Warm flat roofing systems are a popular choice in the UK for both new builds and refurbishments — especially when energy efficiency and compliance with building regulations are key. Here’s a clear breakdown for you:
Insulation Placement: The insulation is installed above the structural deck and beneath the waterproofing layer, keeping the entire roof structure warm.
• Continuous Thermal Envelope: This setup minimizes thermal bridging and condensation risks, making it ideal for damp climates like ours.
🧱 Key Components
• Vapour Control Layer (VCL): Prevents moisture from penetrating the insulation.
• Insulation Layer: Often mineral wool or rigid boards — mineral wool adapts better to imperfections.
• Waterproof Membrane: EPDM, GRP, or single-ply membranes are common choices.
✅ Advantages
• Meets Building Regulations: Especially Part L, which mandates thermal upgrades during refurbishments.
• Energy Efficient: Reduces heating costs and improves comfort.
• Quick Installation: Mechanically fixed systems are fast and secure.
⚠️ Considerations
• Height Build-Up: May require adjustments to parapets or thresholds.
• Cost: Slightly higher upfront than cold roofs, but pays off long-term.
For your new roofing venture, warm roof systems could be a strong offering — especially paired with EPDM.
