How much does it cost to replace a conservatory roof?

If your conservatory is too hot in summer, too cold in winter, or loud in the rain, replacing the roof of your conservatory can make a big difference. For homeowners in Reading and across Berkshire, the main question is usually cost.

The price depends on the roof type you choose (glass, polycarbonate, or tiles), the size and shape of the conservatory, and whether any structural work is needed.

As a rough guide:

• Polycarbonate is usually the lowest cost.

• Glass sits in the middle.

• A tiled warm roof is often the best all-round upgrade for comfort and year-round use, but it is normally the highest investment.

If you are exploring options, here’s a helpful overview of conservatory roof replacement solutions and what’s involved.

Conservatory roof in Berkshire replaced with tiles and skylights

What affects the cost of replacing a conservatory roof?

Even for the same roof material, quotes can vary. These are the biggest price drivers:

• Size and shape (lean-to, Victorian, Edwardian, bespoke designs)

• Access and scaffolding needs

• Condition of the existing frame (sometimes reinforcement is required)

• Insulation level and internal finish (plasterboard, spotlights, roof windows)

• Guttering and fascias

• Electrical work (lighting changes or moving existing fittings)

• Building regulations requirements (often relevant when changing to a solid roof)

It’s also worth considering what you want the space to be. If you want it to feel like a proper room, a warmer roof system with good insulation and a finished internal ceiling is usually the direction people go in.

How much does it cost to replace a conservatory roof with glass?

A new glass conservatory roof is a popular upgrade from older polycarbonate. It lets in plenty of light and can look very clean and modern.

Typical price range (guide only):

• Small conservatory: £3,000 to £5,500

• Medium conservatory: £5,500 to £8,500

• Large or complex designs: £8,500 to £12,000+

Glass roof pricing varies a lot depending on the glazing specification (for example, solar control glass), roof pitch, and the amount of structural work required.

Pros of glass:

• Bright, open feel

• Modern appearance

• Better than old polycarbonate for noise and insulation (depending on spec)

Things to watch:

• It can still overheat without the right glazing choice

• Heat loss can still be an issue compared to a well-insulated solid roof

Warmer Roof conservatory roof replacement system using multiple layers. Learn more from our roof replacement page.

How much to replace a conservatory roof with tiles?

If your goal is to make the conservatory comfortable all year, a tiled roof is usually the strongest option. It turns the space into something closer to a true extension, especially when paired with a properly finished internal ceiling.

Typical price range (guide only):

• Small conservatory: £6,000 to £9,500

• Medium conservatory: £9,500 to £14,000

• Large or complex designs: £14,000 to £20,000+

A tiled warm roof costs more because it is not just a “roof covering”. It’s a fully insulated roof build-up, and it often includes internal plastering and electrical changes.

Why tiles are often the best option

For many homeowners, tiled roofs win because they solve everyday problems:

• Better insulation for winter comfort

• More stable temperature in summer

• Quieter in heavy rain

• A more “room-like” feel inside

If you are comparing systems, the Warmer Roof type solution is designed as a complete insulated replacement roof. It is commonly sold with a manufacturer-backed warranty (often up to 25 years, depending on the exact product and terms). That warranty is from the manufacturer, not a promise that every home will see the same outcome, as results still depend on the existing structure and how the space is used.

How much to replace a conservatory roof with polycarbonate?

Polycarbonate is the most budget-friendly option and is still chosen when homeowners want to freshen up a tired roof without changing the style of the conservatory.

Typical price range (guide only):

• Small conservatory: £1,500 to £3,000

• Medium conservatory: £3,000 to £5,000

• Large or complex designs: £5,000 to £8,000+

The biggest advantage is the lower upfront cost. The trade-off is performance. Even modern polycarbonate tends to be noisier in rain and offers less insulation than a well-specified glass roof or a tiled warm roof.

Pros of polycarbonate:

• Lower cost

• Faster, simpler swap in many cases

• Keeps a similar look to older conservatories

Things to watch:

• Comfort can still be an issue in hot and cold weather

• Noise in heavy rain is a common complaint

Conservatory roof in Reading replaced with a solid roof

Extra costs people forget to budget for

When comparing quotes, make sure you know what is included. These items can change the final price:

• Scaffolding (especially for larger roofs or tricky access)

• Internal plastering and decorating

• New lighting (spotlights are common with solid roofs)

• Roof windows or skylights (if you want more daylight with tiles)

• Upgraded gutters and fascias

• Repairs to the existing frames or walls if problems are uncovered

A good quote should be clear about what is included and what is optional.

Is a conservatory roof replacement worth it?

If you mainly use the conservatory for storage or only on warm days, you may not need the top-end option. But if you want the space to be used daily, the roof type matters.

A warmer, quieter, more comfortable room can also reduce the temptation to “start over” with a full rebuild.

If you are thinking longer-term improvements, some homeowners also look at upgrades like new windows or new doors at the same time, especially if the frames are older and draughty. These can be sensible add-ons when the goal is comfort and a cleaner finish.