Glass vs. Polycarbonate vs. Warm Roof: What’s the Best Conservatory Roof Upgrade in the UK?

If your conservatory is too cold in winter or unbearably hot in summer, it might be time for a roof upgrade. But which type is best: glass, polycarbonate, or a modern warm roof system? In this guide, we break down the pros and cons of each option for UK homeowners-especially those in Lincolnshire-looking to improve comfort, energy efficiency, and home value.

1. Glass Conservatory Roofs

Pros:

• Natural light floods the space
  
• Sleek, modern appearance
  
• Available with solar-control coatings for better thermal performance
  

Cons:

• Poor insulation: Heat escapes quickly in winter
  
• Glare and overheating in summer
  
• Requires regular cleaning to maintain clarity
  
• Expensive when compared to polycarbonate
  

Best for:
Homeowners who value natural light above all and are willing to supplement with blinds or heating/cooling.

2. Polycarbonate Conservatory Roofs

Pros:

• Cheapest option
  
• Lightweight and easy to install
  
• Some UV protection
  

Cons:

• Very poor insulation - cold in winter, hot in summer
  
• Noisy during rain or wind
  
• Not visually appealing
  
• Shorter lifespan compared to other options
  

Best for:
Budget-limited upgrades or temporary solutions.

3. Guardian™ Warm Roof System

Pros:

• Excellent insulation: Fully insulated tiled roof keeps your conservatory usable year-round
  
• Helps reduce energy bills
  
• Converts a conservatory into a true extension of the home
  
• Increases property value and appeal
  
• Customisable finishes (slate, tile, interior plastering)
  
• Meets Building Regulations in the UK
  

Cons:

• Higher upfront cost (but better ROI over time)
  
• Slightly reduced natural light (though rooflights can be added)
  

Best for:
Homeowners who want a permanent, energy-efficient upgrade that transforms their conservatory into a true living space.

Warm Roof vs Glass and Polycarbonate: The Verdict‍

Final Thoughts

If you're serious about making your conservatory a usable space all year round-not just a summer room-then the Guardian™ Warm Roof system is the clear winner. While glass and polycarbonate have their uses, they simply can’t compete when it comes to insulation, comfort, and long-term property value.

Ready to Upgrade?

At Advanced Roofing, we’re certified installers of the Guardian™ Warm Roof System across Lincolnshire. We handle everything-from removing your old roof to installing the new one to full plastering and finishing touches.

Contact us today to get a free quote or learn more about transforming your conservatory.