A conservatory roof is one of the few roofs where the price can differ by several thousand pounds before anyone has touched the budget. The reason is simple: you are not buying one product. A polycarbonate roof, a glass roof and a solid roof are three different jobs, with different weights, different fixings and, in one case, a different set of rules.
The figures below come from MyBuilder's conservatory roof price guide, updated on 21/08/2026. They are typical UK ranges, not Skyline prices, and a conservatory in Swindon, Wroughton or Marlborough can land outside them. What the ranges are good for is showing you where your own quote should sit and which parts of it deserve a question. The wider picture is on our conservatory roof replacement page, and for the covering-by-covering comparison, see our guide to glass versus polycarbonate.
The published ranges, covering by covering
MyBuilder's guide gives an average of around £4,500 for a replacement conservatory roof, inside an overall spread of £2,000 to £10,000 and above. It then breaks the spread down by what goes on top of the frame. Here is how those figures line up.
| Roof type | Typical range | What mostly sets it |
|---|---|---|
| Polycarbonate | £2,000 to £5,000 | Sheet thickness, number of bays, glazing bars |
| Glass | £3,000 to £8,000 | Glass specification, roof shape, size |
| Solid | £5,000 to £10,000 | Build-up, ceiling finish, frame strength |
| Frame reinforcement | £500 to £2,000 | How far the existing frame falls short |
Notice that reinforcement sits on top of the roof price, not inside it. A frame that passes inspection costs you nothing extra. One that does not can add a meaningful slice, which is why a survey that looks at the frame before anyone quotes is worth more than a figure given over the phone.
These are national guide figures gathered by a third party. Use them as a sense-check, then let the quote we write after visiting your conservatory set the real number.
The spread inside each band is as important as the band itself. Two polycarbonate roofs of the same area can sit at opposite ends of £2,000 to £5,000 if one is a single plain lean-to and the other has several bays, an awkward return against a bay window, or an eaves line that has to be rebuilt. Wherever you see a wide range in a cost guide, assume it is made of differences like these, not of one trader being greedy and another generous.
Why a solid roof sits at the top of the range
A solid roof replaces the glazed panels with an insulated, tiled or slate-effect structure, usually finished with a plasterboard ceiling and spotlights inside. It turns the conservatory into something closer to a small extension, and the price follows.
Several things push it up. The roof is far heavier than glazing, so the frame, the dwarf walls and the foundations beneath them all have to carry more. Rafters, insulation, membrane and tiles are separate layers that each need fitting. Inside, there is plastering or boarding to do and electrics to run.
It also brings paperwork. Homebuilding & Renovating, in an article last updated on 17 July 2023, explains that putting a solid roof structure onto a conservatory is classed as a material alteration, so a building control application has to go in. Our team sorts out the Building Regulations notification for a notifiable job and explains what consent applies, but the application fee and the inspection visits still belong in your thinking about total cost.
A solid roof also changes how the room behaves. With glass overhead, a conservatory swings with the weather. With an insulated roof it holds its temperature far better, which is the real reason people pay the premium. If comfort is the aim, set the extra spend against the years of use you expect, not just against the glass alternative.
Our page on solid conservatory roofs covers the build-up in detail, and the conservatory roof regulations guide covers the rules.
What moves a glass roof between £3,000 and £8,000
Glass has the widest spread of the three because it is really a family of specifications. At the lower end sit standard double-glazed units in a straightforward lean-to or Edwardian shape. At the upper end are larger spans, Victorian or P-shaped roofs with many facets, tinted or solar-control glass, and self-cleaning coatings.
Does the roof shape change the price?
Yes, and by more than most people expect. A simple lean-to has one plane and a handful of identical panels. A multi-faceted Victorian roof has hips, a finial and panels cut to angles, so every junction is a separate piece of work and a separate place for water to get in.
Is glass specification worth paying for?
It depends on how the room is used. A conservatory that doubles as a dining room feels the sun in summer and the cold in winter, so the coating on the glass matters more there than in a room used only for storing garden furniture. Our guide to self-cleaning glass looks at one popular upgrade and what to expect from it.
Glazing bars, the aluminium or uPVC sections that hold the panes, also affect the quote. Some old bars can be reused; others have corroded or warped, and replacing the glass without replacing the bars only moves the leak problem along.
