External Solid Wall Insulation – Types, Costs and Best Systems [2025 Guide]

What Is External Solid Wall Insulation External solid wall insulation (EWI) is a system applied to the outside of a solid wall to improve its thermal efficiency.Unlike cavity wall houses, solid wall properties have no air gap – meaning they lose up to 45% of heat through the external walls. Installing an EWI system adds […]

External Wall Insulation in London – 2025 Costs, Materials and Benefits

What Is External Wall Insulation External Wall Insulation (EWI) is a system used to improve the thermal efficiency of buildings by adding insulation boards, mesh, primer, and render to the outer walls.In cities like London and Wembley, where many properties were built before modern insulation standards, EWI is one of the most effective ways to save energy […]

External Wall Insulation Thickness Guide (UK): 50mm vs 80mm vs 100mm

External Wall Insulation thickness is one of the most common questions homeowners ask. Should you choose 50 mm, 80 mm, or 100 mm? The answer depends on your house type, energy goals and budget. In this guide we’ll explain the differences, show you how to measure, and give clear recommendations for UK homes. In a […]

Best External Wall Insulation in the UK – Comparison & Buying Guide [2025]

External wall insulation can reduce your heating bills by £200-700 annually while increasing property value by 5-10%. Our comprehensive 2025 guide compares the best EWI materials, costs, and certified installers across the UK.