Quality and Service is paramount, so I offer a written two year guarantee on all lock installations (UPVC gearboxes 5 years ). In most burglaries, the criminals broke into the house or flat through the door, either by forcing the lock or kicking it in. So make sure your doors are strong and secure. Consider fitting a bar for extra strength; a locksmith can advise you on how best to do it. Glass panels on doors are particularly vulnerable. If you have one on your door you could replace it with laminated glass, which is stronger.