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Information for your window lock fittings. Here at North London Locksmiths Ltd. we can fit any lock for you, whether for doors, wether wooden, metal or UPVC.
If you would like advice on your Home Security matters please telephone:-
020 8800 6041
To speak to a member of our Locksmith Team, not a call centre.
Telephone Night or Day on the following number....THIS IS A FREEPHONE NUMBER....Even from a mobile.
STAMP OUT ROGUE TRADERS.....THERE IS NO NEED TO PAY MORE THAN IS NECESSARY.
   For your window lock fitting, use the North London Number "ONE" fitters. |
    Approved by the Government and Police. |
Our Locksmiths and Carpenters will supply and fit all types of locks for you, whether door lock, to wood, UPVC, metal or aluminium, they will also replace locks, as well as open, repair and fit them.
WHAT YOU ARE QUOTED YOU PAY... NO HIDDEN PRICES.
What lock to fit and where.
Fit a lock which secure the frames together in preference to locks which simply secure the handle or stay bar. Casement windows, by their very design, need to be locked by securing the window to the frame. Most casement locks are screwed to the window rather than the frame - a weaker system. There are locks which are fixed to the frame and these are probably more secure, as well as being easy to use.
There are also locks specifically designed for use on windows with tapered edges (not 90º to the frame).
Fit locks which secure the frames together in preference to locks which simply secure the handle or stay bar. Casement windows, by their very design, need to be locked by securing the window to the frame. Most casement locks are screwed to the window rather than the frame - a weaker system. There are locks which are fixed to the frame and these are probably more secure, as well as being easy to use.
There are also locks specifically designed for use on windows with tapered edges (not 90º to the frame).
If you are intending to use the type of lock that screws to the window, the following test is a rough guide to help you to decide how many you will require: with the window closed, press each opening corner. If there is any movement, fit a suitable lock, such as a push lock (push to lock, key to open) at each corner on the opening side. If there is no movement, a lock fitted to the centre of the opening frame will suffice.
It is possible to secure wooden casements in the open position for purposes of ventilation, very necessary in hot weather, or child safety. These are particularly appropriate in a ground floor bedroom situation where someone wishes to sleep with the window open.
Likewise they are well suited to upper floors where windows can be locked open, allowing ventilation but, at the same time, preventing children from opening the window beyond a safe aperture. Whilst it is recognised that this type of device is designed more for safety purposes rather than security, it would be likely to alert the occupant if an attempt to force it was made. It is intended that these locks should be used only when someone is in residence. If your home is unoccupied the windows should be locked in the usual manner.
If you are considering replacing your existing windows, look for the new British Standard 7950 kite mark. It has been established to set specific manufacturing standards of design and security for casement windows.
Note: Georgian wired glass may look strong, but it will easily break. It is a fire safety glass not a security glass.
We are the Number "ONE" window lock fitters for North London.
Wooden sliding sash
You cannot rely on existing central sash fasteners. Sash stops are strong and convenient to use and do not need to be removed from window when opening fully. They can be set into the top frame allowing the window to be left open about 5" for ventilation but still secure. For optimum security fit in pairs.
An alternative form of lock is the dual screw. These in effect bolt the two sashes together. An added bonus is that, in so doing, they also reduce draughts.
The beading which holds the glass in place is frequently only pinned. The window can be made more secure, either by gluing in addition to pinning or screwing the beading, if wide enough, in place.
A modern style is the 'tilt to clean' sliding sash, not only sliding up and down but also tilting inwards for cleaning by undoing two clips on top of each moving sash. These should be secured by fitting both sash stops and dual screws window lock.
Metal Crittal
You can either secure the window or the handle to prevent opening. One of the main problems with this type of window is the narrow profile of the frame, making it difficult to fit devices.
For this reason there are locks specifically designed for this type of window. It is probably easier to secure the handle, where there is normally more room to fit the lock. Use a fanlight window lock to secure the fanlight window.
Aluminium
In the case of sliding horizontal aluminium windows, additional security can be achieved with the fitting of a key operated window lock clamp on the bottom rail of the frame. Windows are often left open to allow the circulation of air, particularly in hot conditions. This, inevitably, reduces the level of security. By fitting a sliding window lock to the bottom rail you can restrict the slide to a few inches.
Alternatively, drilling a small hole through the bottom rail at the point at which you wish to restrict the slider and inserting an appropriate sized bolt will suffice. Additionally, to prevent the slider being lifted, fit a wooden block of a suitable depth into the track above the slider.
