How Much Does a Conservatory Roof Replacement Cost?
Updated: 10 hours ago
Replacing a conservatory roof typically costs £2,500 to £8,000 for a new glass roof and £4,500 to £10,500 for a solid tiled roof, supplied and fitted including VAT, with a hybrid roof of insulated panels and glazing usually between the two. After that, the figure depends on the size and shape of the existing roof, whether the frames underneath can carry the new weight, and how much of the structure has to change to make the new roof work.
We build luxury conservatories with roofs designed to be lived under, and we see both sides of the question: a cold conservatory worth keeping, and one where the roof is the least of the problems.
Typical UK prices
Supplied and fitted, including VAT:
Glass roof: £2,500 to £4,000 up to 3m x 3m; £4,000 to £6,000 up to 4m x 4m; £5,500 to £8,000 up to 5m x 5m.
Solid tiled roof: £4,500 to £6,500 up to 3m x 3m; £6,000 to £8,500 up to 4m x 4m; £8,000 to £10,500 up to 5m x 5m.
By style, medium size: lean-to £4,000 to £6,000; Edwardian or Victorian £5,000 to £8,000; P-shape £7,000 to £11,000.
Building control fee where approval is needed: around £200 to £400.
Structural strengthening is extra, and premium glass and finishes sit toward the upper end. These are typical UK market prices from published cost guides as of 2026; bespoke designs are priced after a survey.
What does it cost to replace a conservatory roof with glass?
A new glass roof on an existing conservatory is the least disruptive replacement and usually the cheapest. The existing frames stay, the old polycarbonate or tired glass comes out, and modern insulated glass units go in, often with a solar control coating that the original roof never had.
The cost rises with the number of glazing bars and the complexity of the roof shape. A lean-to with a handful of large panels is straightforward; a Victorian roof with a faceted end and a ridge has many more pieces, each cut to size.
A glass replacement works when the frames are sound. If the frames have moved, the seals have failed or the roof structure was never designed for the weight of glass, the replacement becomes a rebuild.
What affects the cost of a solid or tiled conservatory roof?
A solid roof replaces the glazing with an insulated, lightweight tiled or slate-effect roof, usually with a plastered ceiling inside. It is the option people reach for when a conservatory is unusable in summer and winter, and it does solve that problem. For solid and tiled roof replacements around Reading, K&S Bespoke Builds specialise in conservatory roof replacement.
A tiled conservatory roof cost includes the roof structure, insulation, the external covering and the internal ceiling, but it often excludes the structural work needed to carry it. A conservatory built for a light polycarbonate roof was not built for a heavy one, and the frames, the ring beam and sometimes the foundations need checking by an engineer before a solid roof goes on.
The trade-off is light. A solid roof turns a glazed room into a room with windows, and a good share of the reason for having a conservatory disappears with the glazing. Rooflights help, and a run of them along the ridge can recover much of what is lost, but the room will not feel the way it did.
What is a hybrid conservatory roof and how does it compare on cost?
A hybrid roof mixes insulated solid panels with glazed sections. The usual pattern is solid panels on the sides, where the sun is lowest and the heat loss highest, and glass in the centre or along the ridge. Some hybrid roofs place a roof lantern in the middle of an otherwise solid roof, which gives a conservatory something of the character of an orangery.
The cost usually sits between glass and solid. In our view it is often the best answer for a conservatory that is worth keeping: the room stays bright, the worst of the summer heat is dealt with, and the winter performance improves without the room becoming a box.
What changes the cost of a conservatory roof replacement?
Size and shape. A simple lean-to is the cheapest to re-roof in any material, and where only a few conservatory roof panels have failed, replacing those may be enough. Victorian and Edwardian shapes, with their hips and ridges, cost more because there are more components and more junctions to seal.
The existing structure. This is the one that surprises people. A roof quote assumes the frames and the base can take the new roof. If they cannot, the right advice is usually a new conservatory rather than an expensive roof on a failing structure. Our guide to conservatory roof types explains what each roof asks of the frames beneath it.
