Conservatory Roof Replacement Cost UK (2026 Guide)

Millions of UK homes have a conservatory, and a large proportion of them have roofs that are either failing or simply not fit for purpose. Whether you're dealing with a leaking polycarbonate roof, an ageing glass structure, or looking to upgrade to a fully insulated solid or tiled roof, understanding the costs involved will help you make the right decision.

This guide breaks down conservatory roof replacement costs across all the main options available in the UK in 2026.

Conservatory Roof Replacement Cost: At a Glance

The cost of replacing a conservatory roof varies enormously depending on size, material and the type of roof you're moving to. Here's a summary of typical prices for a standard 3m × 4m conservatory (12m²):

Prices rise considerably for larger structures, complex roof shapes (hipped ends, lantern features) and in London and the South East where labour costs run 20–30% higher.

Breaking Down the Options

Polycarbonate Roof Replacement

Polycarbonate panels are the cheapest conservatory roofing material. They're lightweight and easy to install, which keeps labour costs down. However, polycarbonate roofs offer poor insulation (typically just 1.5–2.0 W/m²K), can be noisy in rain, and discolour over time.

If you're replacing like-for-like, this is the most affordable option. Most polycarbonate conservatory roof replacements come in at £1,200–£2,500 for a standard-sized structure.

Glass Roof Replacement

Self-cleaning solar-control glass has improved significantly over the past decade. A glass replacement conservatory roof lets in more light than polycarbonate, handles temperature better and generally looks more attractive.

Expect to pay £2,500–£5,000 for a standard-sized glass conservatory roof replacement, depending on the specification of glass chosen and the complexity of the frame.

Solid Insulated Roof (Warm Roof)

Solid conservatory roofs — sometimes marketed as Guardian Warm Roofs, SupaLite, LivinRoof or similar — replace the glazing with an insulated roof structure that typically includes a plasterboard ceiling on the interior. These transform a conservatory into a genuinely year-round room.

Costs start from around £5,000 for a basic installation on a modest-sized structure and rise to £8,000–£10,000 for larger or more complex roofs. Planning permission is generally required, though many fall under permitted development.

Tiled Roof Replacement

Tiled conservatory roofs (typically concrete or slate tiles over an insulated structure) offer the best thermal performance and the most house-like appearance. They're also the most expensive option.

Typical costs run from £6,000 to £12,000 for a standard structure. More complex designs with hipped ends, valleys or integrated skylights can push costs higher still.

What's Included in the Price?

When getting quotes for a conservatory roof replacement, make sure you understand what's included. A full price should typically cover:

• Removal and disposal of the existing roof
• Supply and installation of new roof materials
• Any new glazing bars or frame elements required
• Weatherproofing, flashing and sealing
• Structural calculations (required for solid/tiled roofs)
• Making good of any internal finishes disturbed

Some installers quote a headline price then add for extras such as scaffolding, planning applications or additional insulation. Always ask for a written, itemised quotation.

Do You Need Planning Permission?

Replacing a conservatory roof with the same type of roof (polycarbonate for polycarbonate, glass for glass) generally does not require planning permission under permitted development rights.

However, converting to a solid or tiled roof — which changes the character of the structure — typically does require planning consent. Most local authorities will approve these applications where the property isn't in a conservation area and the conservatory doesn't adjoin a principal elevation, but always check with your local planning authority first.

How Long Does a Conservatory Roof Replacement Take?

• Polycarbonate or glass replacement: 1–2 days
• Solid/warm roof: 2–4 days
• Tiled roof: 3–5 days

More complex structures or those requiring scaffolding may take longer.

Finding a Reliable Conservatory Roof Specialist

Conservatory roof replacement is a specialist job. Look for:

• FENSA or CERTASS registration for any work involving glazed elements
• Membership of the NFRC for roofing contractors
• A written guarantee — reputable installers typically offer 10–25 year guarantees
• References or reviews from previous customers

Search for conservatory roof specialists in your area on Local Roofer Directory.

FAQ

Can I replace just the panels, not the whole roof? Yes — if the frame is in good condition, replacing polycarbonate or glass panels only is possible and cheaper than a full roof replacement. Ask your contractor to assess the frame as part of any quote.

Will a new conservatory roof add value to my home? Upgrading from polycarbonate to a solid or tiled roof can add meaningful value by creating a genuine extra room. Estate agents often reclassify a solidly-roofed conservatory as habitable space, which can show up in square footage calculations.

Is a solid conservatory roof worth the extra cost? For most homeowners, yes — if you're planning to use the room year-round. A solid roof pays back through reduced heating bills and transforms what is often an unusable space in winter or on hot summer days into a comfortable living area.

My conservatory roof is leaking — should I repair or replace? If the conservatory roof is more than 10–15 years old and showing widespread deterioration, replacement is usually more cost-effective than repeated repairs. A specialist can assess whether a targeted repair is viable.