Discuss accessible openings
Start with windows that can be reached, including those near a terrace or extension. Explain how you use and ventilate the rooms. This helps the adviser consider security alongside an opening arrangement that remains practical for the household.
Assess the whole window
Hardware, locking points, glazing, frame and fixing work as an assembly. A security feature on one component does not automatically apply to the whole window. Ask what evidence supports the exact combination being offered for your project.
Use after installation
Ask for a demonstration of every locking function and its checks. Discuss key management and what an open or tilted window means for protection. Keep product documentation together with the agreed arrangements for adjustment and routine maintenance.