Energy Performance Certificates (EPCs) are designed to measure the energy efficiency of a property, ranging from A (most efficient) to G (least efficient). While insulation, heating systems, and windows are commonly highlighted factors, the structure and complexity of a property’s roof can also significantly influence EPC ratings. Learn more about our Residential EPC Services for detailed assessments.

Why Roof Structures Matter for EPC Ratings

1. Increased Heat Loss

   • Properties with large or unusually shaped roofs, such as attics, loft conversions, or multi-level roof designs, have a higher roof-to-floor ratio.

   • A larger roof area relative to the living space increases the risk of heat loss, potentially lowering EPC scores. Explore how Same Day EPC Services can help you quickly identify these issues.

2. Complex Roof Geometry

   • Roofs with multiple slopes, dormers, or intersecting angles create thermal bridging points, where heat escapes more easily.

   • Assessors must account for these areas when calculating EPC ratings, as they can negatively impact the energy efficiency score. Learn more on our About Us page.

3. Glazed Roof Sections and Conservatories

   • Skylights, sunrooms, and fully glazed roofs can contribute to significant heat gain in summer and heat loss in winter.

   • Proper insulation and energy-efficient glazing are crucial to maintain higher EPC ratings. Check our Residential EPC Services for options.

4. Loft and Attic Conversions

   • Adding living space under the roof changes the building’s thermal profile.

   • Inadequately insulated conversions can reduce EPC scores, while well-insulated designs can improve them. For guidance, review our Pricing Plans to see cost-effective EPC solutions.

Improving EPC Ratings in Complex Roofs

• Enhanced Insulation: Use high-performance insulation in sloped or irregular roof areas.

• Thermal Bridging Solutions: Seal gaps and reinforce junctions to prevent heat escape.

• Energy-Efficient Glazing: Install low-emissivity glass for skylights or glazed roof sections.

• Regular EPC Review: Have properties with complex roof designs re-assessed after improvements. Contact our team via Contact Us for expert advice.

Why Accurate EPC Assessments Are Essential

Complex roofs require careful evaluation to ensure EPC ratings reflect the true energy efficiency of the property. Accurate assessments help homeowners:

• Improve energy efficiency strategically.

• Comply with UK property regulations.

• Increase property value by maintaining high EPC ratings. Learn more about our process on the Residential EPC page.