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The 70mm Diamond Suite

Duraflex offer one of the most complete PVCu window and door systems on the market, meticulously designed and tested to meet the exacting demands of today’s fabricators, installers and end users alike.  With over 60 years industry experience, we have built a reputation for quality and customer excellence across all areas of the business.

The Duraflex Diamond Suite is the result of extensive R&D, product innovation, technological advances and an unwavering commitment for quality and continuous improvement. The resulting offering delivers a complete suite of products that enables virtually any style of window or door to be manufactured and installed.

Our profile is manufactured in either the traditional bevelled (putty line) frame and bead system, or the defined featured system, with both options available in a wide choice of colour and finish options, ensuring a wide range of aesthetics can be achieved to suit any application. Duraflex supply all profile with pre-inserted Q-Lon weather seal, as standard. Consistently regarded as the world’s best gasket, thanks to its performance across a wide temperature range, its thermal, acoustic and recovery properties, all of which are backed by a lifetime guarantee.


Duraflex Anthracite Grey Window Profile

The Fabricators' Choice

The introduction of our advanced multi-chambered profile has further increased the thermal efficiency of the Diamond Suite, allowing band A++ to be achieved and a U-value as low as 0.8. To compliment our window and door systems and to ensure that Duraflex projects are seamlessly suited, we also offer an extensive range of ancillaries, including cills, trims, structural couplings, adaptors and an exquisite new Georgian Bar range. 




"A proven partner to the UK's leading fabricators; proudly supplying retail, trade, commercial and new build markets for over 60 years."