Sandy Hook Deck

8133 Sandy Hook Terrace · Clinton, WA 98236 · Deck resurfacing (Trex Hideaway) · Tear-off Apr 21–25 · Resurface May 5–16

Owner
Eddie Mulcahy · 360-914-1789
General Contractor
Tristan Johnson · 360-969-2659

Deck layout — top-down view

Looking down at the deck from above. 52' along the house (Kitchen wing 11' + Walkway 25' + Hot tub wing 16'). Full tear-off, joists staying. Trex Enhance Naturals Rocky Harbor 1×6 grooved edge with Hideaway hidden fasteners. Zone 1 Kitchen uses classic 45° herringbone pattern as a visual centerpiece; all other zones (North Seating, South Seating, Walkway, Zone 5) run boards N-S parallel to the compass N-S axis for unified flow. Bar runs 157" along the north edge with 24" east extension.

HOUSE COOKING RUN 130" (east) WINDOW WALL 130" (west) FRIDGE 108" ZONE 1 Herringbone 45° ZONE 3 — WALKWAY 289"×37" — N-S boards ZONE 2 — NORTH SEATING 114"×157" — N-S boards BAR 157" ZONE 4 — SOUTH SEATING 139"×157" — N-S boards 16' stair span — 5 treads HOT TUB (off-deck) ZONE 5 181"×121" — N-S Bench seat — Trex, 18" h 4×8 posts @ 48" o.c. Board flow — N→S all zones 52' total along house E W N S

At-a-glance specs

Total length along house52' (Kitchen wing 11' + Walkway 25' + Hot tub wing 16')
Deckable area~665 sq ft across 6 zones
Decking productTrex Enhance Naturals 'Rocky Harbor' 1×6 grooved edge
Fastener systemTrex Hideaway UNIVCOMBOCLIP01 hidden fasteners
Pattern (Zone 1 only)Classic 45° herringbone — boards mitered at 45° meeting at a center seam. Short-length planks (likely 12–18" cuts from 12' stock). Picture frame border in contrast color recommended.
Pattern (Zones 2–6)Straight-lay, all boards flow N-S (parallel to the compass N-S axis). Walkway, North Seating, South Seating, and Zone 5 all run boards in the same direction for unified visual flow — herringbone in Zone 1 provides the contrasting centerpiece.
Bench seatsN Seating: 3 Trex boards wide (~17" deep seat) along east edge north of stairs only (~46" linear). NO bench along west edge — that's where the bar peninsula sits. S Seating: 2 Trex boards wide (~11" deep seat) along south edge (~82") + east edge after stairs (~37"); total ~119" linear. Zone 5: 3 Trex boards wide forming L-shape along outer perimeter — north edge/hot tub border (~146") + east edge (~100"); total ~246" linear. NO bench along Zone 5 south edge — that edge is in front of the house wall. All benches 18" standard seat height. Total ~411" (~34 linear ft).
Bench structure4×8 wood posts at 48" o.c., built into joists (integral with framing). ~13 posts total. Trex Rocky Harbor seat boards match decking. Additional bench material estimate: ~4× 16' + ~3× 12' Trex boards (seat surface) + ~5× 8' 4×8 posts.
Boards ordered151 (126×16' + 25×12') — Home Depot orders WN54641427 + WN54779681. Herringbone (~+2) + benches (~+7) may require additional stock — see Board calc for revised totals.
Fasteners ordered5 packs (250 sq ft coverage) — ~6 more packs needed. Herringbone in Zone 1 increases fastener density slightly.
Joist spacing16" o.c. — verify during tear-off. Zone 1 herringbone requires blocking between joists at 45° miter seams for clip support.
Schedule windowTear-off Apr 21–25 · Resurface May 5–16 (parallel with kitchen framing)
Deckable area
~665 sq ft
Zones
6
Fastener system
Hideaway hidden
Boards ordered
151 ✓
Zone breakdown (decked surface): Zone 1 Kitchen 96"×47" (classic 45° herringbone — ~39 sq ft inside counters; board count + material TBD pending mitered-cut calc) · Walkway 289"×37" (E-W, 51 boards, 8' cuts) · North Seating 114"×157" (E-W, 20 boards, 16' stock, bar 157" on north edge with 24" east extension) · South Seating 139"×157" (E-W, 25 boards, 16' stock) · Zone 5 Hot Tub 181"×121" (N-S, 22 boards, 16' stock) · Stairs 192"×~11" (N-S, 5 treads × 2 boards = 10, 16' stock). Wings run N-S for directional contrast against the E-W center. Picture frames with directional contrast on all zones. Herringbone in Zone 1 changes material math — see Board calc panel for revised count.
Bench seats (continuous outer perimeter, 3 zones): Built-in Trex Rocky Harbor bench seats, 18" standard seat height, built into joists with 4×8 wood posts at 48" o.c. N Seating: 3 boards wide seat along the east edge north of stairs only (~46" linear). No bench along the west edge — that's where the bar peninsula is built. S Seating + Zone 5 (continuous): S Seating south edge (~82") + S Seating east edge after stairs (~37") + Zone 5 north edge/hot tub border (~146") + Zone 5 east edge (~100") = ~365" continuous L-shape along outer perimeter. No bench along Zone 5 south edge — that edge is in front of the house wall. Total bench seating: ~411" (~34 linear ft). Adds ~7 Trex boards + ~5× 8' 4×8 posts to the material list. See Board calc panel for detailed math.

