An ordinary hardware or alignment problem may be repairable without a new leaf. If replacement is appropriate, first confirm that the proposed external door suits the sound existing opening and exposure; a new leaf cannot remedy underlying frame or threshold defects.
external door replacement can be appropriate when the door sags, rubs, sticks or has uneven gaps around the opening. Review exposure, leaf weight and the existing frame before accepting a straightforward leaf replacement; a whole doorway system is a different task.
Signs: the latch, handle, hinge or ordinary running hardware no longer lines up or operates normally or the door sags, rubs, sticks or has uneven gaps around the opening. Causes: local damage to an accessible component rather than an assumed structural defect or normal wear in hinges, latches or compatible mechanical hardware.
Existing seals need space to contact the leaf without preventing closure. Show damaged or missing strips separately in the enquiry. A leaf replacement can include checking the agreed fit against compatible existing seals, but it is not certification of a complete weather-sealing system.
A heavier replacement can demand different support from the original door. Identify the proposed material and weight where available. Fixing condition and hinge compatibility must be reviewed before hanging; ordinary replacement does not authorise reinforcement or structural modification of the opening.