Does Your Project Require Rendering & Insulation?

Commercial Projects

South East Coverage

We Provide Rendering & Insulation Services Across South East England.

Free 25 Year Guarantee

Get A 25 Year Guarantee On Any New Installation Carried Out By Our Team.

Over 20 Years Experience

Trustmark Endorsed. Fully Insured & Accredited With Quality Mark Protection.

Free Quotes Given

We Provide Free Quotations For Any Type Of Residential & Commercial Project.

Insulation & Rendering Contractor

ProGuard Exteriors is a specialist Insulation and Rendering contractor, working throughout South East England. With over 20 years experience working on a variety of commercial projects as the main or sub-contractor, we’ve seen most types of developments, from the mainstream to the unique.

“The best kept EWI site we’ve ever seen”.

St Albans Council

Our Services

We offer complete end-to-end Insulation and Rendering services for retrofit or new build projects. We can work as the sub or main contractor, partnering with developers, councils, architects, surveyors or energy efficiency specialists.

Retrofit EWI projects for commercial buildings, developers and contractors in South East England
ProGuard Exteriors is a fully accredited insulation installer contractor for commercial projects.

Fully Accredited & Insured

Rest assured, our highly trained and experienced team are fully accredited in all relevant quality standards (TrustMark, PAS2030), as well as approved EWI installers.

Our work is covered by a free guarantee of up to 25 years, via Quality Mark protection.

Why work with us?


Royal Bucks Hospital

Working in partnership with EWI Pro, we recently managed the retrofitting Energy Efficiency Measures at the renowned Royal Buckinghamshire Hospital.

Social Housing Decarbonisation Fund - ProGuard Exteriors retrofitting insulation measures

Social Housing Decarbonisation Fund

Retrofitting Energy Efficiency Measures across Social Housing estates.


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5-Star Google Reviews