If you are looking at sheds in Essex and trying to work out whether a heavy duty or standard shed is the right choice, you are not alone. It is one of the most common questions we get asked. The honest answer is that both options are well built, but they are designed for different jobs. Understanding what actually differs between them will save you money if you do not need the upgrade, and save you regret if you do.
What Makes a Standard Shed “Standard”?
A standard shed is not a cheap shed. It is a well-made timber garden building designed for everyday outdoor storage. At Poulton Portables, standard sheds use ex 25mm x 50mm framing with ex 12mm shiplap cladding. That is a solid specification for general use, including storing garden tools, bikes, lawnmowers, and similar kit.
The floor uses ex 16mm tongue and groove boarding on ex 38 x 50mm joists, and the roof is covered with good quality roofing felt. The door is a framed, ledged, and braced design, and windows come with weather bars to keep water out. For most households, this is all the shed they will ever need.
How Does a Heavy Duty Shed Differ?
The heavy duty range is built to a noticeably higher specification throughout. The differences are not cosmetic. They go right through the structure.
| Feature | Standard Shed | Heavy Duty Shed |
|---|---|---|
| Frame thickness | ex 25mm x 50mm | ex 38mm x 75mm (double at corners) |
| Cladding | ex 12mm shiplap | ex 19mm x 125mm TGV shiplap |
| Floor boarding | ex 16mm T&G | ex 22mm T&G |
| Floor joists | ex 38 x 50mm | ex 38 x 50mm |
| Roof boarding | Standard felt | ex 16mm TGV on ex 38 x 75mm purlins |
| Roofing felt | Standard | Heavy duty Glastex SBS green mineral felt |
| Larger buildings | Standard purlins | Ridge bars and roof trusses on larger sizes |
The jump from 25mm to 38mm framing is significant. It makes the structure much more resistant to frame racking, which is the gradual twisting and shifting that can happen to a building over years of seasonal timber movement. Thicker cladding also reduces the risk of moisture ingress through the walls, which matters a great deal in a wet Essex winter.
You can see the full details on the heavy duty apex shed specification page and the heavy duty pent shed specification page if you want to compare the numbers side by side.
What About Tanalised Timber?
Tanalised timber is softwood that has been pressure treated with preservative, forcing it deep into the wood cells rather than just coating the surface. This makes it far more resistant to rot and insect attack over time. The Timber Decking and Cladding Association explains the Use Class system for timber preservation in detail if you want to understand how treatment levels are rated for different outdoor uses.
Whether you go standard or heavy duty, Poulton Portables builds with good quality timber and applies a coat of oil-based wood stain as standard. If you want tanalised framing or a more thorough treatment as part of your build, it is worth discussing at the enquiry stage.
When Is a Heavy Duty Shed Worth the Extra Cost?
Think about what you are actually going to use the shed for, not just what you plan to use it for today.
A heavy duty shed makes clear sense if you are using it as a workshop. You will be in and out of it regularly, probably with heavier items, and you need a structure that holds up to daily use over many years. The stronger frame also makes it easier to fit internal shelving and workbenches securely.
It also makes sense if you are storing anything valuable, such as power tools, a motorcycle, or garden machinery. The heavier cladding and better-quality roofing felt give you more protection from the weather and a more secure envelope overall.
If you want to use the shed all year round, perhaps as a hobby space, a home gym, or a place to work from during good weather, a heavy duty shed is the better base to line and insulate. The thicker walls mean less heat loss and a more stable internal temperature.
When Is a Standard Shed Perfectly Fine?
For general garden storage, a standard shed is an excellent choice. If you are keeping a lawnmower, some tools, a few bags of compost, and a bicycle, you do not need the heavier frame. A standard shed built to Poulton Portables’ specification will serve you well for many years with basic maintenance.
Standard sheds are also a sensible choice if you have a tighter budget but still want a quality UK-made timber building rather than a flat-pack alternative. The difference in build quality between a good standard shed and what you get from a garden centre flat pack is substantial.
The Bottom Line
The choice between a standard and heavy duty shed comes down to use, not just size. For everyday storage in a domestic garden, a standard shed does the job well. For workshop use, year-round access, or storing valuable contents, the heavier specification pays for itself in longevity and reliability.
If you are not sure which suits your needs, get in touch and we can talk it through. Poulton Portables has been building timber garden buildings in Essex since 1951, and we are happy to help you find the right fit.