Benefit from 15+ years of award‑quality insulation, trusted accredited installers, and expert service from start to finish.
“ProGuard Exteriors is an excellent company to deal with and we cannot recommend them highly enough. Their teams are reliable, efficient, effective and a pleasure to deal with. The end results they have produced on our exterior walls are superb. Thank you very much from David and Barbara.”
15 Years of Insulation Expertise
Tailored, energy-saving solutions engineered to last
Fully Accredited & Certified
TrustMark‑registered, PAS 2035‑certified installers
Quality You Can Count On
We only use premium materials, never compromise on workmanship
Eco-friendly, flexible protection that outperforms traditional render.
Spray cork is a sustainable alternative to exterior rendering and wall coatings — offering exceptional thermal insulation, weather resistance, and breathability, all in one seamless finish.
Thermal & Acoustic Insulation
Weatherproof & Breathable
Crack-Resistant Flexibility
Low Maintenance & Long-Lasting
Eco-Friendly
Slash your energy bills and give your home a fresh new look.
External Wall Insulation (EWI) wraps your home in a thermal layer, keeping heat in during winter and out during summer. It’s the smartest way to boost energy efficiency while upgrading your property’s appearance.
Lower Energy Bills
Improved Comfort
Enhanced Curb Appeal
Moisture Control
Long-lasting protection and a flawless finish for your home’s exterior.
Our high-performance wall coatings shield your property from the elements while enhancing its appearance. With a durable, weatherproof finish, they’re ideal for improving curb appeal and preventing costly damage over time.
Weatherproof Protection
Crack-Resistant & Flexible
Breathable Surface
Low Maintenance
Custom Colours & Finishes
A sleek, durable finish that protects and transforms your home’s exterior.
Rendering gives your property a fresh, modern appearance while shielding it from the elements. With a range of finishes and colours available, it’s the ideal way to upgrade your curb appeal and extend the life of your exterior walls.
Modern, Clean Finish
Weather & Impact Resistant
Crack-Resistant Technology
Low Maintenance
Wide Choice of Finishes
Excellent company to deal with
“ProGuard Exteriors is an excellent company to deal with and we cannot recommend them highly enough. Their teams are reliable, efficient, effective and a pleasure to deal with. The end results they have produced on our exterior walls are superb. Thank you very much from David and Barbara.”
Excellent job on a difficult house
“ProGuard have done an excellent job on a difficult house requiring a number of different treatments. Thanks especially to Dave who coordinated much of the work, and his colleagues who worked extremely hard to finish it.”
High-quality work and great communication
“Throughout the time of this CorkSol project we found the team very easy to work with. They communicated clearly, responded quickly to our requests and were polite and helpful. The quality of the workmanship was high and the finished treatment met our expectations completely. The site was left completely clean and clear of debris. Asen and his team and David worked hard to give us complete satisfaction. We highly recommend ProGuard as an applicator of CorkSol.”
15 Years' Proven Experience & Expertise
TrustMark Registered - certified for quality and compliance
PAS 2035 Retrofit Specialists
Member of Industry Standards
Local, Responsive & Dedicated
Hundreds of Happy Homeowners
What services do you offer?
ProGuard Exteriors are trusted experts in spray cork coatings, exterior wall insulation, rendering, and external facade refurbishment. Our full suite of wall insulation and rendering services include…
Spray Cork Insulation
Exterior Wall Insulation (EWI)
Exterior Wall Coatings
External Wall Rendering
Where do you operate?
ProGuard Exteriors are based in Aylesbury and proudly deliver expert exterior wall insulation and rendering services across Oxfordshire, Buckinghamshire, and Hertfordshire.
What accreditations and guarantees do you have?
ProGuard Exteriors are recognised for high-quality spray cork coatings, insulation, rendering, and facade refurbishment and are backed by numerous industry accreditations and independent protection schemes including…
TrustMark & QualityMark Endorsed
PAS-Accredited Installers (SHDF / WH:SHF)
EWI Pro Recommended Installers
CorkSol Approved Applicators
Up to 25-Year Installation Warranty
How does the free survey and quoting process work?
We offer a fast, no-obligation assessment that includes expert recommendations tailored to your property’s needs—all with a quick turnaround.
Free site survey, including wall cavity inspection
Bespoke quote with expert system recommendations
Fast response—typically within 24 hours
Why choose Exterior Wall Insulation (EWI)?
Exterior Wall Insulation (EWI) is a smart, long-term solution that improves energy efficiency, comfort, and the overall value of your home by addressing one of the biggest sources of heat loss—your external walls…
Reduces heat loss – walls lose up to 35% of heat in uninsulated homes
Cuts energy bills and boosts indoor comfort
Adds protection against damp and mould
Helps reduce noise and enhance external appearance
Can increase property value and improve EPC rating
What types of insulation and finishes are available?
As a company we primarily install natural Sprayed Cork (CorkSol) as a lightweight, breathable, and eco-friendly solution ideal for both insulation and exterior protection. We also offer a range of high-performance insulation materials and modern render finishes to suit different property needs…
Insulation Options…
Sprayed Cork Insulation (CorkSol)
EPS (Expanded Polystyrene)
Mineral Wool
High-Performance Phenolic Foam
Render Finishes…
Silicone Render – Low-maintenance & algae-resistant
Monocouche Render – Pre-coloured & breathable
Acrylic Render – Flexible & crack-resistant
Will insulation alter the look of my home?
Yes. EWI and CorkSol allow for a range of finishes, colours, and textures – including brick slips or timber cladding to match or refresh your property’s appearance.
Will insulation increase my property value?
Absolutely. Improved thermal performance, a better EPC, enhanced aesthetics, and savings on energy bills are all attractive to buyers – and can increase your property’s market value.
Start with a free, no-obligation home survey – we’ll assess your property, recommend the right insulation solution, and provide a clear, fast quote
03316 300 082
enquiries@proguardexteriors.co.uk
15 Edison Road, Aylesbury, Buckinghamshire, HP19 8TE
Monday to Friday 8:00am - 6:00pm / Weekends - Closed
What service are you interested in?