Enhancing Energy Efficiency: Retrofitting Solid-Wall Homes with Insulation

Introduction

As the UK continues to prioritise energy efficiency in housing, the upcoming CPD module on retrofitting solid-wall homes with insulation, sponsored by ROCKWOOL, is set to play a crucial role. This module is designed to educate building contractors and specifiers on the benefits and practicalities of retrofitting insulation to enhance the thermal performance of existing homes.

Importance of Insulation

Effective insulation is essential for reducing energy consumption and improving comfort in homes. Various types of insulation are utilised in UK construction, including:

• Mineral wools
• Rigid plastic foams
• Natural-fibre insulants

Key metrics that define insulation performance include thermal conductivity (lambda λ-value), thermal resistance (R-value), and overall thermal transmittance (U-value). Additionally, psi-values (ψ-values) are used to measure heat loss at junctions and edges, which is critical for achieving optimal thermal performance.

Regulatory Context

The thermal performance of buildings in England is governed by Approved Document L: Conservation of fuel and power, with the current edition being from 2021. Significant changes are on the horizon, as new editions of Approved Document L will come into effect on 24 March 2027. These updates will introduce stricter minimum U-value targets for new and replacement thermal elements, making compliance essential for builders and contractors.

The Decent Homes Standard

The Decent Homes Standard sets a minimum quality benchmark for social housing in the UK, and recent updates have expanded its reach to include private rental housing. This means that all rental tenants across the UK will benefit from improved housing standards, with a final compliance deadline set for 2035. The government will actively monitor compliance rates to ensure that standards are met.

CPD Module Details

Launched on July 12, 2022, ROCKWOOL's CPD module focuses on retrofitting rainscreen insulation and cladding. The module aims to support professionals in enhancing the energy efficiency of existing buildings through comprehensive coverage of:

• Benefits of retrofitting insulation
• Planning and design considerations
• Thermal performance
• Acoustics

Paul Barrett, the Head of Product Management at ROCKWOOL, emphasises the importance of this training for building professionals who wish to stay ahead in the evolving landscape of building regulations and energy performance standards.

Conclusion

With the deadline for completing the CPD module set for 15 January 2027, industry professionals are encouraged to engage with this essential training to enhance their knowledge and skills in retrofitting insulation. As the UK moves towards improved housing standards and energy efficiency, keeping abreast of these developments will be vital for ensuring compliance and delivering quality housing solutions.