Case Study: External Wall Insulation and Silicone Render in Yatton
Location: Yatton, North Somerset
Service: Installation of 90mm External Wall Insulation (EWI) system with silicone render finish
System Used: PRB 90mm Expanded Polystyrene (EPS) Insulation Boards + Silicone Render (10-Year Guarantee)
The Challenge – Improve External Walls and Save Energy
Our client in Yatton wanted to improve the appearance, thermal efficiency, and value of their home. The existing external walls were dated and poorly insulated, leading to rising heating bills and unnecessary heat loss.
They asked us about installing external wall insulation that would reduce energy bills, improve energy efficiency, and give the property a modern new look.
The Process – Adding External Wall Insulation to Solid Walls the Right Way
As with all our external solid wall insulation projects, we began by protecting exterior driveways, floor area, windows, and doors before setting up scaffolding.
We fitted 90mm EPS insulation boards (expanded polystyrene) using adhesive and secure external fittings. This insulation system was reinforced with mesh and basecoat for strength, meeting building regulations for durability and performance.
To complete the job, we applied a silicone render finish. This top layer creates weather resistance, prevents water ingress, and reduces condensation and staining. It also helps prevent damp problems and improves sound resistance while keeping the external surface looking fresh.
The full render system was installed with a 10-year guarantee, backed by expert advice and quality materials.
The Benefits – Save Energy, Improve Efficiency, and Increase Thermal Performance
The transformation delivered exactly what the client wanted. The house now looks modern, clean, and bright. More importantly, the insulation fitted to the solid walls made an immediate difference in thermal performance, reducing heat lost and improving comfort.
With external insulation in place, the client noticed reduced heating bills straight away. The project shows how adding insulation to solid masonry walls or stone walls not only improves appearance but also supports whole-house energy efficiency.
Thinking About External Insulation?
Whether your property has solid walls, cavity walls, or you’re considering internal wall insulation, upgrading with external wall insulation and render can transform both look and performance.
If you want to cut heating costs, meet modern standards, and get peace of mind with a guaranteed system, contact Webster SRS today. Ask us about planning permission, financial support, and the best insulation materials for your home. Contact Webster SRS today.
