Total Sheds
Technical Installation · 6 min read
The full two-person assembly sequence for a panel-built pent BBQ shed — base checks, wall order, the single-slope roof — plus the smoke, siting and safety rules that matter when there's a grill involved.
Two People, One Dry Day
A pent BBQ shed is two builds in one: a straightforward panel shed with the friendliest roof we make, and an outdoor cooking spot that needs siting like a cook. Here is the full two-person sequence.
We've been hand-building garden buildings in our West Midlands workshop since 1995, and when a first-time builder asks where to start, we point them at a pent: one slope, no ridge, no apex geometry to wrestle. When that pent is a BBQ shed, you get a serving hatch and a dry base for the cook's kit into the bargain.
Everything below applies to any panel-built pent shed, ours or another maker's. We've left out panel counts, fixing sizes and model-specific steps deliberately — your assembly manual is the authority on those, and one ships with every building we make. For the generic panel sequence in depth, start with our flat-pack assembly guide; this article adds the pent and BBQ layers on top.
Stand where the BBQ will live and think about where smoke goes on an ordinary breezy evening — away from your kitchen window, the neighbours' washing line, and the doorway you'll serve through.
A clear gap around the building lets air move, lets timber dry after rain, and lets you reach every panel for maintenance. Don't tuck it hard against a fence.
The cooking area wants slabs, concrete or stone underfoot — never decking, bark or dry grass. Dropped coals and hot fat should land on something that shrugs them off.
Never run a lit or smouldering BBQ inside an enclosed, unventilated building — carbon monoxide is invisible, odourless and deadly. The shed shelters the cook, the prep and the kit; the fire stays in open air.
If any check fails, stop and fix the base before the build — nearly every assembly problem we're asked to untangle traces back here. Our base preparation guide covers slabs and concrete; if you're going the timber-frame route, the timber base installation guide walks it end to end.
Lay the panels flat on clean ground and check them against the parts list in your manual. A pent's walls are different heights by design, so identify which panel is which now, on the ground. Check for transit knocks before you fix anything — a damaged panel is easy to replace and miserable to build in.
A pent sheds all its water to the low side, so make sure the low edge points somewhere sensible — not over the door, the hatch, or where the cook will stand. Position the floor and measure both diagonals; when they match, everything above keys off it.
The back panel goes up first, flush to the floor's edge. One of you holds it plumb while the other fixes through the framing.
Offer each side panel to the back wall and fix through the corner framing — snug, not tight. If a firm push can still shift a panel a few millimetres, that's exactly right; you'll want that give when you square up.
The front is the heaviest panel — it carries the door, and on a BBQ shed often the serving-hatch opening too. Two people, no heroics: walk it into place, fix to both side panels, snug like the rest.
Measure the diagonals across the walls and nudge until they match and the door swings sweetly. Only now go round and tighten every fixing. Tightening before squaring is the most common assembly mistake — a racked building fights you at roof, door and hatch.
A pent deck is one flat plane — no ridge, no valleys — the friendliest roof in the range. Fix the deck as your manual shows, drilling pilot holes before screwing near any board end: end grain splits easily, and a split board at a roof edge is an invitation to water.
One plane means one covering, with no ridge to detail. Felt does the job; EPDM rubber is the long-life alternative — a one-piece membrane with a life expectancy of around 50 years, and no joins to make on a pent. Our <a href="/how-to-install-epdm">EPDM fitting guide</a> covers the membrane step by step; <a href="/knowledge/felt-vs-epdm">felt vs EPDM</a> weighs the two honestly. Whichever you fit: never roof in wind.
Final adjustments come last, once the building is square and the roof's weight has settled the frame. The door should close with a click, not a shove; the hatch should open and latch cleanly. Check a fold-down serving shelf with a spirit level — drinks have opinions about slopes.
Run a silicone bead around windows and the hatch surround, then dab preservative on every cut and drill hole. Our framing arrives tanalised (pressure-treated), but a fresh cut exposes untreated timber — treating it keeps the 15-year anti-rot guarantee exactly as written.
None of that is more than ten minutes with a driver and the kettle on. Our aftercare guide covers the year-round jobs in full — and all of it holds whether your pent came from our workshop or someone else's.
No — and we won't soften it. A lit or smouldering BBQ inside an enclosed, unventilated building produces carbon monoxide — invisible, odourless and potentially lethal. An open hatch is a serving counter, not ventilation. Cook in open air on the hard standing, and use the shed for prep, serving and shelter.
In one honest way, yes: the roof is a single flat plane, so there's no ridge to align. The wall sequence is identical. The one extra thing to mind is that a pent's walls are different heights — identify each panel on the ground before you start.
There's no magic number, and we won't invent one. The practical test: dropped coals and hot fat should land on slab or stone, never timber or grass, and the cook should manage a full step back from a flare-up without leaving the hard area. If in doubt, lay another row of slabs.
Yes to both. Delivery is free across the UK mainland, and an assembly manual ships with every building we make. If a panel comes off the van with a transit knock, photograph it and get in touch before you build it in — we made it, so replacing it is straightforward.
Design your pent BBQ shed in the Build Studio — size, doors, hatch placement — hand-built in our West Midlands workshop since 1995 and delivered free across the UK mainland.
Design yours in the Build StudioReady to put it into practice? Every building is made in our West Midlands workshop with free mainland delivery.
Browse buildings →