Greater London · TW3, TW4, TW5
Insulation Installers in Hounslow
Hounslow is our home borough — Stay Warm Insulation is based in TW4, so surveys here are the quickest to book. Hounslow, Heston and Cranford are a mix of post-war estates and 1930s suburban semis. Most properties here are cavity-walled, so the priority is usually loft top-ups, cavity-wall checks and suspended-floor insulation rather than EWI.
What this page covers
- • Local property types and which insulation suits them
- • What the work involves and how long it takes
- • Indicative costs and what affects them
- • Surrounding areas we cover
- • How to book a free survey
Insulation services we offer in Hounslow
Click through for detailed information on each service in your area.
External Wall Insulation in Hounslow
Insulating board and render system fitted to the outside of your home — the most thermally effective option for solid-wall properties.
Learn more →Internal Wall Insulation in Hounslow
Insulated boards fitted to the inside of external walls — ideal for listed buildings, flats, and properties where external changes aren't possible.
Learn more →Loft & Roof Insulation in Hounslow
From simple loft rolls to full warm-roof rafter systems — typically the cheapest and quickest insulation upgrade with the fastest payback.
Learn more →Floor Insulation in Hounslow
Suspended-timber and solid-floor solutions that eliminate cold draughts and reduce heat loss through the ground.
Learn more →Recent work in and around Hounslow
Real jobs, real prices — anonymised from our quote book.
Internal Wall Insulation in Hounslow →
We have installed internal wall insulation in Hounslow itself — a £7,470 IWI project in TW4, our home postcode. The Victorian terraces around the High Street and Isleworth are solid-walled, and because we are based in TW4, Hounslow surveys get our earliest slots and shortest lead times.
Loft & Roof Insulation in Hounslow →
Hounslow is where we're based, so loft surveys here typically get our earliest slots. Recent jobs on this side of London include a 35m² loft top-up in Greenford (UB6) for £4,580 in January 2026 and roof rafter insulation on a Richmond terrace (TW10) for £1,894 in June 2026. The 1930s semis across Heston and Cranford usually need a top-up from an old 100mm layer to the recommended 270-300mm — typically a one-day job.
Floor Insulation in Hounslow →
Stay Warm Insulation is based in TW4, so Hounslow, Isleworth and Feltham get the fastest survey slots we offer. The Victorian and Edwardian terraces around Hounslow High Street and Isleworth mostly sit on suspended timber floors — insulating between the joists from below (or lifting boards where there's no crawl space) stops the draughts these floors are known for. We have also completed internal wall insulation in TW4 itself.
How we work in Hounslow
A clear, honest, no-pressure process from first call to final sign-off.
Free survey
We visit your Hounslow property, measure up, and assess wall and roof construction.
Written quote
A clear fixed-price quote within 24 hours, broken down by labour, materials and any extras.
Installation
PAS2030-certified installation by our own trained team — no subcontractors.
Sign-off
Manufacturer-backed guarantee, TrustMark paperwork, and aftercare contact.
Free survey for Hounslow homeowners
Book a free, no-obligation survey of your Hounslow property and we'll send a clear, fixed written quote within 24 hours — PAS 2030:2023 certified, TrustMark registered, installed by our own trained team.
Get a free quoteFrequently asked questions
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Explore our insulation services
Detailed guides to each service, plus the full list of areas we cover across Greater London and the wider South-East.
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