Depending on the type of roof you choose, the cost of replacing a conservatory roof can vary considerably. A new roof can not only change the look of your roof but also help in temperature control so your rooms are in liveable condition throughout the year. In winter it can also raise the temperature of the room and lower it in summer. So if your old roof lets in too much heat or loses warmth quickly it may be worth upgrading. This guide covers the average costs for each type of roof so you exactly know what you’re getting into before starting the roof replacement job.
The average conservatory roof replacement cost in the UK is somewhere between £2,000 and £15,000. The biggest thing that affects the price is your choice of material.
A small conservatory with a new polycarbonate roof will sit at the lower end of the price range whereas a bigger conservatory with a fully insulated tiled roof is going to cost a whole lot more. The very large conservatories or high end projects can sometimes run in excess of £20,000.
You should think about how you want to use the room and your budget. A like for like replacement gives you a new roof. A solid roof will transform your conservatory into a room that can be utilised all year round.
| Roof type | Typical cost (small to average conservatory) | Lifespan |
|---|---|---|
| Polycarbonate | £2,000 to £6,500 | Around 10 to 15 years |
| Glass | £3,300 to £9,500 | Usually lasts much longer than polycarbonate |
| Tiled or solid roof | £5,000 to £15,000 | 50 years or more |
| Hybrid (solid roof with glass sections) | £6,000 to £12,000 | Similar to a solid roof |
Polycarbonate
Polycarbonate is the cheapest material option available if your main goal is to replace an old roof but not spend too much money on it.
The bad news is the insulation as these roofs can become very hot in summer and very cold in winter. They also tend to fade and cloud up after 10 to 15 years.
Glass
Glass roofs allow for much more natural light and they tend to retain heat better than polycarbonate.
If your conservatory receives plenty of direct sunshine, you should ask about solar control glass. It helps keep the room from getting too hot in the warmer months.
Solid or tiled roofing
This is the option that a lot of home owners choose when they want to use the conservatory on a daily basis.
This roof has insulation beneath the lightweight tiles. The finished room looks a lot more like a standard extension than a traditional conservatory. If you choose to get a solid roof, it will cost you the most but it will also be the most comfortable option for living.
Hybrid roofs
A hybrid roof is basically a type of roof that has solid sections with glass panels or a roof lantern.
If you are after something that will be better insulated but not lose too much of the natural light, it is a nice middle ground.
One of the most popular options for home owners is to upgrade from a polycarbonate or glass roof to a tiled roof.
This type of replacement can cost you between £5,500 to £14,500. As an average, most homeowners spend £7,500 to £10,500 on a standard conservatory of about 12 to 18m².
The final price ofcourse depends on the conservatory’s size, shape, the tiles you choose and whether the currently installed frame needs strengthening or not.
A tiled roof is much heavier than polycarbonate so you should always have your installer check the frame before starting work.
If you want lots of daylight then you can fit roof windows. Most people select two to four. Each fitted, they usually cost between £450 and £750. If you choose to skip roof windows, it will save you some money but your rooms will end up darker as there won't be a direct source of light.
- First the old roof is removed.
- Then the installer examines the old frame. This is a step that counts because if you are going to a heavier roof, the frame must be strong enough to hold it.
- If necessary, the frame is reinforced before the new roof is fitted.
- Then you put on the new roof. Polycarbonate and glass roofs are normally quicker to fit. The solid roof installation takes longer because they include insulation and an internal ceiling.
- Normally the interior is plastered and finished with a solid roof. It makes the room look that much more finished and helps it feel like part of the house.
There are a few factors that can affect the final price.
Roof material. This has the greatest effect on cost.
Size and shape. A simple lean-to conservatory will be cheaper than a Victorian or P-shaped one.
Frame strengthening. If additional support is needed, this can add £500 to £2,000.
Interior finish. Plastering and finishing a solid roof costs usually between £500 and £1,500.
Roof windows. Each will cost between £450 and £750.
Where you live. Labour is typically more expensive in London and the South East.
Replacing a conservatory roof with the same type of roof doesn’t normally require planning permission.
If you’re switching from a glass or polycarbonate roof to a solid tiled roof, it’s a little different. It is usually still Permitted Development so planning permission is not usually needed.
You will normally need Building Regulations approval as the roof is heavier and the insulation is changing. Many installers include this as part of the job but it’s always worth checking ahead of accepting a quote.
- Some quotes don’t give you the full info.
- If frame strengthening is needed it may be charged separately.
- Sometimes plastering and decorating inside is an extra and not included in the price of the roof.
- Roof windows can be an extra cost too so check exactly what’s included.
- If you are having a solid roof fitted, you should ask the contractor if Building Regulations approval is included in the quote.
Prices on this page are guide only. The final cost of your conservatory will depend on its size, the type of roof you choose and the state of the existing frame.
Get a personalised estimate with our calculator and if you want to compare real prices you can also ask for quotes from local roofers. Get detailed quotes with no obligation to proceed.