Conservatory Roof Replacement UK: Polycarbonate vs Glass vs Solid Roof - Cost Guide 2026
What is the best conservatory plastic roof sheets replacement option in the UK? For most homeowners, upgrading to 25mm or 35mm multiwall polycarbonate gives the best return - it transforms thermal performance, reduces rain noise, and costs £1,500–£3,500 installed. Glass (£3,500–£8,000) delivers better clarity and quieter rain noise but at nearly double the cost. A solid tiled roof (£8,000–£20,000+) converts the space into a proper habitable room but always requires Building Regulations approval. Read this guide before you accept any quote.















