A sound leaf that only rubs or latches poorly may suit adjustment or hardware repair instead. Replacement is considered for an unsuitable or damaged leaf after checking that the existing opening can accept the proposed door.
Existing hinge recesses and screw positions need checking against the replacement leaf. Reusing a hinge depends on its condition and suitability for the new door. Damaged screw holes or a heavier leaf may change the agreed hardware work without making structural changes appropriate.
A replacement leaf may arrive unfinished, primed or factory coated. Cutting and fitting can leave edges needing the product-specified protection. Agree who supplies the finish and whether painting is included; hanging a door alone should not be mistaken for a complete decoration package.
Check the swing across the actual floor, including rugs and any planned flooring change. The aim is a workable clearance with an aligned leaf. Removing excessive material to compensate for an unsuitable opening is not a substitute for checking compatibility first.
Hang the compatible replacement leaf, fit agreed ordinary hardware and check floor clearance, alignment and closing in the unchanged opening. Scope limits: Ordinary compatible internal leaf replacement only. No structural opening changes, fire or smoke-rated doors, certification, locksmith services or powered security integration.