Cardio Room
Run, row or ride whatever the weather.
A treadmill by the windows, a rower along the wall and a mat to cool down on. Get your miles in before work, rain or shine.
8×17 Apex Shed + Breathable roof membrane + timber base + rubber roof = £2,228.09
You’re saving £276.90 on the shed
- Free next-day delivery to the UK mainland
- Pressure-treated, 15-year anti-rot guarantee
- Most sizes built by two people in half a day to a day

Picture it
See your cardio room from every side.
The walk-inside view and the plan come straight from our 3D gym builder.
How it’s set out
A layout that works, not just kit in a shed.
Laid out by the same rules as our 3D builder: headroom, clearances and a clear way in.
- The treadmill runs by the windows, so you train in daylight, with 0.9m clear behind the belt.
- The rower goes along the opposite wall, with 0.6m behind the seat.
- A stretch mat near the doors for warming up and cooling down.
- The mirror is on the back wall and there's a clear walkway down the middle.
Pick your size
Choose your room to train.
Sizes picked by our 3D builder so your cardio room fits with room to move.
Apex: up to 2.29m high down the middle, the most headroom.
This is the Apex size this gym fits with room to train. For other sizes, try a Pent roof. Or pick any size in the 3D builder.
Make it yours
Upgrades, delivered with the shed.
Sized for your building. The recommended ones are already ticked.
Timber Eco Shield paint+£89.94
Your Cardio Room
- 8×17 Apex Shed£1,853.09
- Breathable roof membraneFree
- Pressure-treated timber base£375
- EPDM rubber roofFree
Total£2,228.09
Total £2,228.09
We sell the shed and its upgrades, not the gym kit.
From order to first session
Training by the weekend.
Not a big project: a delivery and a day’s building.
- 1
Order by 2pm
Today, online, in a few minutes.
- 2
Delivered tomorrow
Free next-working-day delivery to the kerbside on the UK mainland.
- 3
Built in a day
Numbered panels and every fixing. Most sizes take two people half a day to a day.
- 4
First session
Lay your flooring, bring your kit in and train in your cardio room.
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Cardio Room questions.
Is there enough headroom?
Apex Sheds are 2,285mm high inside under the ridge, down the middle of the building, and 1,757mm at the sides. That's why the layout puts the treadmill in the middle. Pressing a bar overhead needs more height than most garden buildings have, so measure your reach with your arms locked out first.
Is a Pent roof tall enough for a treadmill?
A Pent Shed is 1.76–1.89m inside, and a treadmill's deck lifts you about 0.2m, so on a Pent we swap the treadmill for an exercise bike. For a treadmill, choose Apex.
What flooring should I put down?
The floor is pressure-treated timber boards. Lay rubber gym flooring on top to protect the boards and spread the load of your kit. We don't publish a floor-load rating, so ask us about very heavy kit before you order.
Can I have lights and power?
Our buildings come without wiring, heating or insulation. If you'd like lights, sockets, a fan or a heater, have a qualified electrician fit them.
How quickly can I have it?
Order by 2pm for free next-working-day delivery to the UK mainland. It arrives flat-packed at the kerbside, with numbered panels, every fixing and a step-by-step guide. Most sizes take two people half a day to a day to build.
Do I need planning permission?
Usually not, if the building stays within the permitted-development limits for outbuildings. Check with your council if your home is listed or in a conservation area.
Other gyms
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Cardio Room · 8×17 Apex£2,228.09


















