At a glance
There is only one way to make firewood burn well: dry it out properly. That sounds obvious until you realise that most people who own a log store have built or bought one that works against that goal. A fully enclosed shed. A tarpaulin pulled tight over the whole pile. Wood stacked on soil. Each of these traps moisture instead of releasing it, and all the time you spent cutting or stacking does nothing to improve the burn.
A log store does two specific things at once: it keeps rain off the top while letting air move freely through the sides and underneath. Get both right and wood that arrives wet from the timber yard will be ready to burn in 12-24 months, depending on species. Get either one wrong and it can sit there for years and never dry properly. This guide covers building a standard 1 x 2 metre timber log store. It will last 15-20 years with minimal maintenance, it is sized right for most households, and it is designed to do the job it is actually supposed to do.
Why the design of your log store determines whether your wood seasons at all
Wood is hygroscopic, meaning it absorbs and releases moisture based on what surrounds it. Freshly cut timber contains 50-60% moisture by weight. Before it burns efficiently, that has to come down to 20% or below. In England, under the Wood Burning in Smoke Control Areas Regulations that came into force in May 2021, wood sold for burning in volumes under two cubic metres must meet a moisture content below 20%. If you are buying unseasoned wood and drying it yourself, keeping it at that level once it gets there is your responsibility.
The two enemies of seasoning are rain from above and damp from below. A good log store handles both. Open sides handle the rest. They let the wind do the work of carrying moisture away from the pile. A sealed building, whether that is a shed or a garage, traps the humidity that rises from drying wood. Unless the ventilation is exceptional, it makes things worse rather than better.
Planning permission and where to site it
A log store almost certainly falls under Permitted Development rights, which means no planning application needed. The rules that apply are the same as for any garden outbuilding: the structure must not be forward of the house’s principal elevation, the eaves height must not exceed 2.5 metres, and the total of all outbuildings must not cover more than 50% of the land surrounding the original house. If your store is within two metres of a boundary, the maximum height is 2.5 metres. For most straightforward log stores well under a metre in eaves height, none of this is remotely close to being triggered.
Listed buildings and properties in designated areas such as conservation areas and Areas of Outstanding Natural Beauty may have Permitted Development rights restricted or removed. Check with your local planning authority before building if either applies to you.
For siting, choose somewhere you can easily get a barrow or a trolley from the store to your door. In winter, carrying armfuls of logs through a dark, wet garden further than you need to gets old quickly. Avoid placing the store directly against a wall or fence. Leave at least 10cm for airflow and to stop damp transferring between surfaces. If it must go against a wall, the roof slope should run toward the front so rain drains away from the structure rather than behind it.
What you’ll need
This build uses pressure-treated softwood throughout. Untreated timber will start showing rot within a few years in UK conditions. Pressure treatment forces preservatives deep into the wood’s cellular structure, giving it a realistic 20-year lifespan outdoors. When you cut treated timber, seal the cut ends with end-grain wood preservative before assembly, since the factory treatment only protects the outer surface.
The foundation – keeping the wood off the ground
Ground contact ruins firewood. Soil holds moisture at all times of year, and any wood resting on it absorbs it continuously. This is the most common reason log stores fail to dry wood properly. The base looks solid but the bottom layer is permanently damp, and the moisture wicks up from there.
Concrete decking blocks are the simplest and most effective foundation for this kind of build. They sit low in the ground and lift the entire structure clear of the soil. If your log store is going on an existing paved or concrete surface, you can skip steps 1 and 2 entirely and build straight off the paving.
Building the frame, walls, and floor
The floor frame sits on top of the base joists. It must be square before you do anything else. A frame that is not square will show up in every part of the build that follows, and there is no way to correct it later without taking things apart.
Tip: Pre-drill every screw hole before driving. Pressure-treated timber splits along the grain more readily than untreated wood, particularly near board ends. A 3mm pilot hole takes seconds and prevents a lot of frustration.
The roof – pitch, overhang, and material
The roof has one job: get rain away from the stack. That means a slope, and that slope has to run in the right direction. If your store is freestanding, the slope runs toward the front. Rain drains forward and away from the stack. If the store sits against a wall, the same rule applies: roof sloping toward the front, not back toward the wall behind.
Corrugated metal sheet is the standard choice for this kind of build. It is durable, lightweight, and needs no maintenance beyond clearing leaves off it in autumn. Corrugated polycarbonate works equally well and is marginally easier to cut. Avoid roofing felt on a structure like this. It deteriorates quickly and is difficult to replace without dismantling part of the roof frame.
Against a wall: Leave a minimum 10cm gap between the back of the store and the wall or fence. This gap is not optional. It prevents damp from the wall transferring into the wood, and it gives you the airflow the back of the stack needs.
Stacking and seasoning – the part most people get wrong
Building the store right is only half the job. How you fill it determines whether it actually works. The aim is to let air move through the pile, not just around it, which means loose stacking, not tight. Logs packed as efficiently as possible are the enemy of good seasoning. The gaps between an irregular, loosely stacked pile are exactly where the air needs to go.
How long wood needs to season depends entirely on the species. Split wood seasons significantly faster than rounds, because more surface area is exposed. Smaller splits dry faster than large ones. If you are starting from green timber, cut to length and split before stacking rather than after. It makes a measurable difference to the timeline.
Ready to Burn: Wood bought with a Ready to Burn certification label has been tested below 20% moisture content, which is the legal threshold in England for wood sold in volumes under two cubic metres. Even certified wood reabsorbs moisture if you store it badly. A log store that does its job correctly keeps it there.
How much wood do you actually need to store?
The size of your log store should match how you actually use your stove, not how large a structure you can fit against the fence. Building something too large for your needs means part of the store is always either empty or filled with wood that has been sitting there so long it starts losing its heating value. After about five years, logs begin to deteriorate. Building too small means running short in February, which is the most expensive time to buy.
The log store in this guide is 1 x 2 metres and holds approximately 1.5 to 2 cubic metres depending on how tightly you stack. That suits most households running a stove as supplementary heating on evenings and weekends. If you burn more than that, build wider or plan a second bay later. The foundation and frame design scales directly. Use the same method and just extend the dimensions.
One last thing worth knowing about storage size: make sure a delivery vehicle can get close enough to load the store directly. Carrying armfuls of logs from a pile in the drive to a store at the back of the garden is not a five-minute job when you are talking about a tonne of wood. Siting the store for practical access matters as much as siting it for the right aspect.
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