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Front-wall design updated (Jul 2026) —
2 doors (6' sliding barn door near center + 36" re-used hinged door on right) and
three 48"×12" fixed single-pane windows evenly spaced across the top; see
updated elevation. Front-wall framing, headers, doors and windows below are
re-priced for this layout. Still open:
sliding-door track/hardware kit (self-built slab, kit not priced) and exterior casing/paint.
Estimated Total
ACX siding + ACX qty TBD · doors/windows not priced
~$3,566+
Still needed: exterior siding type · exact length: 20'
| Item | Spec | Qty | Unit | Total |
|---|
| 2×4×16' studs (cut to 13') | Full-height + kings/trimmers/cripples/sills for 2 doors + 3 windows; 3' offcuts cover cripples. Estimate — confirm at layout | 28 | $11.32 | $316.96 |
| 2×4×8' — double top plate | 2 runs × 20' = 40 LF → 5 boards | 6 | $3.98 | $23.88 |
| 2×4×8' — bottom plate | 20 LF → 3 boards | 3 | $3.98 | $11.94 |
| 2×6×8' — 36" door header (DBL) | 36" door (~38" RO); doubled 2×6; one 8' board = both plies | 1 board | $8.73 | $8.73 |
| 2×6×8' — window headers (DBL ×3) | 48" windows (~50" RO); doubled 2×6; 2 boards/header × 3 windows | 6 boards | $8.73 | $52.38 |
| 2×10×8' #2 Premium Fir — 6' sliding door header (DBL) | 72" opening (~74" RO); doubled 2×10; doubles as solid backer for surface-mount track lag bolts; 2 boards | 2 boards | $16.78 | $33.56 |
Openings: 6' sliding door (center) + 36" hinged door (right); three 48"×12" fixed windows evenly spaced across the top. Barn-style slider is surface-mounted over the siding — anchor the track into the DBL 2×10 header/backer, and keep solid wall left of the opening for the door to slide onto.
| Item | Spec | Qty | Unit | Total |
|---|
| 2×4×10' studs | 16" OC; 20' wall = 16 studs; no openings | 18 | $7.07 | $127.26 |
| 2×4×8' — double top plate | 2 runs × 20' = 40 LF → 5 boards | 6 | $3.98 | $23.88 |
| 2×4×8' — bottom plate | 20 LF → 3 boards | 3 | $3.98 | $11.94 |
| Item | Spec | Qty | Unit | Total |
|---|
| 2×4×16' studs (cut to angle) | Tapered 10'→13' at 6:12 pitch; 6 studs/wall × 2 walls | 12 | $11.32 | $135.84 |
| 2×4×8' — bottom plates | 2 × 6' = 12 LF → 2 boards | 2 | $3.98 | $7.96 |
| 2×4×8' — angled top plate | Single plate cut to 26.6° (6:12); 2 × 6' → 2 boards | 2 | $3.98 | $7.96 |
Use 16' stock for studs — cut each to correct height and bevel. Top plate cut at 26.6° to match rafter bearing (6:12 pitch).
| Item | Spec | Qty | Unit | Total |
|---|
| 2×4×16' studs (cut to angle) | Same taper as end walls; 6 studs/wall × 2 walls | 12 | $11.32 | $135.84 |
| 2×4×8' — plates | Top + bottom per wall; 2 × 2 × 6' = 24 LF → 3 boards | 3 | $3.98 | $11.94 |
Bay positions ~6'8" and ~13'4" from left — confirm against door RO widths before layout.
| Item | Spec | Qty | Unit | Total |
|---|
| OSB 7/16" 4×8 | Front (~230 sq ft net) + back (200 sq ft) + 2 end walls (~138 sq ft) = ~568 sq ft → 20 sheets with waste. Front wall needs 2 rows (8' + 5') due to 13' height. | 20 | $8.81 | $176.20 |
| Tyvek HomeWrap 3'×165' (495 sq ft/roll) | Over all OSB sheathing before siding; ~740 sq ft needed (gross walls + 10% overlap); 2 rolls = 990 sq ft — overlap seams 6" min, tape all joints | 2 rolls | $109.00 | $218.00 |
Install house wrap/felt over all OSB before siding — horizontal runs, overlap 6" minimum, tape seams. Roof deck OSB (7 sheets) is in the roof materials list.
