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External solid wall insulation

Row of detached brick houses in the UK ideal for external solid wall insulation to improve thermal efficiency and reduce heating costs

External solid wall insulation can dramatically improve comfort, reduce heat loss and transform the look of older UK homes. This guide explains how it works, what it costs and what to check before you insulate.

External wall insulation grants – Guide

Everything you need to know about funding for external wall insulation (EWI) in the UK: eligibility, ECO4, the Great British Insulation Scheme (GBIS), application steps, costs, savings and expert tips.

External wall insulation cost – Calculator

Clear, UK‑specific pricing with cost per m², full‑project examples by property type, savings and payback, plus a step‑by‑step budgeting checklist. Built to help you compare quotes like‑for‑like and avoid surprises.

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

UK house during external wall insulation with EPS boards — window reveals visible

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 […]