Specification. Solar control glass, triple glazing, self-cleaning coatings, integrated blinds, a plastered ceiling with recessed lighting under a solid roof: each is worth having and each adds to the price.
Building regulations. In England, replacing a glazed roof with a solid one needs approval, which adds a building control fee. A glass-for-glass replacement usually does not, but the new glazing must still meet current thermal standards.
What should a conservatory roof replacement quote include?
Two quotes for the same roof can differ widely because they include different work. Check each one for:
Scaffolding or access towers.
Removal and disposal of the old roof.
An engineer's check of the frames, and any strengthening, new posts or ring beam.
The new roof build-up: glass specification, or insulation, covering and ceiling for a solid roof.
Renewal of the flashing and wall abutment where the roof meets the house, which is where leaks start.
Plastering, electrics for downlights and making good inside.
The building control fee where approval is needed.
VAT.
A quote that is silent on the flashing or the structural check is a quote to question.
How can you keep the cost down?
Keep the frames if they are sound, because a glass-for-glass replacement avoids the structural work a solid roof brings. Choose the simplest roof form the house allows. Have the engineer's check done before comparing quotes, so every installer prices the same structure. And if the conservatory is near the end of its life, compare the roof cost with a replacement conservatory before committing.
Is a new roof worth it, or is it time for a new conservatory?
This is the question we would ask before quoting for a roof. A replacement roof on a conservatory that is otherwise sound, sits on a proper base and is the right size for the house is money well spent. A replacement roof on a conservatory that is too small, poorly positioned, cold at the floor and draughty at the frames is money spent on the wrong problem.
The rough test is age and base. A conservatory under fifteen years old on an insulated slab with sound frames is a candidate for a new roof. One older than that, or one with a suspended floor and single-glazed sides, is usually better replaced, and our guide to conservatory cost explains what a new one involves. Our guide to conservatory roof insulation cost covers the cheaper interim options for a roof that is not quite ready for replacement.
What does a conservatory roof replacement involve on site?
A glass-for-glass replacement takes the old glazing out panel by panel, renews the gaskets and cappings on the glazing bars, fits the new units and tests the roof. On a simple lean-to that is a matter of days; a Victorian roof takes longer.
A solid roof replacement removes the old roof entirely, including the ridge, glazing bars and usually the ring beam. Any strengthening the engineer has specified goes in first, then the new structure is fixed, insulated, covered and finished inside with a plastered ceiling, with electrics run before it closes. Allow one to two weeks, longer if structural work is needed, during which the conservatory is open to the weather and should be cleared.
How long does a replacement conservatory roof last?
A modern insulated glass roof should give twenty years and more before the sealed units begin to fail. A tiled or slate-effect solid roof lasts as long as any house roof, with the same attention to flashings and gutters. The limit is usually the structure beneath: a new roof on twenty-year-old frames will outlive them.
Conservatory roof replacement cost questions, answered
How much does it cost to replace a conservatory roof with a tiled roof?
Typically £4,500 to £10,500 supplied and fitted, including VAT, from a small lean-to up to a 5m x 5m conservatory, before any strengthening. Within that, the cost is set by the roof area and shape, the covering chosen, the structural work the existing frames and base need to carry the extra weight, the ceiling and electrics inside, and the building control fee. The structural work is the variable that moves it most, which is why a survey of the existing structure comes first.
Can you put a solid roof on any conservatory?
No. The frames and base must be able to carry the extra weight, and many conservatories built for polycarbonate cannot without strengthening. An engineer's assessment comes before any solid roof.
Will a new glass roof stop my conservatory overheating?
Modern solar control glass makes a large difference and is the first thing we would change on a hot conservatory. It will not make a south-facing glazed room cool in a heatwave on its own; ventilation and shading do the rest.
Talk to our design team
If you would like to talk to us about your project, the first step is a look at what the existing conservatory can carry.
