Best aluminium greenhouses, compared
Aluminium-framed greenhouses from the UK retailers we track, ranked by value and specification with live prices. Aluminium is the maintenance-free default — the comparison shows glazing, base options and stated pane sizes side by side.
Independent comparison: we may earn a commission when you buy through links on this page. It never affects how we rank products — see our method.
Showing 1–19 of 19, ranked by our score.
| # | Product | Our rating | Best price | Retailers | Dimensions (cm) | Features |
|---|---|---|---|---|---|---|
| 1 | 63 | £206.99 | Aosom UK | W183 × L183 | sliding-dooradjustable-roof-ventgutter-system | |
| 2 | 60 | £252.99 | Aosom UK | W183 × L183 | slide-doorventilationground-stakes | |
| 3 | 59 | £267.99 | Aosom UK | W183 × L244 | rain-gutterswindowlockable-doorreinforced-poles | |
| 4 | 49 | £278.99 | Aosom UK | W182.88 × L304.8 | rain-gutterswindow | |
| 5 | 43 | £212.99 | Aosom UK | — | slide | |
| 6 | 42 | £226.99 | Aosom UK | — | slide | |
| 7 | 42 | £609.99 | Shedstore | W244 × L367 | walk-inaluminium-framerain-guttersroof-ventslockablemaintenance-free | |
| 8 |  6'x8' Halls Aluminium Frame Polycarbonate Greenhouse (1.92x2.56m) Halls · 4 options | 42 | £713.99 | Shedstore | W192.8 × L256.8 × H187.9 | sliding-dooropening-roof-ventguttering |
| 9 | 42 | £766.99 | Shedstore | W240 × L240 | walk-inlockable-doorslow-thresholduv-protectedtwin-wallbell-shaped | |
| 10 |  8'x12' Palram Canopia Bella Large Walk In Silver Aluminium Framed Greenhouse (2.4x3.6m) Palram Canopia · 3 options | 42 | £999.99 | Shedstore | W240 × L360 | walk-indouble-doorsroof-ventssteel-base |
| 11 | 42 | £233.99 | Aosom UK | W130 × L190 × H200 | slide | |
| 12 | 33 | £359.99 | Aosom UK | — | slide | |
| 13 | 33 | £209.99 | Aosom UK | W190 × L190 | ||
| 14 | 33 | £209.99 | Aosom UK | — | ||
| 15 | 32 | £236.99 | Aosom UK | W190 × L253 | ||
| 16 | 30 | £253.99 | Aosom UK | — | ||
| 17 | 30 | £258.99 | Aosom UK | — | ||
| 18 | 23 | £369.99 | Aosom UK | — | ||
| 19 | 18 | £449.99 | Aosom UK | — |
Why we rank it this way
Our default rating weights value for money and specification equally, then safety certification and how widely the product is stocked across retailers.
Weights: priceVsBand 30% · spec 30% · safetyCert 20% · availabilityBreadth 20% — full method on how we rank.
FAQs
- Do aluminium greenhouses need a base?
- Most are designed for a perimeter base kit (often sold separately — check the listing) on slabs or concrete. Skipping it twists the frame and cracks glazing; it's the most common assembly mistake.
- Powder-coated or mill (silver) aluminium?
- Structurally identical: powder-coating adds colour and a small premium. Mill finish weathers to a dull grey but lasts just as long — pick on looks and budget.