External Wall Insulation
External wall insulation is an effective way to improve a property’s energy efficiency, comfort, and appearance. AEG Construction provides professionally designed and installed external wall insulation systems that reduce heat loss, lower energy bills, and protect the building fabric for the long term.
By fixing a layer of insulation to the outside of a property and finishing it with a durable render or cladding system, EWI creates a continuous thermal barrier around the home. This approach significantly improves thermal performance without reducing internal living space.
What Is External Wall Insulation?
External wall insulation involves attaching insulation boards to the exterior walls of a property and covering them with a protective finish such as render, cladding panels, brick slips, or textured coatings.
The finished surface can be smooth, painted, textured, tiled, pebble-dashed, or panelled, allowing homeowners to refresh the appearance of their property while improving energy efficiency.
PAS 2035-Aligned Ventilation Design
AEG Construction delivers ventilation design in line with PAS 2035, ensuring systems are properly specified as part of a whole-house retrofit approach. Each property is assessed to understand airflow, moisture risks, and occupancy needs before recommendations are made.
Where required, a qualified Retrofit Coordinator oversees ventilation design and integration with other energy-efficiency measures, ensuring compliance, safety, and long-term performance.
Can External Wall Insulation Be Installed on Cavity Walls?
Cavity walls should normally be insulated using cavity wall insulation as the primary solution. Installing EWI over cavity walls is unusual, generally unnecessary, and rarely cost-effective.
Funding for external wall insulation is typically not available where cavity wall insulation already exists or is feasible. AEG Construction checks wall construction type and existing insulation before recommending the most appropriate and cost-effective insulation solution for your property.
AEG Construction Installation Process
Free Property Assessment
A no-obligation home visit to assess suitability, current energy performance, wall construction type, and potential insulation or upgrade opportunities available.
Wall Construction and Condition Survey
Detailed inspection identifying wall type, structural condition, existing defects, moisture issues, and suitability for external wall insulation systems.
Funding or Finance Eligibility Check
Comprehensive review confirming available grants, government schemes, loans, or finance options to reduce or eliminate upfront installation costs.
System Design and Specification
Bespoke insulation system designed to meet your property's specific needs, building regulations, thermal performance targets, and aesthetic preferences.
Professional Installation
Experienced, qualified installers fit manufacturer-approved systems safely, efficiently, and to certified PAS 2035 and building regulation standards.
Quality Inspection and Handover
Final quality checks completed, comprehensive documentation provided, manufacturer guarantees issued, and system performance verified for complete peace of mind.
Funding & Grants for External Wall Insulation
- External wall insulation may be supported through government energy-efficiency schemes, the Warm Homes Local Grant, and other regional or local authority programmes.
- Grants may cover part or all of the installation cost depending on scheme rules and eligibility.
- Eligibility depends on property type, EPC rating, and household circumstances including income and benefits.
- Some local authority schemes offer blended funding combining multiple sources for comprehensive coverage.
- AEG Construction manages eligibility checks, technical surveys, and grant applications maximizing available support.
Can External Wall Insulation Be Free?
In some cases, yes. Certain grant-funded schemes may fully cover installation costs, particularly local authority programmes targeting fuel poverty and vulnerable households.
However, most grants contribute toward the cost rather than covering it entirely. Partial funding typically ranges from 50-80% depending on scheme rules and household eligibility criteria.
AEG Construction helps homeowners access the most suitable funding routes or arrange affordable finance options bridging any remaining costs, making external wall insulation accessible and affordable for qualifying properties.
Key Benefits of External Wall Insulation
- Reduces heat loss and lowers heating costs by up to 45% through comprehensive thermal envelope improvement.
- Improves indoor comfort and warmth by eliminating cold spots and maintaining consistent temperatures throughout.
- Enhances weatherproofing and sound resistance protecting against rain penetration while reducing external noise intrusion.
- Fills cracks and gaps, reducing draughts creating airtight building fabric that prevents cold air infiltration.
- Increases property value and marketability through improved EPC ratings and enhanced curb appeal.
- Reduces carbon emissions significantly supporting household Net Zero contributions and environmental commitments.
Improve your home's comfort, curb appeal, and energy efficiency with professional external wall insulation from AEG Construction.
Contact AEG Construction today to arrange a free property assessment and explore available funding or finance options tailored to your property and circumstances.