Insight · May 2026
Solid Roof Conservatory Conversion: Is It Worth It in 2026?
A solid roof conservatory conversion replaces a polycarbonate or glass roof with a fully insulated tiled roof, making the room usable year-round. Costs start at £6,000 for a small conservatory.
What Is a Solid Roof Conservatory Conversion?
A solid roof conservatory conversion replaces an existing polycarbonate or glass conservatory roof with a fully insulated tiled roof — typically using a lightweight roofing system such as Ultraroof, Livin Room or Guardian. The result is a room that is warm in winter, cool in summer, and quiet in rain.
The conversion typically takes 3–5 days and does not usually require planning permission under Permitted Development, making it one of the most cost-effective ways to improve a conservatory.
How Much Does a Solid Roof Conversion Cost in 2026?
| Conservatory Size | Supply & Fit Cost | Typical Timeline |
|---|---|---|
| Small (≤12m²) | £6,000–£10,000 | 3–4 days |
| Medium (12–20m²) | £9,000–£15,000 | 4–5 days |
| Large (20m²+) | £13,000–£22,000 | 5–7 days |
Costs include removal of old roof panels, new insulated roof system, plastered ceiling, and basic internal decoration. Electrics, flooring and radiators are typically extra.
Is a Solid Roof Conversion Worth It?
Benefits
- Genuinely usable year-round — insulated roof eliminates the greenhouse/icebox problem
- Quieter — rain noise on polycarbonate can make the room unusable in bad weather
- Added value — estate agents report solid-roof conservatories command a premium vs polycarbonate
- Planning permission usually not needed — most conversions are Permitted Development
- Quick installation — typically 3–5 days with no loss of the room structure
Limitations
- Cost — £6,000–£22,000 depending on size; not cheap
- Less natural light — a solid roof reduces the light that made conservatories appealing
- May require upgraded heating — a well-insulated room needs a radiator or underfloor heating to function in winter
- Not always planning-free — listed buildings and conservation areas may need consent
Frequently Asked Questions
Does a solid roof conservatory conversion add value?
Yes. Estate agents report that solid-roof conservatories are viewed more favourably by buyers than polycarbonate-roofed ones. A well-converted room that functions year-round is treated more like an extension by buyers and valuers.
Do I need planning permission for a solid roof conservatory conversion?
Most solid roof conversions are Permitted Development and do not need planning permission, provided the conservatory itself was built under Permitted Development. Listed buildings and conservation areas always need consent. Check with your local planning authority if unsure.
How long does a solid roof conservatory conversion take?
Most conversions take 3–5 days. A large or complex conservatory may take up to 7 days. The existing frame and walls are retained — only the roof is replaced.
Which solid roof systems are best?
The leading systems in the UK are Ultraroof (Ultraframe), Livin Room (LEKA Systems) and Guardian Warm Roof. All use lightweight insulated panels designed to be fitted to existing conservatory frames. Get at least 3 quotes specifying the system to compare like for like.
Can I convert a Victorian or Edwardian conservatory to a solid roof?
Yes. Victorian and Edwardian styles can be converted. The conversion company will assess the existing frame condition and dwarf walls. Most modern UPVC and aluminium frames can support a solid roof; some older or weaker frames may need reinforcement.