South East Coverage
Up To 25-Year Guarantee
20 Years Experience
ProGuard Exteriors delivers specialist external wall coatings, spray cork systems, rendering, and exterior wall insulation throughout Stevenage and surrounding areas. We help homeowners improve thermal performance, safeguard their property, and achieve a fresh, modern exterior.
From established homes in Old Town and family properties in Shephall to larger detached houses in Great Ashby and newer developments across the town, we install tailored wall coating solutions designed to suit Stevenage’s diverse range of properties.
Our advanced breathable coatings are engineered to protect against moisture penetration, reduce heat loss, and restore tired external surfaces. The result is a more energy-efficient home with an attractive, low-maintenance finish.
Whether you are carrying out a full renovation, modernising your home’s appearance, or investing in long-term energy improvements, our wall coating systems deliver both practical and aesthetic benefits.
With its varied housing stock and exposure to year-round weather conditions, Stevenage properties can benefit significantly from modern exterior protection and insulation systems. Our experience ensures dependable results on every project.
Why Choose ProGuard Exteriors in Stevenage?
With more than 20 years of experience, a 25-year guarantee, and specialist installation expertise, ProGuard Exteriors provides trusted exterior wall solutions throughout Stevenage and Hertfordshire.
Our business is dedicated exclusively to external wall coatings and insulation. This specialist focus allows us to deliver exceptional workmanship, technical expertise, and finishes that are built to perform.
We install market-leading systems including CorkSol SprayCork and Andura wall coatings. These flexible, breathable solutions help protect your property while enhancing energy efficiency and appearance.
From your first enquiry through to project completion, we provide honest advice, responsive communication, and a smooth installation experience tailored to your needs.
We also help address problems such as damaged render, discoloured surfaces, condensation-related issues, and poor thermal performance, creating a cleaner and more durable exterior.
Choose ProGuard Exteriors for spray cork coatings, rendering, and external wall insulation in Stevenage. Request your quote today and invest in a smarter exterior solution.
How Our Stevenage Exterior Wall Coatings & Insulation Help You
Reduced Heat Loss: Improve energy efficiency and maintain a more comfortable indoor environment with advanced insulation systems.
Restoration of Tired Exteriors: Cover cracked render, faded finishes, and weathered surfaces with durable, long-lasting coatings.
Contemporary Kerb Appeal: Refresh your property with modern colours and textures designed to complement any architectural style.
Flexible Surface Protection: Our coating systems accommodate natural building movement, helping reduce the likelihood of future cracking.
Guaranteed Performance: Every installation is backed by a comprehensive 25-year guarantee for long-term confidence.
Multiple Applications: Spray cork can be applied to external wall insulation, flat roofs, conservatory roofs, internal walls, asbestos coverage, and black mould prevention.
ProGuard Exteriors proudly serves Stevenage and surrounding areas. We also offer external wall insulation, rendering, sprayed cork coatings, roof coatings, and commercial facade upgrades.
Whether you’re based in Stevenage, Hitchin, Letchworth Garden City, Welwyn Garden City, Knebworth, Baldock, Hertford, Hatfield, St Albans, or Ware, our expert service makes us your trusted choice for Stevenage spray cork and wall coatings.
Contact us today for a quote and professional exterior transformation across Hertfordshire and the South East. Including Stevenage, Hitchin, Letchworth Garden City, Welwyn Garden City, Knebworth, Baldock, Hertford, Hatfield, St Albans, Ware, and all surrounding areas.

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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