A grille designed only to protect against intrusion can become a serious problem if it blocks the only exit in case of fire. It's a regulatory nuance worth explaining to the client before installing the cheapest option as a matter of course.
Fixed grille: protects, but may block evacuation
The fixed window grille is a metal structure anchored to the opening. Some autonomous regions regulate the maximum spacing between bars. The critical point: a fixed grille also blocks the emergency exit in case of fire. If local regulations or the project require it, consider an openable grille with a quick-release system from the inside rather than a fully fixed one.
Hinged grille: the solution combining security and evacuation
The hinged or openable grille can be opened from the inside, meeting the emergency-exit requirement without giving up protection against intrusion. Always fit the opening system inside without needing a key (handle or emergency push-button type): a hinged grille that only opens with a key from inside doesn't solve the evacuation problem in a real emergency, because at that moment nobody has time to look for the key.
Swing garage door: needs sweep space
The metal swing garage door, with two leaves opening outwards or inwards, needs free space for the sweep of the leaves. In garages with little margin relative to the pavement or the parked vehicle itself, a sectional or roller door makes better use of space.
Metal roller shutter: manual or motorised
The metal roller shutter, with slats that wind onto an upper drum, is widely used on shops and garages. The motorised version allows remote opening and is almost mandatory on large or heavy shutters for convenience; on single-family garages it's still usual to fit it manual to reduce cost.
Perimeter fence: the post foundation is what holds
On a perimeter fence, foundation each post well before fixing the panels: a poorly anchored post is the first point where the whole fence gives way under a push or an attempt to force it.
Frequently asked questions
Can I install a fixed grille on any window? It depends on local regulations: a fixed grille can block the emergency exit in case of fire, so in many cases a hinged system with quick opening is needed.
Does a hinged grille with a key lock meet the evacuation regulations? Not fully: opening must be possible without a key from inside (handle or push-button), because in a real emergency nobody has time to look for it.
When is a sectional garage door worthwhile compared with a swing one? When there isn't enough space for the sweep of the swing leaves, typical in garages with little margin relative to the pavement or the parked vehicle.
Conclusion
Explaining to the client the difference between a fixed and a hinged grille in terms of evacuation safety —not just protection against intrusion— is a locksmith's responsibility, not just a product sale. A well-made post foundation on a perimeter fence, though not visible, is what determines whether that protection withstands a real attempt to force it.
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