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“From the very beginning, we have been a strong advocate of Secured by Design”

Specialists in Architectural Glazing since 1957, Duplus Architectural Systems have renewed their membership with Secured by Design (SBD).

Duplus Architectural Systems Limited is a privately owned specialist glazing contractor based in Leicester who have been designing, manufacturing and installing glazed facades throughout the UK for over 65 years. During this time the company have gained vast experience in delivering successful projects of various sizes and complexities up to a value of £3M.

Duplus Architectural Systems are an approved installer of glazing systems offered by Reynaers, Kawneer, Metal Technology, Jack Aluminium and Senior Architectural Systems.

In addition to this, Duplus also offer its own CWCT weather performance tested and BS EN 1627 2011 security tested, Lightspan 50 curtain walling system. Duplus are also certified as a Fabricator Partner to manufacture automatic smoke vents to EN12101-2.

Duplus are widely known for their high quality glass rooflights which are factory structurally bonded. Duplus rooflights have been tested by the BRE for weather performance and LPS2081 security standards. Duplus rooflights are audited by Dow Corning and are one of the few UK companies to achieve Dow Corning Quality Bond Certification. Duplus rooflights are regularly reviewed on Trustpilot achieving 4.9 stars (263 independent reviews).


Duplus are both ISO9001 and ISO14001 certified and take great pride in offering customers outstanding levels of customer service. This approach has been instrumental in Duplus developing long-lasting, strategic relationships with some of the largest and most reputable construction companies in the UK.

Doug Skins, Secured by Design, said: “I am delighted that Duplus Architectural Systems have renewed their membership with Secured by Design, as they’ve been valued members with us since 2011. They have an extensive range of doorsets, windows, rooflights and curtain walling that has achieved SBD’s Police Preferred Specification and I look forward to working together over the coming years”.

Peter Gregory from Duplus Architectural Systems said: “From the very beginning, we have been a strong advocate of Secured by Design and will continue to develop products that meet its exacting standards.”

You can find out more about Duplus Architectural Systems and their extensive range of SBD accredited products here.