Quick answer
A heavy-duty shed has a thicker frame, thicker cladding and a sturdier floor than a standard shed, so it stays rigid, copes with exposed sites and takes heavier use. Compare the frame section in millimetres, the cladding thickness and the floor, not just the name.
"Heavy duty" is used loosely across the industry, so it pays to look at the actual numbers. Our product pages list them, so you can compare like for like. Here is what to look at and which of our sheds have the stronger builds. For the timber side of things in more depth, see what timber is best for sheds.
Who needs a heavy-duty shed
- Exposed or windy gardens.
- Workshops, heavy tools and machinery. See also workshop sheds.
- Larger sizes, where a light frame can flex.
- Anyone who wants the shed to last with less fuss.
What to compare
- Frame: for comparison, the Power Overlap range uses a 28x28mm frame and the standard Power range 44x28mm. Heavier builds include 44x44mm (Shedlands Heavy Duty, Sovereign Cumbria and Surrey), 3"x2" (Suresheds Wharfedale and Ingleton Lodge) and 58x44mm (Power Premium).
- Cladding: 12mm is standard on many ranges. Shedlands Premier is 18mm, and Suresheds offers 12mm, 16mm or 20mm.
- Floor: Sovereign offers an 18mm heavy-duty floor upgrade, and Shedlands Premier cladding includes 18mm floorboards.
- Roof: heavy-duty felt, or EPDM rubber upgrades on several ranges.
- Treatment: pressure-treated (tanalised) timber resists rot. Check what each range asks you to re-treat and when.
- Not timber? Steel and concrete are heavy duty in a different way. See timber vs metal vs concrete.
- Base: a heavier building needs a solid, level base. See sheds with a base.
Heavy-duty sheds we sell
- Shedlands – Heavy Duty 50x50mm Framed Building: 44x44mm finished frame (50x50mm sawn) with diagonal cross bracing, apex or pent.
- Power Sheds – Power Premium Apex Shed: 58x44mm pressure-treated frame, doubled to 58x88mm in key areas.
- Power Sheds – Power Premium Pent Shed: the same 58x44mm pressure-treated frame with a pent roof.
- Sovereign – The Cumbria Robust Apex Shed: 44x44mm round-corner framing, built for heavier-duty use.
- Sovereign – The Surrey Premium Apex Shed: premium apex on 44x44mm framing.
- Suresheds – Wharfedale Workshop: 3"x2" frame and 1500mm double doors, up to 24x12.
- Suresheds – Ingleton Lodge: 3"x2" frame, 20mm cladding as standard and a rubber roof.
- Lifelong Apex Shed - 10ft Wide: PVC-coated galvanised steel cladding on a rigid box steel frame.
- Beeston Concrete Store Shed - Apex Style: concrete panels for strong, low-maintenance storage.
Before you order
- Measure your space and leave room to walk round the building. Our shed sizes guide explains nominal and actual sizes.
- Every timber building needs a firm, level base. See choosing and preparing a base.
- Check the height rules with our planning permission checker, especially if you are close to a boundary.
- Want a price for a building plus extras in one go? Use Build Your Quote.
- Browse the full range in garden sheds.
Common questions
What makes a shed heavy duty?
Mainly a thicker frame, thicker cladding and a stronger floor and roof. Compare the frame size in millimetres on each product page rather than relying on the name.
Is a steel shed stronger than a wooden one?
They are strong in different ways. Steel needs no treatment and resists rot; heavy-duty timber is easier to customise and fit out. Our comparison guide covers both.
Put a hand on the frame
Our Display Site at Buzzards Valley, Tamworth, Staffordshire B78 3EQ is open 7 days a week. You can drop by any day to walk round the buildings, or book a time. We are not on site every day and what is on show changes, so call 01543 398778 if you would like someone there or want to see something in particular. You can also WhatsApp us a photo of your garden and we will help you choose. More help in our Guides & Advice.
Sizes, specifications and options vary by model, so always check the product page before you order.