Professional Cavity Wall Insulation Removal
If your Cornwall property is suffering from damp patches, cold internal walls, mould or survey concerns linked to failed cavity wall insulation, Countrywide Insulation provides a specialist cavity wall insulation removal service tailored specifically to Cornwall homes.
We are a national premium insulation removal and property restoration company, delivering expert cavity extraction throughout Cornwall and surrounding areas. Using industry-leading extraction equipment and comprehensive cavity diagnostics, we remove failed insulation safely and completely, restoring the performance of your walls and protecting the fabric of your home.
Whether your insulation is saturated, incorrectly installed, breaking down, or causing cold bridging, we offer a total removal package backed by experience, technical skill and full reporting.
Why So Many Cornwall Homes Need Cavity Wall Insulation Removal
Cornwall has one of the UK’s highest rates of cavity wall insulation issues due to:
1. High Rainfall & Driving Wind
Cornwall experiences persistent wet weather and wind-driven rain, which can saturate cavity insulation, especially fibre, wool or urea-formaldehyde foam.
2. Older Brick & Masonry Construction
Many homes built from the 1930s to the 1980s were retrofitted with insulation later in life, often without suitable moisture barriers or cavity ventilation.
3. Poor or Incomplete Installation
Rushed install work often leaves voids, blockages or overfilled sections, causing damp transfer from the outer leaf to the inner wall.
4. Survey Restrictions & Mortgage Issues
More Cornwall properties are failing mortgage surveys due to historic insulation, leading homeowners to remove it before selling.
If damp, cold walls, black mould or blown plaster have started to appear, the insulation inside your cavity may be contributing to the problem.
Countrywide Insulation can diagnose the issue and provide a clear route to full recovery.
Costs of Cavity Wall Insulation Removal in Cornwall
The cost depends on insulation type, property size and cavity condition, but most Cornwall projects fall within:
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£1,500 – £3,500 for standard homes
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£4,000 – £7,000+ for large or complex properties
This includes:
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Full removal
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Cavity cleaning
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Diagnostic report
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Specialist equipment & labour
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Waste disposal
We offer free surveys and transparent quotations with no obligation.
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Our Premium Cavity Extraction Process
Countrywide Insulation delivers a highly structured removal method to ensure your cavity walls are left clean, dry and functional.
1. Detailed Property Survey
We begin with a full cavity inspection, assessing:
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Moisture levels
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Insulation type
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Areas of saturation
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Thermal anomalies
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Ventilation performance
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Any signs of structural moisture
We use borescopes, thermal imaging cameras and moisture meters for accuracy.
2. Drill Pattern Planning & Access Setup
We establish a controlled drill pattern designed to unlock the cavity efficiently without unnecessary disturbance to your masonry.
3. High-Powered Vacuum Extraction
Using industrial extraction equipment, we remove:
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Damp fibre insulation
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Urea-formaldehyde foam
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Polystyrene beads
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Debris, rubble & historic waste
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Blockages restricting ventilation
4. Full Cavity Clearance
We continue the extraction until every section of the cavity has been cleared. Partial removal is never acceptable.
5. Post-Removal Inspection & Report
We document the results using photos and moisture readings, providing:
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Proof of full extraction
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Moisture diagnostics
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Recommendations for further treatments if necessary
Problems Failed Cavity Wall Insulation Can Cause
Countrywide Insulation regularly removes failed insulation, causing:
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Interstitial condensation
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Mould and mildew growth
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Damp staining and blown plaster
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Internal wall coldness
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Rotten skirting boards
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Survey refusal or valuation drop
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Mortgage delays
Cornwall’s moisture-heavy climate intensifies all these issues.
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Additional Services Available in Cornwall
Countrywide Roofing and Insulation also offers a wide range of professional services designed to improve your property’s comfort, efficiency, and long-term value:
Spray Foam Insulation Removal
We safely remove both open-cell and closed-cell spray foam from roofs and loft spaces, using specialist techniques that protect your property. With over 2,000 successful removals completed and a 100% success rate, our team ensures a clean, thorough, and mortgage-compliant result every time.
Loft Insulation (Knauf Mineral Wool)
Once any issues within the loft or cavity are resolved, we install high-quality Knauf mineral wool insulation that meets modern building-control standards. If your existing insulation is outdated, damaged, or incorrectly installed, we also provide full removal and professional reinstatement to maximise thermal efficiency.
Roofing Services
From minor repairs to complete roof overhauls, we deliver a full spectrum of roofing solutions. This includes tile replacement, re-roofing, installation of breathable membranes and battens, timber and structural repairs, chimney maintenance, as well as Fascia, Soffits & Guttering upgrades. Our team ensures long-lasting durability and improved overall roof performance.
Exterior Painting
Our experienced exterior painting specialists provide high-quality finishes that refresh and protect your home’s façade. Using durable, weather-resistant coatings, we enhance your property's kerb appeal while adding an extra layer of protection against the elements.
Book Your Cavity Wall Insulation Removal in Cornwall
If you suspect your cavity insulation has failed, or if a surveyor has raised concerns, contact Countrywide Insulation today.
We provide:
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Free surveys
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Fixed quotations
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Expert diagnostics
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Guaranteed cavity clearance
Request your survey now and protect your home from further damp or structural issues.
Call us: 0808 134 2352
Email:
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