Pergola vs Conservatory vs Garden Room — Which Is Best for UK Homes?
The Problem with Conservatories
Conservatories were the default UK garden extension for decades. But they have a well-known fatal flaw: they overheat in summer and freeze in winter. The glass roof traps solar heat, turning the space into a greenhouse from May to September. In winter, even with heating, the glass radiates cold and running costs spike.
The result? Most UK conservatories are underused for 6+ months of the year. Expensive space that sits empty.
Why the PergoEnvision Changes Everything
The PergoEnvision glass garden room solves the conservatory’s fundamental problems. It comes with sliding glass doors as standard on all open sides — 3 sides wall-mounted, 4 sides free-standing — giving you a fully enclosed space at the quoted price. No extras to add.
Overheating solved: Open the motorised louvres and hot air escapes instantly. A conservatory can’t do this — its roof is fixed glass.
Open-air living: Slide back the glass walls and you’re outside. A conservatory is always an indoor room.
No planning permission: Most pergola installations don’t require planning permission. Conservatories sometimes do, orangeries almost always do.
No building regulations: Pergolas do not require building regulation approval. Conservatories over 30m² and all orangeries do.
Full Comparison
| Factor | Conservatory | Orangery | Timber Garden Room | PergoEnvision |
|---|---|---|---|---|
| Price | £10k–£30k | £25k–£60k | £8k–£25k | £13k–£34k |
| Glass doors included? | Fixed glass only | Fixed glass only | No | Yes — sliding, all sides |
| Planning permission | Sometimes | Usually | Sometimes | Rarely |
| Building regs | If >30m² | Yes | If >15m² | No |
| Install time | 4–8 weeks | 8–16 weeks | 2–4 weeks | 2–3 days |
| Summer overheating | Yes — major issue | Less, but yes | Less, but stuffy | No — louvres vent heat |
| Open-air capability | No | No | No (doors only) | Yes — fully opens |
| Maintenance | Medium | Medium | High (timber treatment) | Low — aluminium |
| Lifespan | 15–20 years | 30+ years | 10–20 years | 25+ years |
Who Should Buy What?
✓ Buy a PergoEnvision If...
- You want indoor/outdoor flexibility
- You want glass doors without paying extra
- Summer overheating is a concern
- You want to avoid planning hassle
- Speed of installation matters
- Budget is £13k–£34k
✗ Consider a Conservatory/Orangery If...
- You need a fully insulated, permanently heated room
- Budget is very high (£30k+)
- Traditional aesthetic is essential
- You’re willing to wait 2–4 months
PergoEnvision — Glass Doors Included
The smarter alternative to a conservatory