What needs to be clarified
The task is to examine the agreed window configuration and accessible malfunction features without assuming that complete replacement is necessary.
Materials to prepare
- Contract, hardware specification, measurement sheet and installation records.
- Sash, frame and hinge photographs, and a safely obtained recording of the problem.
- Adjustment records, the condition before intervention and contractor correspondence.
What to compare
- Compare installed hardware with the documentation and window configuration.
- Check accessible geometry, sash position and locking-component operation.
- Separate supported defects from explanations requiring further checks.
Possible outcome of the analysis
A possible result describes malfunction features and technical grounds for further examination or correction.
Limits of the conclusions
Do not force the sash closed to record the problem; dismantling and other changes require agreement before examination.