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In the old days of first-generation, single chamber frames, uPVC frames had to be fully reinforced as they simply had very little structural integrity or strength.
As we use the latest multi-chambered technology in all our frames, reinforced to the extruders' specifications, you can be sure your new windows and doors will be just as strong as fully reinforced frames. The state-of-the-art multi-chambered construction ensures structural integrity and robustness in frames, with additional steel reinforcement where required.
Over long lengths of frame, full reinforcement may be required, as recommended by the extruder. If you have very large windows or doors, we will fully reinforce them as required.
In addition, to help with structural rigidity and robustness, we use thermal inserts, which not only strengthen the windows but have the added bonus of making them even more energy efficient!