| Item | Spec | Qty | Unit | Total |
|---|
| Rockwool Safe'n'Sound 3"×15-1/4"×47" batt (59.7 sq ft/bag) | Back wall only: 20'×10'=200 sq ft → 4 bags. Sides & front: standard fiberglass batts if/when insulation is added later | 4 bags | $83.98 | $335.92 |
Back wall only for sound blocking — solid wall, no openings, most effective location. Stone wool outperforms fiberglass for sound. Friction-fit in 2×4 bays; no fasteners needed. Sides and front: add standard R-13 fiberglass batts later if desired (heat/cold, not sound priority).
| Item | Spec | Qty | Unit | Total |
|---|
| 3-1/4" × 0.131" galvanized framing nails (1,000-ct) | 21° plastic collated; Freeman PFR2190 compatible; covers all wall framing + beam lamination (floor list) | 1 box | $52.48 | $52.48 |
| 2-3/8" × 0.099" galvanized ring shank coil nails (3,000-ct) | 15° wire coil; OSB sheathing — all walls + roof deck; coil nailer (rent) | 1 box | $73.88 | $73.88 |
| 12d joist hanger nails 1-1/2" — 1 lb. | Hurricane tie fastening; palm nailer | 2 boxes | $6.98 | $13.96 |
| 1/2" × 4" hex galvanized lag screw (25-pk) | Back wall ledger attachment; 18 lags needed; 1 pack sufficient | 1 pack | $72.45 | $72.45 |
| Item | Spec | Qty | Unit | Total |
|---|
| Freeman PFR2190 pneumatic framing nailer | 21° plastic collated; 2"–3-1/2"; wall framing + rafters | 1 | $127.55 | $127.55 |
| Freeman PMPN mini palm nailer | Hurricane ties, joist hangers, tight-spot toenailing | 1 | $30.00 | $30.00 |
| Coil nailer rental | 15° wire coil; OSB sheathing day; estimate | 1 day | $50.00 | $50.00 |
| Item | Spec | Qty | Unit | Total |
|---|
| ½" ACX Plywood 4×8 — exterior face |
A-face smooth for paint; over Tyvek; front (~10 sheets) + back (~8 sheets, 2 rows 8'+2') + end walls (~4 sheets each, tapered) = ~20 sheets; prime all 6 sides before install |
~20 sheets |
~$50.00 |
~$1,000.00 |
| 1×4×12' Primed Finger-Joint Trim — battens & corner boards |
Board-and-batten at every 4' panel seam + outside corners; front battens/corners join at Z-flashing line (8'+5'); back & end boards single piece; 25 boards total |
25 boards |
$14.93 |
$373.25 |
| 36" hinged door ×1 — re-used / on hand |
Right opening; existing door; approx cost for hardware, weatherstrip, hinges |
1 |
~$50.00 |
~$50.00 |
| 6' sliding barn door — self-built |
Center opening; built on site (slab not priced). Surface-mount barn track/hardware kit TBD — slides over exterior siding onto solid wall at left |
1 |
TBD |
TBD |
| Fixed windows ×3 — hand-built (48"×12") |
Single-pane glass, fixed; high transoms above the 60" safety-glazing zone (annealed OK). Glass ~$30/ea + frame lumber/stops/glazing points/caulk ~$20/ea |
3 |
~$50.00 |
~$150.00 |
| Door & window casing/trim |
Exterior trim around all openings; 2 doors + 3 windows |
TBD |
— |
TBD |
| 1×2 battens — board-and-batten siding |
~75 boards @ 8–12" OC over ACX face; approx |
~75 boards |
~$3 |
~$200 |
| Exterior primer + paint |
~600 sq ft gross exterior; 2 gal primer + 2 gal exterior paint; approx |
4 gal |
~$50 |
~$200 |
OSB → Tyvek → ACX → 1×2 or 1×4 battens. Prime all 6 sides of ACX before install. Hand-built doors and windows: Z-brace or board-and-batten style; use exterior-rated lumber and hardware throughout.
| Front Wall framing | $447.45 |
| Back Wall framing | $144.96 |
| End Walls ×2 | $151.76 |
| Interior Partitions ×2 | $147.78 |
| Wall Sheathing (OSB + Tyvek) | $394.20 |
| Sound Insulation (Rockwool, back wall) | $335.92 |
| Hardware | $212.77 |
| Tools | $157.55 |
| ACX Siding (~20 sheets) | ~$1,000.00 |
| 1×4 Corner Boards & Trim | $373.25 |
| 36" hinged door ×1 (re-used) | ~$50.00 |
| 6' sliding door (self-built; hardware TBD) | TBD |
| Fixed windows ×3 (hand-built, 48"×12") | ~$150.00 |
| 1×2 battens + paint | ~$400 approx |
| Door/window casing/trim | TBD |
| Total (excl. casing, paint & slider hardware) | ~$3,566+ |