At Zero Carbon Group, we are working with energy companies, local authorities, housing associations and their Tier 1 providers, to improve the energy efficiency of Britain’s housing stock. By taking a ‘fabric-first’ approach, we are providing External Wall Insulation (EWI), Internal Wall Insulation (IWI), Loft Insulation and other insulation solutions which will help homes across the country improve their EPC ratings, reduce carbon emissions, and lessen energy bills for tenants and homeowners alike.

With the benefit of over 40 years experience, we focus on EWI from an insulation perspective, but can also deliver IWI and loft insulation measures to the same exacting standards as part of our ‘whole house’ methodology.


Insulation

External wall insulation (EWI) is a way of improving the thermal efficiency of solid-walled and non-traditionally-built homes. Instead of insulating within wall cavities, EWI involves adding a layer of insulation material to the external walls of a building. This insulation layer is then covered with a protective and decorative rendering system.

EWI helps to reduce heat loss, regulate internal temperatures, and enhance the overall building envelope. EWI is commonly used in both new construction and retrofitting projects to upgrade the energy performance of buildings while also enhancing their durability and aesthetics.

External wall insulation (EWI) in the UK offers several key benefits, including:

Improved Energy Efficiency

One of the primary benefits of external wall insulation is its ability to significantly improve the energy efficiency of a building. By adding a layer of insulation to the exterior walls, EWI helps to reduce heat loss, thereby decreasing the amount of energy needed to heat the building. This can lead to lower heating bills and a reduced carbon footprint, contributing to efforts to combat climate change and meet energy efficiency targets.

Enhanced Thermal Comfort

EWI can also improve thermal comfort within the building by helping to maintain a more consistent internal temperature. By reducing heat loss through the walls, EWI can eliminate cold spots and drafts, creating a more comfortable living or working environment for occupants. This can lead to increased productivity, improved well-being, and a better overall experience for building users.

Protection and Maintenance

In addition to improving energy efficiency and thermal comfort, external wall insulation can also help to protect the building fabric and extend its lifespan. By providing an additional layer of protection against the elements, EWI can reduce the risk of damage from weathering, moisture ingress, and other environmental factors. This alongside appropriate ventilation measures can help to prevent issues such as dampness, mold growth, and structural deterioration, ultimately reducing the need for costly repairs and maintenance over time.

Overall, external wall insulation offers a range of benefits for buildings in the UK, including improved energy efficiency, enhanced thermal comfort, and increased protection and maintenance of the building fabric. These benefits make it a popular choice for retrofitting existing buildings and improving the performance of both residential and commercial properties.