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.
A practical external door replacement decision starts with the affected item, its condition and the surrounding materials. Fit a suitable ordinary supplied leaf with agreed mechanical hardware and check closing, clearances and existing seal contact without altering the opening.
Signs: the door sags, rubs, sticks or has uneven gaps around the opening or the door closes poorly despite an otherwise sound visible opening. Causes: loose fixings, minor alignment drift or ordinary timber movement or local damage to an accessible component rather than an assumed structural defect.
The proposed leaf must suit external use and the existing opening. Send its product sheet, not just a catalogue photograph. This service covers ordinary non-rated solid leaves; glazing systems, fire-rated assemblies and specialised security products need separate appropriate providers.
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.