External Wall Insulation
External Wall Insulation in Gloucester & Surrounding Areas
Improve Energy Efficiency with External Wall Insulation
County Rendering provides expert external wall insulation in Gloucester, Gloucestershire, and surrounding areas, helping homeowners improve energy efficiency, reduce heat loss, and enhance the external appearance of their property.
External Wall Insulation (EWI), also known as solid wall insulation, is installed on the outside of your property, creating a thermal barrier that keeps heat inside while protecting your building from the elements.
Our services include rolled loft insulation, foil insulation, loft boarding, loft ladders, new hatches, and ventilation improvements—tailored to suit your property and requirements.
Benefits of External Wall Insulation
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Why External Wall Insulation is Important
In a typical UK property, up to 65% of heat loss occurs through the walls. Installing external wall insulation significantly improves thermal performance, helping your home stay warmer for longer while reducing energy usage.
EWI systems typically add 70mm–100mm thickness to external walls, depending on the insulation used.
What is External Wall Insulation
External wall insulation involves applying:
- A layer of high-performance insulation boards
- A reinforced base coat with mesh
- A durable, weather-resistant render finish
The final layer is usually a silicone-based coloured render, providing both protection and a modern decorative finish.
Suitable Properties for EWI
External wall insulation is ideal for properties with solid walls, including:
- Older homes built before 1930 with solid brick walls
- System-built (concrete) properties from the 1930s–1980s
- Properties with timber or steel frame structures
Installation Timeframe
Most external wall insulation projects are completed within two to three weeks for an average-sized property. The exact timeframe can vary depending on the size of the building, the condition of the walls, and weather conditions during installation.
We provide a clear schedule before starting work and keep you informed throughout the process to ensure everything runs smoothly and efficiently.
Our External Wall Insulation Process
We follow a structured and professional installation process:
1. Property Survey
We carry out a full assessment to determine the most suitable insulation system.
2. Preparation
We prepare your property by:
- Protecting windows, doors, and surrounding areas
- Extending pipework and guttering where required
- Removing external fixtures such as alarms
- Preparing wall surfaces for installation
3. Installation
- Starter tracks are installed for alignment
- Insulation boards are fixed using adhesive and mechanical fixings
- Reinforced mesh and base coat are applied
4. Finishing
A high-quality silicone render is applied to provide a durable and attractive external finish.
Ready to improve your property’s energy efficiency?
Ready to improve your property’s energy efficiency?
County Insulation
Areas We Cover
Gloucester
Cheltenham
Stroud
Tewkesbury
Cirencester
Oxfordshire
Worcestershire
Bristol
Wiltshire
Frequently Asked Questions!
How long does rendering last?
Depending on the system used, rendering can last 20–30 years or more with proper installation and maintenance.
What is the best type of render for my property?
It depends on your needs and budget. Silicone render is ideal for modern, low-maintenance finishes, while sand and cement is a more traditional, cost-effective option.
Does external wall insulation really save energy?
Yes, external wall insulation significantly reduces heat loss, helping to lower energy bills and improve indoor comfort.
How long does a typical project take?
Yes, external wall insulation is especially effective for older properties and can greatly improve both efficiency and внешний appearance.
Do you work on commercial properties?
Yes, we provide services for both domestic and commercial projects.
Is your work guaranteed?
Yes, we use high-quality materials and systems that often come with manufacturer-backed guarantees for long-term peace of mind.
Do I need planning permission for rendering?
In most cases, no—but it may be required for listed buildings or properties in conservation areas.
How much does rendering cost?
Costs vary depending on the size of the property, materials used, and project requirements. Contact us for a free, no-obligation quote.