Cavity Wall Insulation
Stop losing heat
A typical semi-detached home recovers the install cost in 3–5 years.
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Cavity Wall Insulation
Stop losing heat
through your walls
Around 35% of household heat escapes through uninsulated walls. We fill the cavity in a day, with a 25-year CIGA guarantee.
- Up to £395 a year saved
- Done in a day
- 25-year CIGA guarantee
PAS 2030 / 2035
TrustMark Registered
5.0★ Google Reviews
Grant Funding Checked
25 yrWorkmanship-backed guarantee
PAS 2035Whole-house certified
5.0★From 25+ Google reviews
0%Finance available
The overview
What you're actually buying
The short version, then the detail. No fluff, no jargon - just the facts you need to decide whether this is right for your home.
Around 35% of household heat escapes through uninsulated walls. We fill the cavity in a day, with a 25-year CIGA guarantee.
Every install starts with a free home survey. We measure, photograph, and talk through how you actually use the space. You get a written, fixed-price quote - not a salesperson's estimate. If grant funding applies, we check eligibility before you sign anything.
On install day, one team turns up: surveyor, lead engineer, and apprentice. No subcontractors juggling diaries, no "the guys will be in touch". We tidy as we go, protect floors and furniture, and walk you through everything that's been done before we leave.
Afterwards, your paperwork is lodged with TrustMark and the relevant scheme provider, your EPC is updated where applicable, and you get one number to call if anything ever needs attention. That's it - no upsells, no surprise extras.
Up to £395 a year saved
A typical semi-detached home recovers the install cost in 3–5 years.
Done in a day
Most installs take 2–3 hours. No mess inside the house.
25-year CIGA guarantee
Independently backed by the Cavity Insulation Guarantee Agency.
Why it pays off
The benefits, in plain English
No jargon, no upsells. Here's what changes for your home after we finish the install - and why it adds up.
Up to £395 a year saved
A typical semi-detached home recovers the install cost in 3–5 years.
Done in a day
Most installs take 2–3 hours. No mess inside the house.
25-year CIGA guarantee
Independently backed by the Cavity Insulation Guarantee Agency.
Included as standard
One price.
Everything in it.
The quote you receive is the price you pay. No hidden extras bolted on after install, no scaffolding "surprises", no paperwork left for you to chase.
Free no-obligation home survey and fixed-price quote
PAS 2030 / 2035 certified design and installation
All materials, fixings, scaffolding and waste removal
Building control notification and certification
TrustMark lodgement and EPC update where applicable
Aftercare line and direct contact with your install lead
Why GLR
PAS 2030 / 2035 certified installs
One team handles the survey, the design, the install and the paperwork. No subcontractors, no handoffs, no surprises - and a real person on the phone if anything ever needs attention.
- Free pre-install cavity inspection with a borescope
- Bonded bead, mineral fibre, or polystyrene - we recommend what suits your wall
- TrustMark and CIGA registered
- Grant funding routes checked first (ECO4, GBIS)
- Reinstated render and matching mortar plugs
How it works
From quote to commissioned, sorted
Three clear stages. Fixed pricing after survey. We work around you, not the other way round.
01
Survey
Borescope check to confirm the cavity is empty, dry, and suitable. We rule out anything that would void the guarantee.
02
Install
Drill the mortar joints, inject the insulation, repoint. Outside-only work, no disruption inside.
03
Certify
CIGA guarantee issued, lodged with TrustMark, and sent to you with the EPC update if grant-funded.
The honest answer
Is this right for your home?
We'd rather tell you straight than push a sale. Here's where this works well, and where we'd want a longer conversation first.
Great fit if…
- Owner-occupied or landlord properties in England, Scotland or Wales
- Homes looking to cut running costs and improve EPC band
- Households that want one accountable team end-to-end
- Properties eligible for grant funding (we check first)
Worth a chat first if…
- Listed buildings or conservation areas - possible, but needs extra design
- Properties with unresolved damp or structural issues - fix first
- Off-grid / unusual fuel setups - give us a call, we'll talk it through
Real homes, real installs
Designed around your life, not the other way round.
We size every install to the home, the routine, and the energy use. One team. One number to call. You just carry on.
Start with a free assessmentCommon questions
FAQ
Can't see your question? Call us on 0124 463 8200 - we're happy to talk it through.
No. Injection holes are filled with matching mortar - you won't be able to see where we drilled within a week.
Warmer home, lower bills, done in a day.
Grant funding checked first. 25-year CIGA guarantee on every install.