How To Fit a Sash Jammer to uPVC Windows and Doors

Sash Jammer Fitting Instructions

Sash jammers provide excellent additional home security for uPVC windows and doors. The sash jammer handle pivots and is secured over the frame, offering resistance to deter forced entry.

How many to use?

1 Sash Jammer – Small Window

2 Sash Jammers – Larger Window / Single Door (Top & Bottom Fitting)

4 Sash Jammers – French/ Patio Doors ( 2 Top, 2 Bottom on each door)

The Shropshire Council offers clear and practical guidance on how homeowners can improve their property’s overall security and reduce burglary risks. Their community safety advice highlights the importance of fitting strong door and window locks, using PAS 24-certified components, and maintaining well-lit entry points. Following these local authority recommendations alongside proven solutions like sash jammers and multipoint locks helps create a more secure, crime-resistant home environment. For further information on local safety initiatives, visit the Shropshire Council – Community Safety Advice.

Fitting Advice

1) Locate the Sash Jammer onto section making sure that the window can still open & close without contact with the Sash Jammer Body.

2) Drill 2mm pilot holes into the section using the sash jammer as a jig.

3) If you encounter re-inforcing when drilling pilot holes you should then use the self tapping screws provided.

4) If the pilot holes drill through relatively easily then there will be no re-inforcement and you will need to use jack nuts

Fitting Video

Please Note: We recommend using a 2mm drill bit. Jack nuts are supplied separately to our sash jammers. We recommend using a 9.5mm drill bit when using jack nuts.

Sash Jammer our sash jammer range here

📚 Featured Collections in this Article

Sash Jammers Collection
Full range of sash jammers, both locking & non-locking, in different finishes to match your windows & doors.

A white metal sash jammer lock for uPVC windows and doors, including mounting screws.

Diy home securityHome safety tipsSash jammer installationUpvc door securityUpvc window security