Experts in
Cavity Wall Insulation

Engineered specifically for optimal thermal performance, Knauf Supafil 34 delivers superior, long-lasting energy savings without the risks associated with bonded beads. Non-combustible, eco-friendly, and professionally blown to fill every cavity perfectly without settling.

Warning Signs

Detecting issues early saves thousands in utility bills and prevents permanent structural decay. Watch out for these three common indicators.

Toxic Mould & Mildew

Dark spots and persistent mould spores popping up around room corners, skirting boards, and window sills. This is caused by severe moisture trapped in failing cavity insulation.

Cold Spots & Drafts

Noticeable drafts or cold patches across internal brickwork. This happens when insulation inside the cavity slumps over time, leaving massive gaps at the top of your walls.

Peeling Paint & Damp

Blistering paint finishes, peeling wallpaper adhesive, or dark damp patches. These visual alerts signal that external moisture has saturated the insulation inside your cavity.

Maximum Thermal Performance

Slash Your Energy Bills

Discover the engineering power of Knauf Supafil 34. This premium virgin blowing wool insulation is meticulously designed to eliminate thermal bridging, locking expensive heated air inside your living spaces and permanently reducing energy consumption.

Calculate Your Savings

Eliminate Cold Spots

Unlike traditional insulation rolls, Supafil 34 micro-fibers fill every corner, gap, and complex cavity around piping or wiring. This ensures 100% seamless coverage with absolute zero drafts.

Retain Heat Energy

Featuring an exceptional thermal conductivity of 0.034 W/mK, Supafil 34 blocks heat loss during freezing winters and blocks outside heat during hot summers for sustained year-round comfort.

OUR SPECIALIST SERVICES

Advanced Cavity Wall Solutions

Comprehensive thermal diagnostics and premium insulation systems tailored for maximum property efficiency.

ENGINEERED PRECISION

Our 4-Step Installation Process

How we insulate your cavity walls with Knauf Supafil 34 — minimizing disruption while maximizing your home's thermal efficiency.

01 Site Survey

Endoscopic wall cavity depth checks and thermal imaging pinpoint precise structural insulation needs.

02 Precision Drilling

Small 22mm holes are cleanly drilled in a predetermined layout directly into the mortar joints.

03 Supafil 34 Injection

Knauf Supafil 34 is pneumatically blown into cavities, sealing every void to form a high-performance barrier.

04 Invisible Repointing

Holes are refilled using color-matched mortar matching your exact brick aesthetic and leaving no trace.

HIGH-PERFORMANCE BLOWING WOOL

Why Knauf Supafil 34?

Engineered for maximum thermal efficiency and safety, Supafil 34 represents the industry standard in premium glass mineral wool insulation.

Thermal Performance

0.034 W/mK

Exceptional low thermal conductivity ensures optimum heat retention, vastly reducing energy demands and building operating costs.

Non-combustible

Euroclass A1

Classified with the highest European standard for fire protection. Completely non-combustible, emitting no toxic smoke or flaming particles.

Sustainable & Durable

Eco-Friendly

Manufactured using up to 60% recycled glass with zero added chemical colorants. Settling-free design guarantees structural integrity for a lifetime.

What Our Customers Say

Don't just take our word for it. Discover how our thermal imaging and cavity wall insulation services are transforming homes.

"The cavity wall insulation made an immediate difference. Our heating bill dropped by 30% in the first month, and the team was incredibly clean and professional throughout the installation process."

Marcus Vance

"Stunning professional service. They used thermal imaging to show us the exact draft areas before starting, proving how much energy we were losing. Extremely thorough and informative."

Sarah Jenkins

"Exceptional clean-up and rapid execution. Our home holds heat so much better now. This team really understands modern home insulation standards and delivers on their promises."

David Thorne

EXCLUSIVE HOMEOWNER SCHEME

Get Your Free Cavity Audit

Identify energy loss, wall ties defects, or deteriorating insulation in minutes. Our expert technicians use precision thermal cameras to check your property.

Experts in Cavity Wall Insulation