After years of exhaustive research, Duraflex have developed the Diamond Suite – now an established industry leader.
Designed to withstand the rigours of the British climate, the multi-chambered construction of the extrusions give optimum thermal and acoustic insulation, ensuring that for years to come you will enjoy a warm and comfortable home.


The Diamond Range of windows are 'B' rated energy efficient as standard and have been recognised as being one of the most energy efficient windows on the market.
The "Energy-Rating" symbol is most commonly found on domestic appliances and the energy efficient ratings are acknowledged by the Energy Saving Trust.
The Britelite Diamond Range is 'B' rated because
Insurance-approved locks are fitted as standard on our entire range, so you may find that investing in windows and doors from the Diamond Range will not only enhance the appearance and comfort of your home, it could save you money on your household insurance too!
If you want to improve your home and save money on your bills with beautiful new windows, doors or a conservatory, contact us today!
Why not fill out our online quotation form now for an instant, competitive, no obligation quotation?!