Cavity Wall Insulation in Cheshire & North West
Cut heat loss through your walls by up to 35% — save up to £410 a year.
Trustmark-registered installers based in Nantwich. Free survey, honest advice, 25-year guarantee.
35%
Less heat lost
1,200+
Homes insulated
25yr
Guarantee
Fitted in a day
Most jobs are done in a day — loft and cavity insulation often in just a few hours.
25-year guarantee
Insurance-backed and TrustMark-registered, for total peace of mind long after we leave.
Grants handled for you
We check your eligibility and handle all the ECO4 and GBIS paperwork on your behalf.
Is My Home Suitable?
Most homes built from the 1930s onwards have cavity walls, and semi-detached and terraced properties are typically good candidates. We survey every home before quoting, free of charge, and we’ll tell you honestly if insulation isn’t right for your property.
May not be suitable if:
- Damaged brickwork or pointing
- Unresolved damp
- Severe wind-driven rain exposure
- Cavity narrower than 50mm
- Rubble or debris in the cavity
How It Works
Every project starts with a thorough survey — checking brickwork, cavity width, damp and ventilation — before we recommend any work. Installation itself is quick and happens entirely from outside, so there’s minimal disruption inside your home.
Why It's Worth It
Lower energy bills
Hold onto more heat and rely less on your heating — save up to £410 a year.
Even, comfortable rooms
No more cold spots or icy walls.
Less condensation
Warmer walls mean less risk of damp and mould.
A quieter home
The cavity fill also helps block outside noise.
Better EPC rating
Good for property value, and for meeting landlord energy efficiency standards.
Why choose us
Why Insul8 is the right choice for your home
Accredited Installers
TrustMark-registered and BBA-approved teams, so every job meets the highest standards.
Honest, No-Pressure Advice
Free surveys and fixed-price quotes. If insulation isn’t right for your home, we’ll tell you.
Grants That Cut the Cost
Most of our work is fully or partly funded through government schemes like ECO4 and GBIS — and we handle all the paperwork for you.
A 25-Year Insurance-Backed Guarantee
Every installation is protected for 25 years, so you’re covered long after we’ve left. With a local Cheshire team and accredited methods, your warmer, cheaper-to-run home is in safe hands.
Already Insulated but Still Cold or Damp?
That usually points to a failed or poorly fitted install. We offer full removal and replacement — old insulation out, cavity cleaned, refilled properly.
FAQs
No — solid walls, narrow cavities, damp or damaged brickwork can rule it out. We check first, always.
Not if installed correctly in a suitable home — exactly what our survey checks for.
Yes — 25 years, insurance-backed, covering workmanship and materials.
Usually 2–4 hours, all from outside.
We remove it, clean the cavity, and re-insulate properly.
Nantwich-based, covering Cheshire, Greater Manchester, Shropshire and Staffordshire.
Speak to the experts of cavity wall insulation
Send a message
Contact details
Serving Cheshire & The North West · Mon–Fri, 8am–6pm