What flashing tape means
Flashing tape is a self-adhering membrane used to seal around windows and doors, over ledgers and on top of deck joists to keep water out of the wood.
Also called joist tape, self-adhered flashing.
Where it matters on a deck job
Taping joist tops is cheap and extends the life of a wood frame under the decking. On windows, lapping the tape in the right order is what keeps water out.
What it costs
Jobs that involve flashing tape are priced in the deck repair cost guide: about $1,850 typical, usually $700 to $3,350. The guide shows its sources and what moves the price. The deck cost calculator prices a job line by line.
Work it out
- Free calculator: Deck cost calculator
- Cost guide: Deck repair cost
- Tools, templates and guides: Free deck resources