I'm renovating a deck. Installing waterproof spline which goes between deck boards. Solution will have center boards in deck with gutters underneath and gutters around the deck. Install guide says to make sure deck pitches by 1/8" per linear foot. This is as much as 1.5 inches across 12ft deck (my deck is an L-shape with 12 ft longest, 8ft shortest). Laser level shows current slope of MAYBE 1/4 drop if im lucky. (Hard to tell with warped deck boards.)
Raising joists near the house not an option because threshold is annoying flush with deck boards (not to mention code says joists tops are supposed to be flush with ledger). Lowering rim-joist/band board/beam is not much of an options because would involve taking apart hardiplank, plywood, many sistered boards cutting posts just to lower.
Rim joist is overbuilt per code.
- Rim joist: (2)2x12
- Joist Size: 2x8
- Joist Span: 16in
- Beam Span: <6ft
Is there some rule as to how much is allowed to be planed/cut off of a joists or rim joist? I was thinking if I could plane down 1/2in from the rim joist and a tapered 0.5 from the joists I could get 1 in drop and that would help minimize pooling. Or I can just hope for the best with the current water management and live with some pooling post rain.