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The recent debate around choosing third party PVCu reinforcement options over the system-specific reinforcement raises an important question about what happens when you change any element of a door or window’s design and construction.

Designing and manufacturing fit for purpose fasteners that deliver on their promise is a complicated business. From a fastener’s pull-out strength and driveability to its corrosion resistance and structural strength, its design has to tick multiple boxes, otherwise it could be the cause of a costly door or window failure.

Most of us will think of aluminium windows and doors as being the ultimate choice for superb visual appeal, long term performance with no maintenance and resistance to the harshest of weather conditions. But while aluminium does not ‘rust’ – that term refers only to iron and its alloys like steel – putting it in contact with other types of metal can lead to costly corrosion issues.

Advanced locking systems, hinges, friction stays and ancillary products designed to deliver enhanced security windows and doors could be ineffective if the wrong type of fasteners are used and PAS 24 testing fails.