Conservatory Roof Insulation Cost UK 2026

A cheaper alternative to replacing a polycarbonate roof: insulate it with foil-clad rigid insulation under a new plasterboard ceiling. Costs £1,200–£4,000 in 2026 — half the price of a tiled replacement.

Quick answer

Typical UK price range: £1,200–£4,500. Typical time: 1–3 days.

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Conservatory roof calculator

Adjust the inputs to get an instant 2026 UK price estimate.

Replacement type Lightweight tiled Solid (warm) roof Polycarbonate→tiled Solar-control glass

Conservatory roof area (m²)

Region London South East South West Midlands North of England Scotland Wales Northern Ireland

Specification level Basic / standard Mid-range Premium / high-end

Extras

Internal plastered ceiling £600–£1,500 Recessed LED lighting £350–£900 Velux roof windows £800–£1,800 New guttering £250–£600

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Estimate only. Prices reflect 2026 UK market data — get quotes from local tradespeople for accurate pricing.

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Budget Under £5,000 £5,000 – £15,000 £15,000 – £30,000 £30,000 – £60,000 £60,000+ Not sure

Timeline As soon as possible 1 – 3 months 3 – 6 months 6+ months Just researching

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Key points

• £1,200–£4,000 for a typical 12 m² conservatory
• Half the price of full tiled replacement
• Doesn't solve all condensation issues
• Worth considering for budget upgrades

Cost breakdown

Item	Low	High
Rigid insulation (PIR)	£500	£1,500
Plasterboard + plaster	£500	£1,500
LED lighting	£200	£800

Cost by UK region

Region	Typical cost
London	£3,847
South East	£3,562
South West	£3,135
Midlands	£2,850
North England	£2,565
Scotland	£2,707
Wales	£2,565

How to save money

• Add ventilation to prevent condensation behind insulation
• Use foil-faced PIR for best thermal performance
• Consider this only for older conservatories you don't want to fully upgrade

How to find a trusted tradesperson

Get at least 3 quotes from vetted UK trade networks:

• Checkatrade
• MyBuilder
• Bark

FAQs

Will insulation cure my hot/cold conservatory?

It helps significantly, but a proper tiled or solid roof is the real fix. Insulation alone is a budget option.

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Disclaimer: Prices are guide ranges based on 2026 UK market data. Get quotes from local tradespeople for accurate pricing.