Let the oven cool before inspecting the opening
Switch the oven off using its normal controls and keep clear until it has cooled. Look for a tray, rack or baking dish projecting beyond its correct position. Re-seat only ordinary removable cooking accessories as the manual describes; do not reach into hinge slots or dismantle the door.
A recent deep clean is useful context. If the door or racks were removed, tell the repairer what changed rather than repeatedly trying to refit a heavy door. Hinges can be spring-loaded, and an incorrectly seated door can move unexpectedly. Do not place weight on the open door.
Separate seal appearance from door alignment
Note whether the gap is even, concentrated at one corner or associated with a visibly dropped door. Look for a displaced seal, torn section or glass damage without pulling on parts. Some oven seals have intentional gaps or joins, so compare the design with the model instructions rather than sealing openings yourself.
Do not add adhesive, bend a hinge or tighten hardware based on generic advice. A latch, hinge, mounting or seal issue needs the correct model and assessment. Cracked glass, exposed insulation or contact between the door and surrounding cabinetry are reasons to leave the oven unused.
A door gap needs a model-specific assessment; share the cooled photographs and fuel type through our oven repair enquiry service.
Avoid heat-based workarounds
Increasing the temperature to compensate for escaping heat does not correct the problem. Neither does using only the grill or running a self-clean cycle to see whether the latch resets. Self-cleaning functions impose particular heat and locking conditions and should not be used as a test for a suspect door.
Provide the fuel type, full model, a photograph of the cooled gap and details of any recent cleaning or installation. Mention whether the door feels loose or strikes cabinetry. Repair options depend on the complete door and cavity condition, not just whether a replacement seal can be found.