South East Coverage
25-Year Guarantee
20 Years Experience
CERTIFIED CORKSOL APPROVED INSTALLERS
ProGuard Exteriors specialise in ultra-thin, breathable internal wall insulation using Corksol spray-applied coatings—designed for comfort, performance, and moisture control in solid wall and heritage properties.
Corksol is a next-generation natural cork solution applied directly to internal walls to enhance thermal insulation, regulate moisture, and reduce noise—all without the disruption or thickness of traditional insulated plasterboard or stud systems.
Compatible with multiple finishes, Corksol can be left as a decorative surface, finished with a smooth plaster skim, or painted using vapour-open emulsions. Hybrid systems are also available, combining Corksol insulation with specialist breathable finishing plasters for enhanced thermal and aesthetic performance.
Ideal for older buildings, small rooms, or areas prone to condensation, our internal spray cork insulation provides lasting benefits with minimal loss of space or aesthetic compromise…
Ultra-thin thermal insulation with just 8 to 12mm build-up to preserve room size
Breathable and moisture-regulating to prevent condensation and mould
Seamless spray application applied directly onto existing plaster or masonry
Acoustic comfort with natural sound dampening qualities
Eco-friendly and sustainable made from 100% natural cork
Perfect for solid walls, heritage properties, curved surfaces, and small or awkward spaces, Corksol is the smart modern alternative to bulky internal insulation boards. Every installation is carried out by our Corksol Approved Applicators with attention to detail, clean finishes, and full aftercare.
Book your free survey today and discover how Corksol internal insulation can improve warmth, comfort, and moisture protection—without compromising space or character.
Internal Wall Insulation
Traditional internal wall insulation systems such as insulated plasterboard or studwork can reduce room size, trap moisture, and cause disruption during installation. Corksol offers a modern, ultra-thin alternative that solves these problems.
Spray-applied directly to internal surfaces, Corksol creates a continuous, breathable layer just 8 to 12mm thick. It improves thermal performance without compromising space, appearance, or the health of your walls. Especially suited for solid walls, heritage properties, and rooms affected by condensation, Corksol regulates humidity naturally and helps prevent mould growth.
Unlike rigid boards, Corksol is flexible and ideal for curved walls, chimney breasts, and other awkward spaces. The seamless coating eliminates cold bridging and can be finished with plaster, paint, or decorative textures to suit any interior.
Made from 100% natural cork, Corksol is fire-resistant, hypoallergenic, and one of the most sustainable insulation materials available. It also improves acoustic comfort, making it a smart solution for both thermal and sound insulation.
Upgrade your interior walls with breathable, space-saving Corksol insulation. Request your free quote today and discover the benefits of natural cork for comfort, efficiency, and indoor air quality.
A staggering 35% of heat escapes through the walls of an uninsulated property, resulting in freezing walls and chilly rooms. Many homeowners attempt to combat this issue by cranking up their heating, which can lead to exorbitant costs.
When heating a home with solid walls, warm indoor air often meets cold internal surfaces, leading to condensation. Over time, this moisture builds up due to temperature fluctuations, causing mould and damp problems. Our internal spray cork wall insulation tackles this issue by creating a breathable, thermally insulating barrier that helps regulate moisture and maintain a healthier indoor environment…
Eco-Friendly & Sustainable
Cork is a renewable, eco-conscious insulation material harvested from the bark of cork oak trees, making it a responsible environmental choice.
Improved Energy Efficiency
Spray cork offers excellent thermal insulation, reducing heat loss through walls and helping regulate the internal temperature of your home.
Save Money on Heating Bills
Naturally resistant to moisture, damp, and mould, cork helps protect your home from weather damage, UV rays, and other external factors, lowering maintenance costs.
Reduce Noise Pollution
Cork’s natural sound-absorbing properties help reduce external noise, such as traffic and neighbours, creating a quieter living environment.
Our spray cork insulation installation experts are fully insured and accredited, and approved applicators of CorkSol, boasting over 20 years of experience. We design custom residential spray cork packages for homeowners throughout South East England.
Wherever you are in our service area you can trust ProGuard Exteriors to enhance and protect your property with expert care and quality workmanship. If you’re considering internal wall insulation reach out to our team for a free, no-obligation spray cork insulation quote today…
Why Choose Proguard Exteriors?
ProGuard Exteriors are trusted insulation and rendering specialists offering guaranteed, accredited services across the South East…
Over 20 Years Of Experience
Benefit from our extensive industry knowledge built over 20+ years of hands-on experience
Up To 25 Years Guarantee
Enjoy peace of mind with our long-term guarantees of up to 25 years
Wide Coverage Across South East England
Serving a broad range of areas throughout South East England with local teams ready to assist
Free Survey, Quote & Expert Advice
We offer free on-site surveys, quotes, and tailored expert advice with no obligation
Highly Recommended By Previous Customers
Trusted and praised by homeowners and businesses for professionalism, quality, and outstanding service
All-In-One Insulation & Rendering Packages
Streamline your project with comprehensive, all-in-one solutions for insulation and exterior rendering
Endorsed Standards & Protection
Trusted for meeting rigorous industry standards, with extra peace of mind from independent protection schemes
Manufacturer Approved
Trusted by leading insulation and rendering system manufacturers for our proven quality and expertise
Residential & Commercial Tenders
Equipped to handle both residential jobs and large-scale commercial or public sector tenders
SERVING THE SOUTH EAST
ProGuard Exteriors proudly serves the whole of South East England, delivering expert solutions in spray cork coatings, external wall insulation, rendering, wall coatings, and commercial facade renovation. With our local knowledge and specialist expertise, we provide tailored services for residential and commercial projects of all sizes.
25 YEARS GUARANTEE
ProGuard Exteriors stands behind the quality of our work, offering up to 25 years guarantee on our coatings and finishes. This long-term commitment provides peace of mind, ensuring your property remains protected, durable, and visually appealing for years to come.
20 YEARS EXPERTISE
With more than two decades of industry experience, ProGuard Exteriors brings seasoned skill and technical knowledge to every project. From modern insulation systems to decorative rendering and commercial facades, we consistently deliver professional, high-quality results.
ACCREDITED & FULLY INSURED
Our installers are fully insured and accredited by leading industry bodies. Whether working on residential rendering, external wall insulation, or large commercial projects, our highly trained team ensures reliable results with complete safety and compliance.
TRUSTMARK APPROVED
ProGuard Exteriors is endorsed by Trustmark and QualityMark Protection, guaranteeing that our services meet the highest industry standards. These recognitions provide assurance of quality, reliability, and professionalism across all our insulation and rendering solutions.
FREE QUOTES
ProGuard Exteriors offers free, no-obligation quotations for all spray cork, wall coating, insulation, and rendering projects. Whether you’re refreshing a home facade or upgrading a large commercial property, our experts are ready to help you achieve lasting protection and style.
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Registered Office: 4 Cromwell Court, New Street, Aylesbury, Bucks HP20 2PB
Registered in England and Wales No. 10352234 | VAT Number: 265 6002 17
enquiries@proguardexteriors.co.uk
03316 300 082
Monday to Friday 8:00am - 6:00pm / Weekends - Closed