Polycarbonate: the lower figure and the shorter life
Polycarbonate is the lowest-cost route, at £2,000 to £5,000 in MyBuilder's guide, and it is light enough that most frames carry it without strengthening. For a conservatory that is cold, rarely used or being replaced on a tight budget, it can be a sensible choice.
The catch is lifespan. HomeBuilding, in an article published on 18 April 2024, puts the typical life of a polycarbonate roof at 10 years, and The Eco Experts, updated on 29 April 2024, say a glass or polycarbonate roof will last about 10 to 15 years. Treat that as a rough working figure rather than a promise. Sheets yellow, cloud, crack under the sun and lose their seals, and a roof that was cheap to fit may be due for another job inside the period a glass or tiled roof is still going strong.
That is the sort of comparison worth making when you weigh price against cost over the years. A tiled conservatory roof is described by HomeBuilding as lasting in excess of 50 years, though the covering is only one part of that: the frame, the seals and the gutters all age at their own pace.
If you are deciding between replacing one failed polycarbonate sheet and replacing the whole roof, our repair-or-replace guide sets out how we weigh it.
Our note on how long polycarbonate lasts goes further into the signs of a roof nearing the end.
Frame reinforcement: the cost people do not plan for
A conservatory frame is made to carry a certain load, and a new covering may weigh more than the roof coming off. Swapping lightweight polycarbonate for glass, or glass for a solid roof, adds weight to a structure that has stood for ten, fifteen or twenty years and may have moved slightly in that time.
MyBuilder puts structural reinforcement at £500 to £2,000. In practice the range reflects how much work the frame needs: an extra steel in the ridge, new packing under a sagging eaves beam, or reinforcing the corners where the frame meets the house wall. Homebuilding & Renovating makes the same point about solid roofs: an existing frame is being given a heavier job than it was built for, which is why a check comes before the quote and not after.
Reinforcement is also the item most likely to surprise a customer when it appears halfway through a job. That is why we want the frame looked at before the written quote is prepared. A price that already allows for what the survey finds will not grow later because someone lifted a cill and discovered rot.
How do you know if the frame needs work?
Signs include a sagging ridge, gaps opening between the frame and the house wall, doors and windows that stick, and cracks in the dwarf walls. We look at all of these during the survey and photograph what we find, so you see the same evidence we do. Our conservatory frame checks page lists what goes into that inspection.
If a frame needs more than light strengthening, we tell you plainly and explain why the roof you want cannot go on it, rather than quote a heavier roof than the structure can take.
Scaffolding, VAT and what to check in a written quote
Quotes for the same roof can look far apart because they cover different things. Before you compare, check three points on every quote you receive, ours included.
- Whether VAT is included in the total. Some national cost guides quote prices excluding it.
- Whether scaffolding or a bridge platform is covered. Checkatrade, in a guide updated in February 2026, puts conservatory bridge scaffolding at around £650 per week.
- Whether the old roof is taken away and the site cleared, or left for you to deal with.
Skyline's written quote follows the survey and gives one total price for the job. We aim for good, fair prices, and once the document is in your hands the figure is the one that applies to your conservatory, which matters more than any guide average.
Our work carries a 10-year workmanship guarantee in writing. That sits alongside, not in place of, whatever the manufacturer offers on glass or panels, and it covers how the roof was fitted rather than the materials themselves.
What should you send us to speed things up?
A few photographs from the garden, the approximate width and projection, and a note of any leaks help us decide how much to look at on the survey day. The process page shows what happens from enquiry to finished roof.
Looking at the price over the life of the roof
The lowest figure on a quote is not always the lowest cost. A roof that needs replacing again after ten or so years has to be paid for twice over the span in which a tiled roof is still doing its job, and every replacement brings its own scaffolding, disruption and mess. The sensible way to compare is to ask how long you expect to own and use the room, and which covering suits that period.
If you plan to sell within a few years, a straightforward glass or polycarbonate replacement that stops leaks and looks tidy may be all you need. If this is the home you intend to stay in, the extra for an insulated solid roof or a better glass specification is spread over a long stretch of comfortable use.
Is a repair ever the better spend?
Sometimes. A cracked sheet, a failed seal or a split glazing bar can often be put right at a fraction of replacement cost, and where that fixes the fault we recommend it. We would rather do the smallest job that properly solves the problem. What decides it is the condition of everything around the fault, and our survey photographs of your own roof let you judge that for yourself.