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Strip out the old, base-check, rebuild with modern glazing and a warm or solid roof.
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Top tips
Hiring a conservatories, without the regret.
Four moves that separate a smooth job from a nightmare.
Hidden house wall damage
Old conservatory flashing has often left water damage on the house wall. Allow budget for repointing or rendering repair.
Slab damage
Old foundations may not be reusable. Cheap quotes assume they are; inspect carefully.
Asbestos in old conservatories
Pre-1990 conservatories occasionally have asbestos cement panels — get a survey if uncertain.
Polycarbonate disposal
Many tip operators won't accept polycarbonate — specialist disposal needed.
Costs & timeline
Know what it costs. Know when it ends.
Indicative UK ranges and a typical week-by-week schedule.
Cost range
By job type
Inc. VAT · 2026
Source: NMT quotes
Source: NMT quotes
Small lean-to removal1–2 day project
£800–£1.5k
Medium conservatory removal3–4 days
£1.2k–£2.5k
Large P-shape removal4–6 days
£2k–£3.5k
Skip hire (8-yard)For brick/concrete waste
£250–£450
Polycarbonate disposalSpecialist recycling needed
£50–£250
Make-good of house wallIf flashing/seal needs work
£200–£800
!
Quote spread is typically ± 18% — always get 3 quotes.
Timeline
Mid-size conservatory · week by week
Typical
5 phases · 5 wk
5 phases · 5 wk
W1
W2
W3
W4
W5
Foundations + dwarf wall
Frame + glazing
Roof + ridge
Electrics + flooring
Snags + handover
!
Schedule slips on dependencies — pad each phase by 10–20% for real-world delays.
At a glance
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Conservatories explained
Old conservatories — typically 25–30 years old, with polycarbonate roofs, single-glazed walls, and yellowing uPVC frames — reach end of life. Removal, disposal and replacement is a common UK project. Expect to pay £800–£3,500 for removal alone, plus the cost of any replacement.
What Does the Work Involve?
The contractor strips the old conservatory in reverse-order: roof glass or polycarbonate first, then frames, then dwarf wall. Concrete slab and foundations are usually retained if they're in good condition (saves £2,500+ on rebuild). DPC and DPM are inspected and replaced if damaged. uPVC frames are recycled; polycarbonate is recycled where facilities exist; concrete and brick rubble are crushed and reused as hardcore.
Typical Costs
| Item | Low (£) | High (£) | Notes |
|---|---|---|---|
| Small lean-to removal | 800 | 1,500 | 1–2 day project |
| Medium conservatory removal | 1,200 | 2,500 | 3–4 days |
| Large P-shape removal | 2,000 | 3,500 | 4–6 days |
| Skip hire (8-yard) | 250 | 450 | For brick/concrete waste |
| uPVC recycling | Free | 50 | Most recycling centres take |
| Polycarbonate disposal | 50 | 250 | Specialist recycling needed |
| Make-good of house wall | 200 | 800 | If flashing/seal needs work |
How Long Does It Take?
Small lean-to: 1–2 days. Medium conservatory: 3–4 days. Large or P-shape: 4–6 days. Foundations and slab inspection: half a day extra.
DIY or Professional?
Professional. The roof needs to come down safely (large glass panels are heavy and fragile). Working at height and disposal regulations apply.
Choosing the Right Tradesperson
A demolition contractor or conservatory specialist. The conservatory installer doing the replacement often handles removal too as a package. Ask for itemised quote for removal and replacement separately.
UK Regulations
Waste regulations apply — registered waste carrier needed. Listed buildings need consent before any demolition. Removal of a structurally-integral element (e.g. a conservatory used as a kitchen-extension) needs Building Regs notification for the make-good.
Common Problems
- Hidden house wall damage: Old conservatory flashing has often left water damage on the house wall. Allow budget for repointing or rendering repair.
- Slab damage: Old foundations may not be reusable. Cheap quotes assume they are; inspect carefully.
- Asbestos in old conservatories: Pre-1990 conservatories occasionally have asbestos cement panels — get a survey if uncertain.
- Polycarbonate disposal: Many tip operators won't accept polycarbonate — specialist disposal needed.
Frequently Asked Questions
Can I reuse the foundations?
Often yes — if they were properly built (600mm minimum depth, sound concrete). Inspect for cracking or settlement before committing. Reuse saves £2,500–£5,000 on rebuild.
Can I keep the brick dwarf wall?
Yes if the brickwork is in good condition and the new frame is the same height. Saves £1,500–£3,000 on rebuild.
What happens to the old uPVC?
Recycled — uPVC has a well-established recycling industry. Most installers handle this in the disposal fee.
Will the wall behind the conservatory need repair?
Often — water tracking behind old flashing damages the brick and plaster. Allow £200–£800 for make-good.
Can I demolish a conservatory myself?
Yes if you're confident with safe demolition. Roof glass and large panels are heavy and fragile — not a one-person job.
Do I need permission to demolish?
Listed buildings — yes. Conservation areas — yes if total demolition. Standard properties — no permission needed for like-for-like rebuild.
This guide was written with AI assistance and is intended for general information only. Prices are estimates based on UK averages and may vary by region. Always get at least three quotes and consult a qualified professional before starting any work.
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