About us
Insulation installers you can actually trust
Stay Warm Insulation Ltd is a PAS2030-19 and TrustMark certified insulation installer working across London and the South-East since 2017. We install external wall, internal wall, loft and floor insulation with our own trained team — no subcontractors, no hard sell, and a fixed written quote within 24 hours.
Who we are
We started Stay Warm Insulation in 2017 with a simple aim: do insulation properly, and explain it honestly. Too many homeowners had been sold the wrong measure for their property, or had work done badly by a subcontracted crew who were long gone by the time problems surfaced. We do it differently.
Every survey is carried out by someone who understands the building, not a salesperson chasing a target. We assess your wall construction, roof and floors, tell you which measures genuinely make sense — and which don't — and give you a clear, fixed, itemised quote. The work is then delivered by our own trained in-house team, so the people who quote the job are accountable for the result.
Over 500 installations later, we're rated 9.8 on Checkatrade and trusted across London, Kent and Surrey — from solid-wall Victorian terraces to 1930s suburban semis and listed period homes.
Certifications & accreditations
Insulation is only as good as the standard it's installed to. We hold the certifications that prove ours is done right — and that the guarantees behind it are real.
PAS 2030-19 certified
The government-mandated installation standard for retrofit insulation — independently audited.
TrustMark registered
Government-endorsed quality scheme (licence 2259022), so every job meets the required standards.
Competent Person Scheme (CPS)
Registered for External Wall Insulation, allowing us to self-certify building-regulation compliance.
Licensed Licata EWI installer
Approved to install Licata external wall insulation systems to manufacturer specification.
Manufacturer-approved
Approved installer schemes with Kingspan, ROCKWOOL, SWIP, STEICO and Celotex.
£5m public & products liability
Fully insured for every project, large or small, for complete peace of mind.
Every job is guaranteed
- 10-year manufacturer’s warranty on every installation
- 25-year Insurance Backed Guarantee (IBG)
- Building Regulation Certificate issued at no cost to you
- All work delivered by our own trained in-house team — never subcontracted
What we install
Where we work
Across Greater London, Kent and Surrey — from Croydon and Bromley to Richmond, Kingston, Harrow and out to Sevenoaks and Maidstone. See all areas we cover →
Get a free quote
Leave your details and we'll call you back within one working day to arrange a free survey.