Total Sheds
In stock — FREE UK mainland delivery in 2–3 days
Shown as a true-to-spec render. See real Total Sheds buildings
Size
18x5 ft
Material
Timber
Timber
FSC certified
The exact rubber sheet and adhesive we're charged for, delivered to your door — cut to size for your roof.
Total price
£2,180.69
Pay your way at checkout — card, Apple Pay, Google Pay, PayPal or Klarna.
Seen it cheaper? We'll match it
We're at Glee this week — Birmingham NEC, 8–10 September 2026, stand 19B40-C41. It's a trade show, but you're very welcome if you'd like to buy a ticket and visit us.
Introducing the Total Sheds 18 X 5 PENT SUMMER HOUSE (FULL HEIGHT WINDOW), your premium UK manufactured garden retreat. Crafted from FSC certified pressure-treated tanalised Swedish red-wood, this summerhouse offers a durable, weather-resistant outdoor room for relaxation, entertaining, or a quiet retreat.
Ordered size
18' × 5'
W × D (feet)
External size
17.50' × 4.81'
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.
The Apex Summer House
Pent shed — how it goes together
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.
Never treat a shed again
The composite 18x5 — same footprint, zero upkeep, from £3,415.49 (vs standard spec).
See the composite version →
Not sure? Feel the cladding first — free samplesStructure
Cladding
FrameworkRoof boardsRoof & 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.
