Sash Jammer

Features Include:

• Designed for uPVC windows and doors

• Prevents the levering of the sash or door leaf

• Easily secured with just a twist of the sash jammer handle

• Offers resistance to deter forced entry

• Comes with 1mm and 2mm packers

Sash jammers are a simple yet highly effective security enhancement for uPVC windows and doors, offering an affordable way to strengthen your home’s defences. These easy-to-install devices provide a physical barrier against forced entry, helping to deter burglars by preventing the sash or door leaf from being levered open — even if the existing locking mechanism is compromised.

Suitable for both inward- and outward-opening windows and doors, the sash jammer is operated with a simple twist of the handle, swinging the arm securely over the frame to block movement. Once engaged, it adds an extra level of resistance that significantly improves security with minimal effort or cost.

Built for reliability and ease of use, sash jammers are a popular choice for homeowners, landlords, and property managers looking to add quick, visible, and effective protection to vulnerable entry points. Their compact design and choice of white or brown finishes ensure a discreet appearance that blends well with most uPVC frames.