Board calculations — actual order vs plan

Coverage per board: 5.75" (5.5" board + 0.25" gap). Grooved edge with Trex Hideaway hidden fasteners. Zone 1 Kitchen = classic 45° herringbone (short mitered planks). All other zones = straight-lay with directional contrast.

Zone 1 herringbone math

Classic 45° herringbone uses short planks with 45° miter cuts on both ends. Each plank body length is typically ~2× the board width = ~11" usable (from a 1×6 Trex = 5.5" actual). Below is the working estimate — Tristan to confirm actual plank length during layout.

Line itemValueNotes
Field area~31.3 sq ft96"×47" kitchen interior (4,512 sq in)
Target plank body11" longShort cut from 12' stock; 5.5" wide (1×6 board width)
Miter waste per plank~18%Two 45° miter cuts per plank — typical field waste for herringbone
Useful coverage per plank~55 sq inAfter miter cuts, accounting for interlock geometry
Planks needed (field)~824,512 sq in ÷ 55 = 82 interlocking planks
Waste buffer (~18%)+15Bad cuts, off-cuts at perimeter, pattern-matching at picture frame edge
Total planks needed~97Subject to Tristan's actual layout plan
Planks per 12' board~1212' = 144" ÷ 11" plank = 13 cuts, minus end-of-board waste = 12
Field boards of 12' stock~997 planks ÷ 12 per board
Picture frame border (Zone 1 perimeter)+2Contrast-color straight-lay border framing the herringbone field — 2× 12' boards
Zone 1 total: 12' boards~11Prior straight-lay plan was 9 boards; herringbone adds ~2 boards
Why herringbone uses more material: The 18% miter-cut waste is unavoidable, but the short-plank approach actually makes the 1×6 board stock more efficient than straight-lay in some ways — no 8' or 16' pieces needed for Zone 1, all usable from 12' stock. Expect ~2 extra 12' boards vs. the original straight-lay plan, plus the picture-frame border material.

Zone board requirements

ZoneField areaBoard dir. / patternBoard lengthBoardsStock
Zone 1 — Kitchen96"×47"45° herringbone~11" planks (mitered)~11*12'
Walkway289"×37"E-W straight37" (3.1')518' cuts
North Seating114"×157"E-W straight157" (13.1')2016'
South Seating139"×157"E-W straight157" (13.1')2516'
Zone 5 — Hot Tub181"×121"N-S straight181" (15.1')2216'
Stairs (5 treads)192"×~11"N-S straight192" (16')1016'
Total field + stairs~139

*Zone 1 herringbone: 9 field-pattern boards + 2 picture-frame border boards. See herringbone math table above.

Actual order vs. original plan

LengthPlannedOrderedDeltaNotes
8'290-29Cut from 16' stock instead
12'1925+6Need +2 more for Zone 1 herringbone. Current 25 may be short by 2 boards.
16'102126+24Replaces 8' + 20' needs
20'40-425' frames spliced from 16'
Total154151-3Extra length compensates on non-Zone-1; Zone 1 needs herringbone-specific recalc before tear-off

Bench seat math

Built-in Trex bench seats along outer deck edges, 18" seat height. 4×8 wood posts built into joists at 48" o.c. carry both bench load and tie into deck framing. Bench geometry: NO bench where the Bar peninsula sits. NO bench along Zone 5 south edge (in front of house wall). S Seating south edge + Zone 5 north + east edges form a continuous L-shape along outer deck boundary. Working estimate — Tristan to confirm exact post count during framing.

