Get Your Free External Wall Insulation Quote Today
Get your free external wall insulation quote
Answer a few quick questions and one vetted local installer will get back to you. It’s free, with no obligation.
External wall insulation wraps a thermal layer around the outside of your home, cutting the heat that escapes through solid walls - often the single biggest source of heat loss in older properties.
It works even harder alongside the rest of your home. Once your walls hold heat in, your heating runs less and a heat pump or boiler can be sized smaller - so every measure does more.
Eco Renovate isn’t an installer - we’re the free first step. We check your property against its real government EPC record, then introduce you to one vetted, insulation-experienced local installer.
Key benefits
Lower heating bills
Insulating your walls dramatically cuts the heat that escapes, so your heating runs less and you spend less keeping your home warm - typically £300-£700 a year.
A warmer, more comfortable home
External wall insulation keeps your internal wall surfaces warmer and removes cold spots and draughts, so your home feels warmer at the same thermostat setting and stays comfortable for longer after the heating goes off.
0% VAT on installation (currently, until March 2027)
External wall insulation on a residential property in Great Britain currently qualifies for 0% VAT under HMRC’s energy-saving materials relief, in place until 31 March 2027.
Can improve your home’s EPC rating
Wall insulation is one of the biggest factors in the government’s EPC methodology, so insulating solid walls can lift your rating - helping with mortgages, resale value and minimum-standard requirements.
Protects your walls and cuts damp
Because the insulation and render sit on the outside, your walls stay warmer and drier - reducing condensation and damp while giving the exterior a fresh, weatherproof finish.
Long-lasting and low-maintenance
A quality external wall insulation system is designed to last 25-30 years or more, with a durable render finish that needs little upkeep and protects the building fabric underneath.
What it typically costs
A typical home costs roughly £8,000-£15,000 for external wall insulation, though ECO4 and Great British Insulation Scheme grants can cover part or all of the cost for eligible households. Your final figure depends on:
- The size of your home and the total wall area to be covered
- Whether scaffolding and access equipment are needed
- The insulation thickness and render finish you choose
- Any prep work - repairs, pipework, or extending eaves and sills
- Whether you qualify for an ECO4 or Great British Insulation Scheme grant
- 0% VAT currently applies to qualifying insulation work until March 2027
From EPC check to finished work
We check your EPC
We start from your property’s real government Energy Performance Certificate, so the advice is based on your actual walls and heat loss - not a generic estimate.
Speak to your local installer
Based on your EPC and location, we match you to a single vetted, insulation-experienced local installer - never a list of firms chasing your details.
Installer assessment and fixed quote
The installer checks your wall construction, condition and access, then gives you a clear fixed quote - including any grant funding you qualify for.
Installation
Accredited installers fit the insulation boards and weatherproof render to the outside of your walls, typically over one to three weeks depending on the size of the property.
Updated EPC and ongoing savings
Once complete, your installer supports the paperwork and guarantees, and your warmer, better-insulated home starts saving on heating straight away.