Resolve persistent damp issues
Remove the failed material causing moisture transfer through your walls.
Cavity Wall Insulation Removal in South Wales
If your cavity wall insulation has failed, we extract the old material and replace it with a certified system that works.
Specialist extraction equipmentDiagnostic inspection firstEPS bonded bead re-fill
- PAS 2030 Certified Installations
- 25-Year Guarantee
- Insurance-Backed
- Free Inspection
- No Obligation
Get Started
Get a Free Quote
Complete our quick form and we'll arrange your free, no-obligation inspection to assess your property and recommend the right solution.
We help homeowners across South Wales understand their insulation and take the right next steps - whether that's cavity walls, loft insulation, or upgrading an existing system.
Free Technical Inspection
We assess your current insulation to determine exactly what your property needs - no cost, no obligation.
Tailored Recommendations
Every property is different. We recommend the right insulation based on your home's construction, condition, and exposure.
PAS 2030 Certified Installations
Installed by certified professionals with 25-year guarantees and insurance-backed warranties as standard.
Accredited & Trusted
How It Works
1
Diagnostic Inspection
We inspect your property to identify the existing fill type, assess moisture levels, and determine whether extraction is the right course of action.
2
Extraction Plan & Quote
You receive a written plan explaining what needs to happen and a clear quote. No obligation to proceed.
3
Extraction & Re-Fill
Failed material is removed using specialist vacuum equipment. The cavity is then re-filled with EPS bonded beads under controlled conditions.
4
Guarantee & Documentation
You receive a 25-year product guarantee, insurance-backed warranty, and full completion records including before-and-after documentation.
When Cavity Wall Insulation Fails
Damp problems linked to existing insulation
Some older cavity fill materials can absorb moisture and transfer it to your internal walls. This causes damp patches, peeling paint, and mould growth.
Cold walls despite having insulation
If insulation has slumped, settled, or degraded over time, it may no longer provide effective thermal protection. You may notice cold spots or uneven room temperatures.
Previous insulation installed incorrectly
Not all installations follow best practice. Poorly installed cavity insulation can cause ongoing issues that worsen over time.
Ready to get started?
Free inspection, no obligation, clear next steps.
What Is Cavity Insulation Extraction?
Cavity insulation extraction involves mechanically removing failed or unsuitable insulation material from your wall cavity using specialist equipment. The material is extracted through small holes drilled in the external brickwork. Once the cavity is clear, it can be left empty or re-filled with a suitable system. We re-fill using EPS bonded beads - a water-repellent, BBA-certified material designed to perform in exposed locations.
Why Extract and Replace?
Removes the root cause of damp
If your cavity fill is bridging moisture, removing it stops the problem at source - rather than treating symptoms on the inside.
Restores thermal performance
A fresh EPS bonded bead fill provides consistent, reliable insulation designed to maintain performance and resist moisture.
Controlled, external process
Extraction is carried out from outside your property using industrial vacuum equipment. There's no disruption inside your home.
Documented from start to finish
You receive a clear record of what was found, what was removed, and what was installed - including full guarantee documentation.
Signs Your Cavity Insulation May Have Failed
Damp patches appearing on internal walls
Mould growth in rooms that were previously dry
Cold walls even though insulation is present
Peeling paint or wallpaper on external-facing walls
Insulation was installed more than 15 years ago
A previous inspector has recommended extraction
What's Included
Pre-extraction diagnostic inspection
Mechanical cavity extraction
Cavity clearance verification
EPS bonded bead re-fill (if required)
PAS 2030 compliant installation
25-year CIGA guarantee
Insurance-backed warranty
Full documentation and aftercare
Key Benefits
Restore proper thermal insulation
Replace inefficient fill with a modern, certified system.
No internal disruption
All extraction and installation work is carried out from outside your property.
Full documentation and guarantees
Clear records of what was done and why, with long-term warranty protection.
Have questions? We're here to help.
Call us or send us an enquiry.
Transparent Pricing
Every quote is built around your property - not a price list.
No guesswork. No off-the-shelf packages. We measure, assess, and quote based on your home's actual floor area and construction type - so you only pay for what's needed.
Ready to get your quote?
Get in touch and we'll arrange a visit. We'll measure up, assess your property and give you a clear, itemised quote - calculated on your actual floor area.
Diagnosis Before Remediation
We don't assume extraction is needed. Our inspection determines the root cause first. If the problem is not related to cavity insulation, we'll tell you. All extraction and re-fill work is carried out under PAS 2030 with independent guarantees.
Loved By Homeowners, Trusted by Experts
Here is what our customers have to say:
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"Recently had loft insulation, kitchen fan and new radiator controls fitted. All work completed within 2 days to a high standard. Workmen were fast, efficient, polite and helpful. Similarly whenever I spoke to their office staff they were both helpful and polite. I was messaged prior to each job informing me of the name and eta of workmen. Would not hesitate to recommend."
SD
Stephen D
Cardiff · January 2026
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"I cannot praise this company too highly. From first contact to completion of the work the whole experience was perfect. People turned up when they were supposed to and were all friendly, good-humoured and respectful - and they knew what they were doing. All three teams that carried out the work were well coordinated and efficient. And they all cleared up after them! Great coordination between the office and the inspection and work teams. If only every company was like this... I wish them all the best!"
RW
Richard W
Cardiff · November 2025
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"We had cavity wall insulation done which has made a big difference to our house. Our rooms were cold and we had some mould in corners of the rooms. Since having it done there hasn't been any. House warms up quicker and stays warmer longer. So glad we had it done and it was quick and easy. I would recommend them to anyone"
LS
Liz S
Bridgend · February 2025
Frequently Asked Questions
Book Your Free Extraction Inspection
Complete the form and we'll arrange your free, no-obligation inspection. Or call 08000 092992.