Are my windows and doors secure?

9th October 2017

October is National Home Security Month and Craig Smith, Director at Copperfield Windows, explains why your home might not be as secure as you thought.


National Home Security Month is a campaign which aims to raise awareness of the things that we can all do as homeowners to improve the security of our properties from installing cameras and security lighting to replacing locks and windows.


The industry has invested heavily over the past decade into improving the frontline of home defense, your windows and doors.


The systems we used just a few years ago, although cutting edge at their time, can be vulnerable to new techniques which, if nothing else, a very determined criminal fraternity are now using to commit crime.


Most common signs that your Windows and Doors are Long Overdue a Replacement:


  1. Are your windows or doors in a good state of repair?

This is the starting point. Poorly maintained windows and doors are obvious week points in the security of your home. If locks don’t work, if wooden windows are rotten or warped, they’re by definition, more vulnerable and more tempting to burglars.


  1. Are your PVC-U windows externally glazed?

This should set alarm bells ringing. When PVC-U windows first came out they were often externally glazed. It made installation and glass replacement easier, mainly because it means the double-glazed unit was easier to take out. The trouble is, it’s just as easy for burglars to do the same. If you have old externally glazed PVC-U windows, your home isn’t secure – even if they do have locks!


  1. Are your patio doors more than 20 years old?

The great thing about aluminium and PVC-U windows and doors unlike timber is that they still look great after years of service with only minimal maintenance. The downside is that this can lead you into a false sense of security about their performance. Older patio doors a prime example. They were manufactured with an inherent weakness – the sliding sashes in many cases can be lifted out of the frame from the outside! If you have them, replace them now.


  1. Do you have a Eurocylinder lock on your entrance doors?

Eurocylinders aserve as an illustration of how product technology moves on. They were heralded as a security innovation when they first hit the streets but very soon a number of failings appeared. This includes snapping’. The lock can be grabbed where it protrudes from the handle with mole grips or a similar tool and then hit with hammer to snap the lock in two.


  1. Do your windows have multi-point locking?

New PVC-U windowsfeature multi-point locking systems. These use multiple shoot-bolts to anchor the opening sash to the window frame, making them almost impossible to force. If you don’t have locks, or have cockspur handles, your home is going to be vulnerable.

  1. Bumping

Eurocylinders are such a security risk that we have actually listed the twice! This time the method is altogether more sinister. Burglars can break into your house leaving no sign of damage using a widely available skeleton key, originally designed for locksmiths. This allows them to gently knock the pins that hold the locking mechanism in the locked position out of place, allowing them to freely open the door. And because it leaves no obvious signs of forced entry, there have even been cases where insurance companies won’t pay up!

  1. Do you have older PVC-U or timber doors?

We promise, we’re not just ‘knocking’ older products but so many of them seem to have featured underlying weaknesses. All that stands between a burglar and entry to your home in a timber door is often a good kick because without multi-point locking, the force of the impact goes into just one or two points in the frame. Older PVC-U panel doors may use multi-point locking but they also have an inherent vulnerability.  Give the main panel a good kick and you can be through it in seconds!









The Eurocylinder:


There are 45 million entrance doors in the UK and  Eurocylinders are fitted in more than 70 per cent.! And we would be lying if we said we hadn’t fitted them. Copperfield Windows like everyone else in the industry supplied them because they were at that point, the most secure and highly accredited solution available.


If you do have a Eurocylinder lock we would suggest is it might just be worth upgrading your lock to an anti-snap cylinder. Copperfield Windows or a locksmith can do this for you with very little disruption. You should look for PAS 3621 or TS 007 Kitemarks, which are designed to resist attack.


High security windows and doors

Alternatively you may want to just opt for new Energy efficient windows and doors. These can make your home more secure while cutting by up to 75%.

Copperfield Windows offers a wide choice of high security windows and doors as standard. This includes energy saving triple-glazed windows with U-values as low as 0.8W/m².K.


Window security features as standard:

  • 8-point locking (9 on larger sizes) providing the ultimate burglar deterrent. 

  • Heavy duty bolt has up to 300 per cent greater contact area against competitor shoot-bolts
  • Tested by an independent test laboratory to over 6,000N force; more than double the requirement of the BSI 7950 security test. 

  • Developed to withstand even the most determined intruder 

  • Patented bolt into the keep docking system prevents sideways movement of the bolt when under attack

  • Meets and exceeds all current building standards including Part Q.

Where security is a major area of concern, this core specification can also be enhanced to meet all requirements set out under the police approved security enhanced Secured by Design standard.



Our door and back door composite door and PVC-U door ranges are supplied to a UK Police approved Secured by Design specification as standard:

  • Cylinder guard system
  • Robust handles manufactured from stainless steel
  • Anti-drill and anti-pick door lock cylinder
  • Steel reinforcement
  • Single piece door-keep and multi-point locking
  • Local thickening of PVC-U frames to provide increase
  • Meets and exceeds all current building standards including Part Q


According to figures from National Home Security Month there’s a 25% spike in home burglaries during the autumn and winter , leaving homeowners with an average repair bill of £700-£3000 and  £2,300 in property losses – that puts you well along the road to new windows and doors!


For more information, please don’t hesitate to email me on or call a member of our team on 024 7645 2688.

Request a free brochure here!

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