Louvres
Louvered windows are not so common as they used to be. In the main, this is because their inherent lack of security is well recognised. There are some measures that can be taken to make them less vulnerable, but these should be seen only as temporary, for overall, it is best to replace them at the earliest opportunity the window lock to fit and help with security are as shown.
Some are made with the glass secured in the frame. If not, fix the glass in both frames with an epoxy resin adhesive. If the windows are sited in a vulnerable position, you may need to fit a grille or bars, though the better option would be complete replacement.
UPVC / PVCU
In many cases it is not possible to retro-fit any extra locks to UPVC windows. This is because the material used is not strong enough to support a metal lock fitted with steel screws. It could also damage the window and perhaps invalidate any existing warranty.
Double glazed window locking systems should be fitted at the time of manufacture. A general rule to follow is that the handle should not be the only means of keeping the window closed. The locking system should be fitted within the framework and the handle is used as a means of throwing or engaging the internal locking system.
Always consult the manufacturer/supplier before attempting to fit any extra locks. There are locks that can be fitted to UPVC casement windows, but only if there is no integral locking system within the framework, typically where the only means of security is a locking handle.
There are two main types of locking systems:
The first is espagnolette (multi-point) locking, which are bolts (normally 3 sets) set into the window and located into locking points in the frame when the handle is turned. The bolts should be mushroom headed so that they can engage behind the locking point, thus enabling the window to resist being forced apart from the frame. The second type is deadlock shoot bolts which locate into the frame at both opening side corners. There is also a deadlock which secures the opening side of the window at the handle. The window can also be fitted with high security friction hinges which locate into the frame on the hinge side. For additional strength sections of hardened aluminium or galvanised steel reinforcements should be fitted at the time of manufacture within the hollow profiles of the windows and frames, so that the locking systems can be secured through the UPVC frames into the reinforcements.
It is preferable for the windows to be fitted with internal beading to avoid the possibility of the glass being removed from the outside. There are some systems which have external beading but are secure because the glass is adhered to the frame or secured by special tamper-proof clips, but in most cases internal beading is preferable.
Lastly, if you are considering replacing your existing windows, look for the new British Standard 7950 kite mark. It has been established to set specific manufacturing standards of design and security for windows.
Secondary glazing
Though they are not installed these days, there are still many houses fitted with secondary glazing, mainly aluminium. Because of the narrow profile and intrinsic weakness of the frames, there is very little additional security which can be added. Such glazing has generally been fitted to wooden framed windows, which can be secured by a standard window lock.
However, sliding secondary glazing can offer additional security with the fitting of a key operated window lock clamp on the bottom rail of the frame. Particularly in hot conditions windows are left open to allow the circulation of air. This, inevitably, reduces the level of security. By fitting a sliding window lock to the bottom rail you can restrict the slide to a few inches.
Alternatively, drilling a small hole through the bottom rail at the point at which you wish to restrict the slider and inserting an appropriate sized bolt will suffice. Additionally, to prevent the slider being lifted, fit a wooden block of a suitable depth into the track above the slider. When used in conjunction with stay locks or child safety locks on the primary glazed window, security is enhanced further.
We sell all types of locks and keys at discounted prices through our WEB SHOP.
NORTH LONDON LOCKSMITHS LTD. SHOP UNDERTAKE ALL FORMS OF LOCK REPAIRS, KEY CUTTING, MASTERING AND PASSING OF LOCKS AS WELL AS SELLING ALL MAKES OF LOCKS.
IF YOU WOULD LIKE ANY ADVICE ON LOCKS OR ARE NOT SURE ON WHAT LOCKS YOU REQUIRE, PLEASE TELEPHONE OUR OFFICE ON 020 8800 6041.
A MEMBER OF OUR LOCKSMITH TEAM WILL ALWAYS BE WILLING TO HELP YOU.
As well as our Deadlock, Fitting and Rim Lock Fitting Service
WE OFFER.
* UPVC LOCK OPENING AND LOCK REPLACEMENT SERVICE
IF YOU WOULD LIKE ONE OF OUR LOCKSMITHS TO GIVE YOU A NO OBLIGATION QUOTE, OR OUR FITTER TO FIT THEM FOR YOU, FOR ANY WINDOW LOCK FITTING OR FOR ANY OTHER TYPE OF SECURITY ASPECT, PLEASE TELEPHONE OUR OFFICE ON THE NUMBER BELOW OR SEND AN EMAIL, OR FILL IN THE FORM BELOW, FOR ANY ESTIMATE.
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