Aluminium, UPVC, Wood and Composite Doors in Barnet, Epping and North London | Security Hardware

Your security matters to us. When you have windows and doors fitted by the North London Windows team, we supply you with a product that comes with an advanced locking system. Winkhaus is the best-known of our innovative brands and their knowledge of security comes to the fore in their FAB slave door locks. This is a locking system that is perfect for aluminium doors, composite doors, and even doors made from UPVC and wood.

We can include Winkhaus locking systems on door installations in all North London areas, including Barnet, Epping, Enfield, Islington and Tottenham, and across East London too. If you are a commercial client using us to install doors on your own projects, we can operate nationwide for you if needed.

The Winkhaus FAB slave door lock comes as part of a high-security locking range that doesn’t need kitemarked cylinders, handles or guards. An inclusive two-way lever fires robust shootbolts into the head and the sill. When used with multipoint systems, the hooks enter the slave lock to secure the leaves. This design doesn’t need a dummy mullion.

This means a Winkhaus slave lock won’t affect your sightline.

At North London Windows, we understand that your family’s welfare, and your assets, deserve the best levels of protection. Our company continually searches the sector to find high-security hardware for windows, and for aluminium, UPVC, wood and composite doors, that help you relax when you aren’t there, and to sleep more easily at night when you are.

Please read our customer testimonials to find out more about the peace of mind our installation services can bring, whether you are in Barnet, Epping, Enfield, Islington or Tottenham, across North or East London, or elsewhere in the UK.


For high-security locking systems in Barnet, Enfield, Epping, Islington, Tottenham, all London areas and the UK, call 0208 345 6008 (Office).


Office: 0208 345 6008


Unit 14, Chingford Industrial Centre,

Hall Lane,



E4 8DJ


Monday - Friday: 08:00 to 16.00

Saturday and Sunday: Closed


North London Windows Limited offers both regulated and unregulated products.