), expect $3-5 per screw with similar quantities needed.

Additional components include through-bolts if your ledger spans a house corner ($15-25 each), joist hangers for the ledger connection ($3-5 each), and galvanized joist hanger nails ($20-30 per box). Many builders also add a drip cap above the ledger ($15-25 per 10-foot section) for extra weather protection.

In New Brunswick's Maritime climate, proper ledger flashing isn't optional — it's critical. Our high humidity, driving rain, and freeze-thaw cycles make ledger board failure the #1 cause of deck-related house damage. The flashing must extend up the wall sheathing at least 6 inches and lap over any house wrap or building paper. Many NB contractors also add a bead of polyurethane sealant behind the ledger before installation.

Quality matters significantly with these components. Marine-grade or stainless steel hardware adds 30-50% to cost but performs much better in our coastal humidity. Similarly, premium flashing tapes with 20+ year warranties cost more upfront but eliminate callback repairs.

Professional installation is strongly recommended for ledger board attachment — improper flashing or fastener placement can cause catastrophic deck failure or extensive house damage. Most NB deck builders include proper flashing and hardware in their base pricing, but verify this covers quality materials, not just the minimum code requirements.

Need help finding a deck builder who understands proper ledger board installation? New Brunswick Decks can match you with experienced local contractors who prioritize structural integrity and weather protection.