Your Guide to Garden Shed Installation
Buying a new shed is exciting, but many customers naturally wonder what actually happens on installation day. How long will it take? What needs to be prepared beforehand? And will access to the garden cause any problems?
The good news is that when you choose garden sheds with installation, most of the hard work is taken care of. Experienced installers handle the delivery and assembly, ensuring your building is positioned correctly and built to last.
That said, a smooth garden shed installation still relies on a few important things being ready in advance, particularly the base and access to the garden.
At Elfords, every shed is made to order in our Portsmouth workshop and installed by the same experienced team who know the buildings inside out. That means the process is straightforward, well organised and designed to avoid surprises on the day.
In this guide, we’ll explain exactly what to expect before, during and after your shed installation, so you can prepare with confidence.
Before installation day: preparing for your new shed
A smooth garden shed installation starts well before the team arrives. When the basics are in place, the day itself is usually straightforward and surprisingly quick.
Once your order is confirmed and the deposit is paid, you’ll be given a delivery date. From there, it’s worth taking a few minutes to think about the practical details — particularly the route into your garden and whether there are any obstacles the installers should know about.
Ahead of the date you’ve been given, we ask that you clear the area around where the new shed will be located. That means removing tools, pots, garden furniture or anything else that might get in the way while the building is assembled.
Most importantly, the base should be properly prepared and level before installation day arrives. A shed will only ever perform as well as the surface it sits on. If the base is uneven or unstable, doors may stick, floors can twist and the building may not settle correctly over time.
💡 If anything about access or the base looks unusual, the Elfords team will arrange a quick site visit beforehand to check everything is workable and avoid surprises on the day.
Access routes: how the installation team gets the shed into your garden
One of the most common questions we’re asked is how the shed actually gets from the street into the garden. In most cases, it’s simpler than people expect.
Typical access routes include side paths, garages or occasionally even through the house if there’s no other option.
Because Elfords timber buildings are assembled on site, the individual panels can usually be carried through spaces that are much narrower than the finished shed itself.
That said, it’s helpful to think about the route beforehand. Tight corners, narrow gates, steps, slopes or obstacles such as walls and fences can all affect how easily materials can be moved into position.
In most situations, the installation team can work around awkward access without difficulty. The key is simply letting us know in advance if anything looks challenging. If needed, we can visit beforehand to check the route and make sure everything is workable.
💡 Insider tip: Measure the narrowest point between the street and your garden — such as a gate or path — and mention it when ordering. It helps the team plan ahead and ensures installation day runs smoothly.
Why a level base matters for garden shed installation
If there’s one thing that makes the biggest difference to a successful garden shed installation, it’s the base. A garden shed will only ever perform as well as the surface it sits on, so getting this right from the start is essential.
The best bases are firm, level and built to the correct size for the building. Common options include a concrete pad, level paving slabs or a properly prepared shingle base.
Whatever material you choose, the key is ensuring the surface is stable and completely flat before installation day.
A well-prepared base helps keep the building square and stable over time. Without it, sheds can twist slightly as they settle, which may cause doors to stick, floors to shift and panels to come under unnecessary strain. A solid base protects the structure and helps your shed last for many years.
You may also hear the term loose bearers. These are simple timber supports placed beneath the shed floor to lift the building slightly off the ground. They improve airflow underneath the shed and help protect the base and flooring from moisture.
💡 Insider tip: If the base isn’t level when the team arrives, installation may need to be delayed until it’s corrected. Taking the time to prepare it properly beforehand helps everything run smoothly on the day.
What happens during garden shed installation?
Once the team arrives, the installation process is usually very straightforward. Because Elfords buildings are delivered in prepared sections and assembled on site, everything is designed to come together efficiently and correctly.
Step 1 – Delivery and unloading
The team arrives with the shed components and carefully carries them through to the installation area using the agreed access route.
Step 2 – Positioning the base bearers
Timber bearers are sometimes placed on the base to support the shed floor and allow airflow underneath the building.
Step 3 – Building the structure
The wall panels are assembled and secured together, forming the main structure of the shed.
Step 4 – Roof installation and finishing
The roof is fitted, followed by roofing felt, doors and windows. At this stage the building really starts to take shape.
Step 5 – Final checks
The team ensures doors open and close properly, the structure is square and secure, and everything is finished to the expected standard.
One of the biggest advantages of garden sheds with installation is that everything is handled by experienced installers who know the buildings inside out. Most sheds can be fully assembled in just a few hours — far quicker and easier than tackling the job yourself.
