Conservatory Roof Replacement Cost in 2026 (UK)
A conservatory roof replacement costs £3,500–£10,000 in 2026 for a warm solid or tiled roof, with a smaller lean-to at the lower end and a large Victorian or Edwardian conservatory nearer the top. Swapping tired polycarbonate for new glass or polycarbonate is cheaper at £1,500–£4,000, but a solid roof is what finally makes the room usable in winter and summer. Here are the 2026 prices by roof type and size, and what drives the quote.
2026 conservatory roof replacement costs
| Roof type | Typical cost (2026) | Notes |
|---|---|---|
| New polycarbonate (like-for-like) | £1,500–£3,000 | Cheapest, least insulating |
| Glass roof (self-cleaning, solar) | £2,500–£5,000 | Brighter, better than poly |
| Solid/tiled roof — small lean-to | £3,500–£5,500 | Warm, quiet, usable year-round |
| Solid/tiled roof — Victorian/Edwardian | £6,000–£10,000 | Larger span, more structure |
| Internal insulated ceiling only | £1,200–£2,500 | Keeps existing outer roof |
Which roof type is right for you
Polycarbonate is the cheapest swap but does little for temperature or noise. Glass is a big step up for light and comfort. A solid or tiled roof is the only option that truly turns a conservatory into an all-year room — warm in winter, cool in summer and quiet in the rain — which is why it is now the most requested replacement despite the higher price.
What drives the price
Size and shape are the main factors: a small lean-to is far cheaper than a large Victorian roof with multiple facets. Beyond that, the quote depends on the frame's condition, whether the existing structure can take the extra weight of a tiled roof, any new internal plaster and lighting, and whether building regulations sign-off is needed — which it usually is for a solid roof.
Do you need building regulations?
A solid or tiled roof adds weight and changes the thermal performance, so it normally needs building regulations approval and a structural check that the existing frame and base can carry it. A reputable installer includes this in the quote. A like-for-like glass or polycarbonate swap generally does not need approval.
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