COST GUIDE
How much does a conservatory roof replacement cost?
The most common question we hear from homeowners considering a conservatory roof replacement is straightforward: how much will it cost? The honest answer is that it depends on your conservatory — its size, shape, access, the specification you choose and the condition of the existing structure. But we can set out the typical price ranges so you know what to expect before requesting a survey.
Typical UK costs for a tiled conservatory roof in 2026
A lightweight tiled conservatory roof replacement in the UK typically costs between £6,000 and £15,000, with the average falling around £11,500. That range covers the complete job: removal of the old roof, the new roof structure, insulation, tiles, internal plastered ceiling, and any building control fees.
The table below shows indicative prices by conservatory size. These are guide figures, not fixed prices — every conservatory is different, and a survey is the only reliable way to quote accurately.
| Conservatory size | Composite tiles | Slate or clay tiles |
|---|---|---|
| Small (approx. 3 × 3 m) | £6,000 – £8,000 | £8,000 – £11,000 |
| Medium (approx. 4 × 4 m) | £8,000 – £11,000 | £11,000 – £14,000 |
| Large (approx. 5 × 5 m) | £12,000 – £15,000 | £15,000 – £20,000+ |
Per square metre, expect to pay in the region of £480 – £890 for composite tiles, or £600 – £1,200 for natural slate or clay. These per-metre figures include labour, materials and the internal finish.
What is included in the price
A reputable quotation for a tiled conservatory roof replacement should include:
- Removal and disposal of the existing roof covering.
- The new lightweight roof structure, insulation and weatherproofing.
- External tiles, ridge and any flashings.
- Internal plastered and finished ceiling.
- Any roof windows or glazed panels agreed at survey.
- Building control certification (where the installer is registered under a Competent Person Scheme such as CERTASS).
- Guarantee terms for both workmanship and materials.
If any of these items are missing from a quotation, ask why. Some companies quote a headline price that excludes the internal finish, building control fees or disposal, which can add £1,000 or more to the final bill.
What affects the price
Size and shape. A larger roof costs more because it needs more material and more labour. Complex shapes — L-shaped, P-shaped or conservatories with multiple hips and valleys — take longer to build than a simple lean-to or Edwardian.
Tile choice. Lightweight composite tiles are the most common option and sit at the lower end of the price range. Natural slate or clay tiles cost more but may be preferred where matching the existing house roof is important, or where appearance is a priority.
Roof glazing. If you want to retain some overhead light — through a roof window, a glazed ridge or fixed glass panels — this adds to the cost. The exact amount depends on the size and type of glazing.
Structural work. Most conservatories can accept a lightweight tiled roof without modification, but some need remedial work to the base, walls or frame before the new roof can be fitted. If the existing structure has cracked dwarf walls, corroded steel, movement or damp, this must be addressed first. A survey identifies these issues before you commit.
Access and location. Difficult access — narrow side passages, limited space for scaffolding or materials storage — can increase costs. Regional price differences also apply: work in London and the South East tends to be higher than the national average.
Building control. If the installer is registered with a Competent Person Scheme (such as CERTASS), they can self-certify the work, and the building control fee is included in their registration. If not, you may need to pay for a local authority building control application separately, which typically costs £400 – £800.
How long does the installation take?
Most tiled conservatory roof replacements take between 3 and 7 working days, depending on the size and complexity. A small lean-to might be completed in 3 – 4 days; a large or complex shape could take a full week. The conservatory will be out of use during this period, but the rest of the house is unaffected.
Is it worth the investment?
That depends on how much you value the space. A conservatory that sits empty for nine months of the year is not contributing to your home. A room that is comfortable, quiet and finished to the same standard as the rest of the house adds usable living space. Whether that justifies the cost is a personal decision, but homeowners who go ahead consistently tell us they wish they had done it sooner.
It is worth noting that a tiled conservatory roof does not automatically increase your property's value by the amount you spend. What it does is remove a negative — an unusable room that buyers notice — and replace it with a positive. Estate agents generally regard a properly finished garden room more favourably than a tired conservatory with a discoloured polycarbonate roof.
How to get an accurate price
Online calculators and guide prices (including the figures on this page) are useful for budgeting, but they cannot account for the specifics of your conservatory. The only reliable way to get an accurate price is to have the conservatory surveyed.
S.R.S Windows Ltd offers a free, no-obligation survey across Kent and Medway. We visit, inspect the existing structure, discuss what you want from the room and provide a written quotation with a clear specification. There is no pressure to proceed.
Call 07889 631 319 or request your free quotation online.
Read more about how conservatory roof replacement works. We offer free surveys across Medway, Maidstone, Dartford, Gravesend and Sittingbourne.
Prices in this article are based on industry data for the UK in 2026 and are intended as a general guide. Your actual cost will depend on the specification, condition and location of your conservatory. Sources: Checkatrade, MyJobQuote.
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