Total Sheds
In stock — FREE UK mainland delivery in 2–3 working days
Shown as a true-to-spec render. See real Total Sheds buildings
Size
18x4 ft
Material
Timber
Timber
FSC certified
Half price — £434 £217. That's our cost price — the exact rubber sheet and adhesive we're charged, delivered to your door. Less than you could buy a rubber roof for yourself.
Total price
£1,388£1,850
You're saving £463
Seen it cheaper? We'll match it
Introducing the Total Sheds 18 X 4 SECURITY PENT SHED, your UK manufactured solution for secure storage in the garden or outdoor space. Crafted from premium FSC certified pressure-treated tanalised Swedish red-wood, this garden building provides a durable and reliable shelter for tools, lawnmowers, bikes, and equipment.
Structure
Roof & weatherproofing
Dimensions
Treatment & warranty
Fittings & delivery
Sizes are nominal footprints in feet. External dimensions can differ slightly from the headline size because of cladding overhang and panel construction — the internal heights listed are the real usable measurements.
Timber is measured before machining — that "sawn" size is the nominal figure. Planing it smooth and cutting the tongue-and-groove profile removes a few millimetres, so a 16mm nominal board finishes at around 12mm, and a 24mm nominal floor board finishes at around 18mm.
Every timber manufacturer works this way — but most only quote the bigger nominal number. We publish both, so you can compare buildings on the wood you actually get, not the wood it started as.
Ordered size
18' × 4'
W × D (feet)
External size
17.50' × 3.87'
W × D (feet)
The external size is what your base must fit — not the ordered size.
Designed for DIY assembly, with its own step-by-step guide — printed in the box, and free to read right now before you buy.
Doors and windows exactly where you want them — the Build Studio prices any size instantly.
Open the Build StudioSame build, same spec — pick the footprint that fits.