How long does wooden shed installation take?
One of the most common questions customers ask about garden shed installation is how long the process will take. In most cases, it’s much quicker than people expect.
The exact time depends on a few factors, including the size of the shed, the complexity of the design, access to the garden and, occasionally, the weather. However, because Elfords garden buildings are delivered in prepared sections and assembled by experienced installers, the process is efficient and well organised.
Smaller sheds can often be installed in just a few hours once the team arrives on site.
Medium-sized buildings may take a little longer as there are more panels, windows or doors to fit.
Larger structures such as workshops naturally take additional time, particularly when extra space, heavier framing or multiple doors are involved.
For example, compact designs such as a 12×4 garden shed can usually be assembled fairly quickly, while larger buildings like a 20×12 shed require more time during construction.
In both cases, the installation follows the same careful process to ensure the building is square, secure and built to last.
💡 Insider tip: If the base is ready and access is clear, installation day is usually much faster than people expect. Most customers are surprised how quickly their new shed takes shape.
What happens after shed installation?
Once the shed is fully assembled, the team will carry out a final check before leaving.
This includes making sure the structure is square and secure, that doors open and close properly, and that everything has been installed to the expected standard.
You’ll have a chance to look over the building with the installers and ask any questions before they go. At this stage, your new shed is ready to use — but a little aftercare will help keep it performing well for years to come.
The most important step is protecting the timber. If your building hasn’t already been treated, applying a good-quality preservative soon after installation helps protect against weathering, mould and moisture.
It’s also worth checking that water can drain away freely around the base and that airflow underneath the shed remains clear.
💡 Insider tip: Apply your first timber treatment as soon as possible after installation. It gives the wood its first layer of protection and helps keep your shed looking its best for longer.
Common questions about garden shed installation
Do I need to be home for the installation?
It’s helpful if someone is available when the team arrives, especially to confirm the exact shed position and answer any last-minute questions. Once installation begins, however, there’s usually no need for constant supervision. Many customers simply check in at the start and again once the building is complete.
What if the weather is bad?
Most installations can go ahead in typical British weather, but very strong winds or severe conditions can make it unsafe to assemble the shed roof or handle large panels. If the weather is unsuitable, the team will simply rearrange installation for the next available safe date.
What if the base isn’t level?
If the base isn’t level when the installers arrive, the shed cannot be assembled properly. An uneven surface can cause doors to stick and the structure to twist over time. In some cases the team may need to postpone installation until the base is corrected, so it’s always best to double-check it beforehand.
Will the installers remove packaging or waste?
Yes. The installation team will take away any packaging or leftover materials from the build itself, leaving the area tidy once the shed is complete.
Will you take my old shed away?
Yes. As a Registered Waste Carrier, Elfords can dismantle and dispose of your old shed safely and responsibly. This service is available for an additional charge, and the exact cost depends on the size of the building and access to your garden. Please inform us when you place your order for a new shed if you need us to take your old shed away.
Why professional garden shed installation makes a difference
Installing a shed may look straightforward, but getting everything properly aligned and secured takes experience.
One of the biggest advantages of choosing garden sheds with installation included is that the structure is assembled by professionals who understand exactly how the building should fit together.
Correct alignment ensures doors open smoothly, panels sit squarely and the shed settles evenly on the base. It also makes the whole process far quicker than tackling a DIY installation, particularly with larger buildings or more complex layouts.
Professional installation also protects the long-term durability of the shed. When the structure is assembled correctly from the start, it helps prevent twisting, movement and unnecessary strain on the timber over time.
At Elfords, every building is made to order in our Portsmouth workshop and installed by the same experienced team who build them. With more than 40 years of craftsmanship behind us, that joined-up approach helps ensure every shed is fitted properly and built to last.
Professional garden shed installation by Elfords: Trusted Portsmouth wide since 1982
With the right preparation, installation day should be straightforward and stress-free.
Once access is clear, the base is properly prepared and the area is ready, the rest is handled by experienced installers who know exactly how the building should come together.
In most cases, the entire process takes just a few hours, and by the end of the day you’ll have a solid, professionally assembled shed ready to use. Simple shed aftercare — such as applying timber treatment and keeping the base well drained — will help protect your building for years to come.
If you’re planning a garden shed installation or looking for garden sheds with installation included, the Elfords team is always happy to help.
You’re welcome to visit our Hilsea showroom to see our range of garden buildings in person, or get in touch to talk through your plans.