Drag to turn it. 3D model render, drawn from the plan itself; photos of the finished piece are coming soon.
Stack Sofa
Slatted arms and a slatted back on a deep 2x10 plinth, after a $3,400 eucalyptus sofa. Pick 2 seats (55 inches) or 3 seats (79 inches): both are in the plan, sized around standard 24-inch deep-seat cushions. Every slat is a plain 2x4, spacer blocks set every gap, and every board fits on an 8 ft board.
- Skill
- Level 1–2
- Build time
- About a weekend
- Size
- 79" × 34½" × 24¾"W × D × H
- Lumber
- 25 boards, all 8 ft
- Sofa, 3 seats79 × 34½ in
- Loveseat, 2 seats55 × 34½ in
Each with its own cut list, shopping list, PDF and 3D guide.
Make it a set: Stack Lounge SetStack Sofa + Stack Lounge Chair + Stack Ottoman plans for $59Save $18See the free 3D build guide previewGive it as a giftBuild-ready or your money back. If anything in the plan doesn't work as drawn, email us within 30 days for a full refund.
You buy the materials at Home Depot, not here. Cedar: from $860. Cushions extra, from $64.
- Printable plan and interactive 3D build guide
- One-trip Home Depot shopping list
- Yours to keep. Build it as many times as you like
101 parts, only 4 lengths.
Every part gets a letter you pencil on its end. The drawings, the cut list, the cutting diagrams and the 3D guide all use the same letters, so you always know exactly which board you are holding.
- DrawingsFront, side and top views with dimensions
- Cut listEvery part by letter, board and length
- Cutting diagramsWhich part comes from which 8 ft board
- 8 stepsEach with time, check and common mistake
Try the build guide before you buy.
The first 2 of 8 steps are free. It’s exactly what you’ll follow in the garage, on your phone or laptop.
- Watch each step build itself, board by board, screw by screw.
- Spin and zoom the model with your finger or mouse.
- Tap any board to see its letter and cut size.
Try steps 1–2 freeOne list. One trip to Home Depot.
| Item | Qty |
|---|---|
| 2x10 × 8 ft pressure-treated pine, #2 Prime | 3 |
| 2x4 × 8 ft pressure-treated pine, #2 Prime | 19 |
| 5/4 × 6 in. × 8 ft pressure-treated deck board (spacer blocks) | 3 |
| 2-1/2" exterior wood screws, rated for treated lumber (hidden joints) | 22 (1 × 1 lb box) |
| 2-1/2" exterior trim-head screws, rated for treated lumber (seat slats) | 56 (1 × 1 lb box) |
| 5" structural wood screws (GRK RSS or SPAX) | 24 (1 × 25-pack) |
| 4" exterior structural screws (GRK RSS or SPAX), for the stacked walls | 144 (3 × 50-pack) |
| Behr semi-transparent stain & sealer, Cedar Naturaltone | 2 qt |
- Estimated build cost
- $340–$375
- BudgetHampton Bay CushionGuard 24 × 24 deep-seat setSeat and back, per seat · 3 needed$64
- PremiumGreendale Sunbrella 24 × 24 deep-seat setSeat and back, per seat · 3 needed$112
- Pick #2 Prime boards and sight down each one. Take the straightest and grab one spare of each size.
- Treated pine comes wet. Stack the boards flat with scrap spacers between them, out of the sun, for 2–3 weeks before you cut. Dry boards don't shrink or twist after you build.
- Use screws labeled for treated lumber (most coated exterior screws are).
- Sand the faces and edges smooth, then stain once the wood is dry. A cedar-tone stain gives it the honey look in the photos.
- Wear a dust mask when cutting and sanding treated wood, and never burn the scraps.
Estimates based on typical Home Depot prices; your store may vary. Same cuts and same steps in either wood. The list updates with the version you pick.
8 steps · about a weekend
- 1Cut the partsFree in 3D1 hr 15 min
- 2Build the plinthFree in 3D45 min
- 3Add the joists30 min
- 4Lay the deck45 min
- 5Lay the first course30 min
- 6Stack courses 2 and 31 hr
- 7Stack courses 4 to 61 hr 15 min
- 8Finish and add the cushions1 hr + drying
Good to know
Which sizes are included?
Both: a 2-seat loveseat, 55 × 34½ inches, and a 3-seat sofa, 79 × 34½ inches, each with its own cut list, shopping list, PDF and 3D guide.
Which tools do I need?
A drill/driver, a miter saw or circular saw, a tape measure, a speed square, two clamps and a sanding block. Every cut is a straight crosscut, and every joint is wood on wood with screws: no pocket holes, no glue-ups, no brackets.
How do the slats get even gaps?
Spacer blocks. You cut them all the same from a 5/4 deck board against a stop block, lay them on each course, and set the next course on top. Each course is screwed down through the blocks into the one below, and the next course's blocks hide the screw heads.
Can I build it in pine to save money?
Yes. Every version comes with a second shopping list in pressure-treated pine, with the same cuts and the same steps. Pine needs a couple of weeks to dry and a coat of cedar-tone stain, but costs well under half as much as cedar.
Does it go with the rest of the Stack collection?
Yes. The chair, the sofa and the ottoman share the same 2x10 plinth, the same 15¾-inch seat and the same honey finish, so any mix makes a set.
Which cushions does it use?
Standard 24 × 24 deep-seat sets, one per seat, bought ready-made. Home Depot's Hampton Bay CushionGuard set is about $64 a seat, or a Sunbrella set about $112.
Can one person build it?
Yes. Every part can be lifted by one person, and the walls are stacked one slat at a time in place, so nothing heavy has to be stood up.