LocationBoards wideSeat depthLinear runTrex boardsStock mix
N Seating bench3~17" (3×5.5" + 2×0.25" gaps)~46" (east edge, north of stairs only — no west edge: bar peninsula is there)~11× 16' (covers 3 boards of 46")
S Seating bench2~11" (2×5.5" + 1×0.25" gap)~119" (south edge 82" + east edge 37")~22× 12'
Zone 5 bench (L-shape)3~17"~246" (north edge/hot tub border 146" + east edge 100")~43× 16' (north edge) + 1× 12' (east edge)
Total bench seat material~7 Trex boards~4× 16' + 3× 12'

4×8 posts (structural, built into joists)

Line itemValueNotes
Total bench linear run~411" (34.3 ft)N Seating 46" + S Seating 119" + Zone 5 L-shape 246"
Posts at 48" o.c.~9411" ÷ 48" = 8.6 posts along bench runs
Corner + termination posts+4S Seating L-corner + Zone 5 NW corner (connecting to S Seating) + Zone 5 NE corner + bench-end terminations
Total 4×8 posts~13Pressure-treated wood (not Trex) — structural, encased or wrapped as finish dictates
Post length per piece~34"18" above deck (seat height) + 16" below deck (into joist framing)
Posts from 8' 4×8 stock2.8 / 8' piece8' = 96" ÷ 34" = 2.8 useful pieces per 8' stick
Total 8' 4×8 lumber~5 pieces — source from lumber yard (not Home Depot; Trex HD order doesn't include framing stock)
Bench structure note: 4×8 posts tie directly into joist framing — this means posts must be located and positioned during Phase 4 framing (May 2–9), not added afterward. Tristan to mark post locations on joist layout before deck boards go down. Post penetrations through the decking are a one-shot cut — measure twice.
Ordered
250 sq ft
Deck area
~550 sq ft
Shortfall
~300 sq ft
Packs needed
~11–12 total
have 5, buy 6–7 more
Action — Eddie by May 1: Order 6–7 more Trex Hideaway UNIVCOMBOCLIP01 packs (50 sq ft/pack, 16" o.c. spacing: 1 clip per joist = ~9 clips per 12' board, ~12 clips per 16' board). Home Depot SKU 513114. Zone 1 herringbone needs ~1 extra pack — denser fastener pattern along the 45° miter seams + clips on shorter planks. Alternative: screw-down under kitchen counter footprint (those areas won't show fasteners), which could close the gap without needing the full 7 packs.

Deck-specific open items

ItemDetailOwner
Zone 1 herringbone layout planTristan to confirm plank length (currently estimated at 11" / ~2× board width) and layout direction before cutting. Actual layout determines picture-frame border dimensions, blocking locations, and final board count. Recommend dry-lay first row to visualize before committing to cuts.TRISTAN — before Phase 5 (May 5)
Zone 1 joist blocking for herringboneHerringbone's 45° miter seams don't line up with 16" o.c. joists. Additional blocking between joists required at each miter seam to give Hideaway clips something to bite. Estimate: 1 block per 2 sq ft of herringbone = ~15 extra blocks in Zone 1 alone.TRISTAN — Phase 4 blocking
Additional 12' boards for Zone 1Current order has 25× 12'; herringbone needs ~11 for Zone 1 (9 field + 2 border), leaving only ~14 for all other 12' needs. Confirm buffer or order ~2 more.EDDIE — verify by April 28
Picture frame border colorHerringbone in Zone 1 reads best with a contrast-color border. Options: same Rocky Harbor (subtle), or a contrast Trex color. Current order is all Rocky Harbor — decide whether to add contrast SKU.EDDIE — decide by April 28
Fascia perimeterMeasure during tear-off; wood fascia quantity TBD until exposed edges are measured.TRISTAN — Phase 2
Stair tread countAssumed 5 treads × 2 boards = 10; verify during tear-off.TRISTAN — Phase 2
Joist spacingConfirm 16" o.c. across all sections; affects Hideaway fastener spacing.TRISTAN — Phase 2
Fastener shortfall decisionOrder 6–7 more packs OR screw-down under kitchen counters.EDDIE + TRISTAN — Phase 5