Sash Jammers & uPVC Window Reinforcement
Low-cost reinforcement that physically jams a uPVC door or window shut — strongly recommended after any break-in attempt.
Fitted to uPVC doors and ground-floor windows
Defeats lifted-handle attacks and lock snapping
Discreet — doesn't change the look of the door
Often supplied free with anti-snap upgrades
Sash jammers are a small metal bracket fitted to the inside frame that physically prevents the door being prised open even if the lock is defeated. They're one of the most cost-effective security upgrades available.