I do like the grilles discussions, our properties all have grilles fitted on all points of entry. They all require repainting every couple of years, a like sand to remove anything flaky then a liberal coat of smoothrite. We did look at having them blasted and powder coated but the cost put me off, I think a door was €150. Grilles are a layer of security and a deterrent to any would be naughty person, they will not stop a determined intruder, when I paint mine I take them off and paint them on the floor, removal takes 1 simple tool and 5 minutes of effort. As for the windows they can’t keep out a draught let alone a burglar again 1 tool or use the cutlery draw and out pops the window, the shutters well I’ll say no more. Security is all about the odds, if no one has grilles then the odds are in your favour, if only 5 in a 100 have none then the odds go against you. Obviously good neighbours, cctv, and security lights all play a part.
Couple of years back some guests had locked themselves out, I said go for a drink and give me half hour, grille off, window out, door opened and all put back together whilst beer still cold.