Sash Jammers

Sash jammers are one of the simplest yet devastatingly effective tools to boost one’s window security. They’re compact devices that swing into locked positions, preventing your windows from opening even if locks are already defeated (or damaged). A sash jammer is an unassuming little champion that bolts onto your window frame. It creates an immovable barrier when engaged, preventing forced entry. Unsurprisingly, insurers recommend them. And our jammers at are Secured by Design approved so would-be intruders would think twice.

These small window security devices are perfect for uPVC windows, aluminium frames, timber casements, and anywhere additional window security earns insurance discounts. They excel on accessible ground-floor windows and vulnerable access points. Even outbuilding where standard locks seem insufficient can benefit from a sash jammer. You’ll never worry about intruders breaking in through the window of your rental property, commercial establishment, or even residence in a high-risk area.

At Locks & Handles, we offer a wide range of robust options for less than £10. Want an elegant sash jammer, try the ERA 816 or 830. And if you have a uPVC window, Fab & Fix has a few offerings. We will guide you in selecting the best fitting jammer to go into your window sash.