Cavity Wall Insulation in South Wales
Reduce heat loss, lower energy bills, and warm cold rooms - with a certified, water-repellent EPS bonded bead system. Free, no-obligation technical inspection.
- 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 inspect first. We'll tell you if cavity insulation isn't right for your property.
Independent assessment - no pressure, no quote you didn't ask for.
Up to 35% less heat loss
Unfilled cavity walls are one of the biggest sources of heat loss in UK homes. The right insulation closes that gap.
Lower energy bills, year-round
A properly insulated cavity reduces the energy needed to heat your home - savings that compound every winter.
Certified, guaranteed, documented
PAS 2030 installation, 25-year CIGA guarantee, and insurance-backed warranty as standard.
Accredited & Trusted
Why Cavity Wall Insulation Matters
Up to 35% of heat escapes through uninsulated walls
Unfilled cavity walls are one of the biggest sources of heat loss in UK homes. That means higher energy bills and rooms that never feel warm enough.
Rising energy costs make insulation more valuable than ever
With energy prices continuing to increase, reducing heat loss through your walls is one of the most effective ways to lower your heating costs.
Cold walls can lead to condensation and damp
When warm air meets a cold wall surface, moisture forms. Over time this can lead to mould growth and damage to decoration.
How Do We Extract Cavity Wall Insulation?
Most homes built after the 1920s have two layers of brickwork with a gap (cavity) between them. Cavity wall insulation fills that gap with an insulating material, reducing the amount of heat that passes through your walls. We use EPS bonded beads - small polystyrene beads coated in adhesive that bond together inside the cavity, creating a continuous insulating layer that won't slump or settle over time.
How It Works
Technical Inspection
We visit your property to assess wall construction, cavity width, exposure level, and suitability. This determines whether insulation is appropriate and which system to use.
Clear Quotation
You receive a written quote based on the inspection findings. No hidden costs. No obligation to proceed.
Certified Installation
Our PAS 2030 certified team installs the insulation from outside your property. Most homes are completed within a single day with minimal disruption.
Guarantee & Aftercare
You receive a 25-year product guarantee, insurance-backed warranty, and full installation documentation. We remain available for any questions after completion.
Why EPS Bonded Beads?
Independent Assessment, Certified Delivery
We inspect your property to determine what it needs - not to sell you a product. If cavity wall insulation isn't suitable, we'll tell you. All installations are delivered under PAS 2030 and registered with CIGA, giving you independent protection and long-term peace of mind.
Loved By Homeowners, Trusted by Experts
Here is what our customers have to say:
"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"
Liz S
Bridgend · February 2025
"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!"
Richard W
Cardiff · November 2025
Is Cavity Wall Insulation Right for You?
Your home was built after the 1920s with cavity walls
You notice cold walls or rooms that are hard to heat
Your energy bills feel higher than they should be
You see condensation forming on internal wall surfaces
Your property has never had cavity wall insulation
Previous insulation was removed and needs replacing
What's Included
Pre-installation technical inspection
EPS bonded bead insulation material
Specialist injection installation
Post-installation quality check
Building regulations certificate
25-year CIGA guarantee registration
Insurance-backed warranty documentation
Ongoing aftercare support
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.
Have questions? We're here to help.
Speak to a surveyor directly - no sales pitch, no obligation.
Frequently Asked Questions
Book Your Free Cavity Wall Inspection
Complete the form and we'll arrange your free, no-obligation inspection. Or call 0800 009 2992.