What's included
The spec, in plain sight.
The price gap between garden rooms almost always hides in the spec. So here it is — what comes as standard, what's an optional upgrade, and how a proper insulated build compares to a flat-pack kit.
Included as standard
Every Vertex build gets this.
- Fully insulated walls, floor and roof (approx. 125mm envelope)
- EPDM single-piece rubber flat roof
- Composite or timber cladding, colour of your choice
- Thermally broken aluminium doors and windows (anthracite)
- Double-glazed, argon-filled sealed units
- Plastered and painted interior, ready to use
- Power circuit, sockets, LED lighting and consumer unit
- Prepared and levelled foundation base
- Guttering, fascias and external down-lights
Optional upgrades
Add exactly what you want.
- Doors & Windows
- Wider bi-fold spans, extra roof-lights, obscured glazing for privacy.
- Climate control
- Wall-mounted electric heating, air-conditioning, or an infrared panel.
- Interior finishes
- Engineered oak or vinyl flooring, feature walls, fitted storage and shelving.
- Technology
- Hard-wired data/ethernet, extra circuits, external CCTV or an EV-ready supply.
- Exterior
- Natural western red cedar cladding, a covered veranda, decking or a paved approach.
- Layout
- Internal partition for a WC or kitchenette, or a separate store room.
Like for like
It's not that we cost more — it's what the cheap option leaves out.
| Feature | Typical flat-pack kit | Vertex standard build | Vertex premium build |
|---|---|---|---|
| Insulation | Little or none | Full 125mm envelope | Full 125mm envelope |
| Roof | Felt, seamed | EPDM rubber, seamless | EPDM rubber, seamless |
| Doors / glazing | uPVC, single or basic double | Aluminium double-glazed | Aluminium bi-fold, double-glazed |
| Interior | Bare ply or OSB | Plastered & painted | Plastered, painted & fitted out |
| Foundation | You arrange it | Prepared & laid by us | Prepared & laid by us |
| Installed by | Flat-pack / subcontractors | Our directly-employed team | Our directly-employed team |
| Guarantee | Often none | 10-year structure | 10-year structure |
Comparison against a typical flat-pack garden building — no competitor named.
Spread the cost
A five-figure room, in monthly terms.
An illustration of how a build might break down monthly if financed over 12, 24 or 36 months. Figures are examples only, shown before interest, to make the numbers feel real — not a credit offer.
| Example build cost | Over 12 months | Over 24 months | Over 36 months |
|---|---|---|---|
| £18,000 | £1,538/mo | £788/mo | £537/mo |
| £25,000 | £2,136/mo | £1,094/mo | £746/mo |
| £32,000 | £2,735/mo | £1,401/mo | £955/mo |
Illustrative monthly figures, interest not included. Ask us for a precise, itemised quote.
Want it costed for your garden?
Every quote is detailed and itemised, with no hidden extras — the part clients mention most in their reviews.