Appendix 6 – Glazing Protection Measures
Narrow windows (150mm)
Advantages
Not easy to climb through
Reduced costs
Disadvantages
May not be aesthetically pleasing
Using window locks
Advantages
Helps to reduce the risks of surreptitious entry.
Helps reduce the risk of items being dropped or lowered out of the window.
Cost effective.
Disadvantages
Limited benefit if the pane is attacked.
Metal bars[1]
Advantages
Visual deterrent
A degree of robustness from opportunistic adversaries
Reasonably cost-effective
Can be installed inside or outside the glass.
Disadvantages
Susceptible to cutting
Can be pulled from fixings if a vehicle is used.
May not be approved by planners
Possibly not accepted aesthetically
Shutter/Grille (not security rated)
Advantages
Visual deterrent
A degree of robustness from opportunistic adversaries
Reasonably cost-effective
Disadvantages
Susceptible to cutting
Can be pulled from fixings if a vehicle is used.
May not be approved by planners
Possibly not accepted aesthetically
Timber shutters with locking bar
Advantages
Potentially cheaper than the above.
Aesthetically pleasing
Disadvantages
Susceptible to cutting
Susceptible to direct force attack
Weaker than the above.
May not be approved by planners
Possibly not accepted aesthetically
Timber shutters with steel inserts and metal locking
Advantages
Aesthetically pleasing
Increased robustness over standard timber shutters
Disadvantages
May not be approved by planners
Possibly not accepted aesthetically
Security rated (SR3) Shutter/Grille
Advantages
Robust
Visual deterrent
Can be installed inside or out
Disadvantages
Cost
May not be approved by planners.
Possibly not accepted aesthetically
Secondary security glazing (SR3)
Advantages
Discreet
Robust
Aesthetically pleasing
Normally acceptable to planners if demountable.
Environmentally supportive
Disadvantages
Cost
[1] Securely affixed to the masonry or designed in.