A white metal sash jammer lock for uPVC windows and doors, including mounting screws.
Size chart and components for Home Secure sash jammer
Application instructions for Home Secure window/door sash jammer
Fitting instructions for the Home Secure window or door sash jammer
Home Secure promotional image highlighting features of a sash jammer product. Key points include: high quality construction, smooth operation, and screws supplied. The image shows two views of the white lock fitted on a uPVC door, along with a branded packet of screws
Examples of Home Secure sash jammers on doors. Left side shows a set of white uPVC patio doors with sash jammer locations highlighted at the top and bottom, labeled 'Door Fitting'. Right side shows a front door with decorative glass panels, highlighting the letterbox and sash jammer installation area, labeled 'Letterbox Lock'. Yellow circles indicate fitting points
Window fitting example for Home Secure sash jammers. Image shows a white uPVC window with the frame seal installed. Two yellow circles highlight the areas where the sash jammer is fitted around the window locking points
A white metal sash jammer lock for uPVC windows and doors, including mounting screws.
Size chart and components for Home Secure sash jammer
Application instructions for Home Secure window/door sash jammer
Fitting instructions for the Home Secure window or door sash jammer
Home Secure promotional image highlighting features of a sash jammer product. Key points include: high quality construction, smooth operation, and screws supplied. The image shows two views of the white lock fitted on a uPVC door, along with a branded packet of screws
Examples of Home Secure sash jammers on doors. Left side shows a set of white uPVC patio doors with sash jammer locations highlighted at the top and bottom, labeled 'Door Fitting'. Right side shows a front door with decorative glass panels, highlighting the letterbox and sash jammer installation area, labeled 'Letterbox Lock'. Yellow circles indicate fitting points
Window fitting example for Home Secure sash jammers. Image shows a white uPVC window with the frame seal installed. Two yellow circles highlight the areas where the sash jammer is fitted around the window locking points
Home Secure

Sash Jammers | Home Secure™ Extra Security Locks for uPVC Doors & WindowsSash Jammers

5 reviews
£4.99 £3.99 Sale SKU: HS4285
Order by 2pm for same-day dispatch
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Eye visibility icon in black, representing monitoring, visibility, or visual deterrence, displayed on a transparent background.

Same-day dispatch on orders before 2pm

Enhance your window and door security with the Sash Jammer. The Home Secure Sash Jammer has been built with quality and durability in mind.

Key benefits
  • Extra security for uPVC doors/windows - highly visible deterrent
  • Easy fit, easy operate - 3 button spacers and packers included
  • High-grade metal, white coating - matches standard uPVC profile
Product overview

Enhance your window and door security with the Sash Jammer.

The Home Secure Sash Jammer has been built with quality and durability in mind. Manufactured from a high grade metal and finished with a resilient white coating. We are now offering excellent value discounts on this product, 100% satisfaction guaranteed or your money back!

  • Easy to fit and operate, used on both uPVC windows and doors for extra security
  • 3 different sized button spacers and packers provided to ensure a stylish fit onto different profiles
  • uPVC Screws provided for use with reinforced windows
  • We recommend using Jack Nuts (supplied separately) to gain a secure fit onto un-reinforced window frames
  • You won't know if frame is re-inforced until you drill a pilot hole (2mm drill bit recommended) and feel tension or lack of tension

Fitting Advice

We provide access to online fitting instructions and installation video.

View our guide on the Sash Jammer

How many to use?

1 Sash Jammer - Small Window or Letterbox

2 Sash Jammers - Large Window / Single Door (Top & Bottom Fitting)

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

Key Features

  • Prevents sash/window or door from being forced open by intruders.

  • Designed for uPVC frames, but compatible with timber and composite.

  • Simple to fit — DIY friendly and affordable.

  • Ideal for ground floor or basement access points.

  • Visual deterrent: a visible jammer makes your property less attractive to burglars.

🏠 Ideal For

  • uPVC doors and windows needing extra reinforcement

  • Rental properties, ground-floor flats, or homes with easy-access points

  • Homeowners looking for a reliable, budget-friendly security improvement

  • Adding extra peace of mind to existing locks and handles

⚙️ Technical Details

  • Brand: Home Secure™

  • Type: Sash jammer / extra security lock

  • Finish: White

  • Material: Metal with powder-coated finish

  • Suitable For: uPVC, timber, and composite doors or windows

  • Included: Fixings and installation guide

  • Installation: Surface-mounted with screws (included)

🛒 Shop the Home Secure™ Window & Door Security Range

Upgrade your home’s protection with more practical, easy-fit solutions from Home Secure™.
Delivery & Returns

How much is delivery?

UK Mainland Delivery is £2.99 on all items no matter how many you order!

Northern Ireland, Scottish Highlands, Channel Islands £6.00.

We do not offer International Delivery (Ireland, France, Spain etc).

When will my order be dispatched?

Orders before 3pm (Monday to Friday) are usually dispatched same day but may take up to 24 hours.

When will I receive my item?

We ship on 2 working day courier. Fully Tracked. Tracking will be emailed on dispatch. 

Special order items such as keyed alike locks will take longer to dispatch. Please refer to product description for lead times. 

I haven't received my item?

Please email us your name, order number and date of purchase.

We prefer email as it allows us time to research and respond.

Returns Information

We operate a 30 day refunds and return policy. 

If you change your mind you must return the product back to us within 30 days of delivery

Please include a copy of your invoice and a note stating reason for return. 

Additional keys, locks keyed alike or built to code are non refundable as they are personalised made to order goods.

Any refund, which is due to a fault or other defect, will include a refund of the applicable delivery charges otherwise not. 

It is the buyers responsibility to arrange the return of goods to us. We do not offer a collection service for returning items. 

Items must be returned including original product packaging and accessories.

We reserve the right to refuse any returns that do not comply with this policy.

Please post returns to the following address:

Home Secure (Online)

Unit 5, Brookfield Drive

Liverpool, L9 7AJ

United Kingdom

Frequently Asked Questions

A sash jammeris a small lever-operated device that clamps the window or door sash against its frame. When engaged, it prevents forced entry even if the main handle or lock is compromised.

Yes — thesesash jammersare designed for uPVC frames but can also be used on composite and timber doors. They’re especially effective for French doors, patio doors, and ground-floor windows.

For single doors or small windows, one at the handle side is usually enough. For larger doors (like double French doors), fit one at the top and one at the bottom for maximum protection.

Yes! They’re designed for simple DIY installation. Just screw into the frame, align the arm with the sash, and tighten — all fixings are included.

Absolutely — they act as a visible deterrent and a physical barrier. Even if a burglar bypasses your main lock, the engaged sash jammer stops the door or window from opening.