Choosing the Wall Material: Rustic Pine Planks

Finished rustic pine plank walls in the shed gym with a window, outlets, and concrete floor

The Tuff Shed shows up with bare studs and house wrap. That’s fine for storing lawn equipment, but if you’re going to spend an hour a day in there, the walls are the biggest surface in the room and they set the entire tone. I didn’t want drywall. I wanted warm, rustic wood — the kind of room that makes you want to walk in.

Start with the vision

I started with an AI-generated design render: wood plank walls, a black ceiling, open rafters, string lights. That image was the north star for the whole build — everything since has been about making the real shed look like that render.

AI-generated design render of the shed gym: wood plank walls, black ceiling with open rafters, string lights, and a folding chair

Narrowing down the wood

I looked at the full lineup of species — alder, ash, oak, walnut, knotty pine, all of it. For a gym shed the math is simple: you’re covering a lot of square footage, so you want something affordable that looks good with knots and character. Pine won — specifically a 1×8 pine V-rustic plank. My carpenter held up the actual sample against the studs so we could see it in place before committing.

Wood species sample page showing alder, ash, birch, cherry, fir, hemlock, hickory, knotty alder, knotty pine, mahogany, maple, oak, pine, poplar, walnut, and white oak options
Carpenter holding a 1x8 pine V-rustic plank sample against the shed’s wall studs next to a window

Go at least 1/2″ thick

One thing worth knowing: don’t go thinner than 1/2 inch. Thin planks flex between the studs and feel cheap the first time you lean a bench against them. 3/4 inch is even better — or add more support behind the walls — but the cost climbs fast. 1/2 inch was the sweet spot: solid feel without blowing the budget.

The details a good carpenter brings

Here’s where hiring a real carpenter pays off: the window trim. Deep jambs, tight mitered corners, clean joints where the casing meets the plank walls. This is the stuff you can’t get from a kit — someone who knows how to make wood meet wood look intentional.

Close-up of the deep wood window jamb and trim meeting the pine plank wall
Close-up of a mitered trim joint at the corner of a shed window sill
Close-up of wood casing trim around a door meeting the pine plank wall

The finished walls

Finished rustic pine plank walls in the shed gym with a window, outlets, and concrete floor

Wall to ceiling, the planks run floor to roof with a clean trim line where they meet the open rafters.

Pine plank wall meeting the ceiling with wood trim below the open rafters

I wrote more about how the walls fit the overall look in the vibes post.

Cartoon illustration of Matt with his signature

Hi, I’m Matt — I turned a Tuff Shed in our California backyard into a home gym. This blog is the build diary: the process, the gear, and everything I learned. More about the project →

Shed Gym Project — Design, Build, Lift logo

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  1. Keeping the Shed Livable: Temperature and Moisture – Our Gym Shed Project Avatar

    […] The ceiling stayed open because I wanted the rafters showing — that was part of the look from the start (more in the walls post). […]

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