Window Restrictors – Child Safety Window Restrictors

//Window Restrictors – Child Safety Window Restrictors

Window Restrictors – Child Safety Window Restrictors

Window Restrictors - Child Safety Window Restrictors - Window and Door Parts Ireland

Window restrictors are devices that are fitted to windows, which prevent the window from opening more than a few inches. They are generally used as a safety device, to stop small children opening a window and accidentally falling out.

Irish Building Regulations and Window Restrictors

To comply with Irish building regulations a window restrictor must releasable and cannot be locked by a key. This is to ensure that in an emergency situation, that a person can simply release the restrictor and use the window as means of escape or rescue. This makes perfect sense. In a panic situation, spending precious moments searching and fumbling around for a key to release a restrictor or a handle could mean the difference between life and death. The below excerpts are taken from the Irish Technical Guidance Documents (Building Regulations):

Part K – Stairways, Ladders, Ramps and Guards Section 2.7. states the following:

In dwellings where a window has an opening section through which a person may fall, (having particular regard to children under five years old), and is more than 1400 mm above external ground level, suitable safety restrictors should be provided.

Safety restrictors should restrain the window sufficiently to prevent such falls. Restrictors can be either an integral part of the window operating gear or separate items of hardware which can be fitted to a window at the time of manufacture or at installation. Restrictors should operate so that they limit the initial movement of an opening section to not more than 100 mm.

Window Restrictors Irish Building Regulations - Window and Door Parts

Part B – Fire Safety (2017) states the following:

The opening section of the window should be secured by means of fastenings which are readily openable from the inside. In certain circumstances safety restrictors may be fitted to such windows see TGD K Section 2.7. Lockable handles or restrictors, which can only be released by removable keys or other tools, should not be fitted to window opening sections for escape or rescue.

Learn more about the building standards and regulations from the official government site but ultimately there is a big push to bring rented accommodation up to standard by retro fitting window restrictors.

Mila Window Restrictors - Child Safety Window Restrictors - Window and Door Parts

Window Restrictors for Rented Houses – Now A Requirement

From the 1st of July 2017 the HOUSING (STANDARDS FOR RENTED HOUSES) REGULATIONS come in to effect, which mirrors the above building regulations. Landlords will now have to ensure that the windows in their rented accommodation have restrictors fitted.

In summary, locking a window handle with a key or fitting a restrictor that requires a key to release it will not comply with the building regulations.

Mila Window Restrictors – Compliant and Safe

If you need to upgrade or add window restrictors to your house or rental property then the Mila Window restictor is worth considering. The Mila window restrictor ticks all of these boxes:

  • It can be easily retro fitted to uPVC, aluminium and timber windows.
  • It is releasable, simply pull the window sash towards you and then flick the restrictor off with you other hand.
  • It is discretely fixed to the window frame and sash. It is hidden when the window is closed
  • It automatically catches and restricts the window opening every time the window is opened
  • It limits the window opening to 75mm – 100mm (3” to 4”).

How To Install A Window Restrictor

Watch our instructional video below to see how to a Mila Window Restrictor on a uPVC window

Sash Jammers For Tilt & Turn Windows

The Mila restrictor will suit the vast majority of windows, but there are some types of windows that it doesn’t suit eg. Tilt & turn windows. A sash jammer can be used on Tilt & Turn windows or on rebated timber and uPVC doors as an additional security device or as a window restrictor. You can view our sash jammers here.

Window Restrictors – Expert Advice

Over the years we’ve installed and sold countless window restrictors and have encountered every type of window possible. As such, please contact us online or comment below if you have any questions about window restrictors and their suitability for your windows.

By |2017-08-25T18:34:44+00:00August 25th, 2017|Categories: Window Locks|11 Comments

About the Author:

My name is Paddy Cuddihy and I am the owner of I have over 10 year experience in the window and door trade. Specialising in window and door repairs and servicing, both commercial and domestic – Pvc, aluminium, timber, alu-clad. You name it, I’ve repaired it. I graduated from Waterford Institute of Technology with a Degree in Building Services Engineering and I am a PSA (Private Security Authority) licensed locksmith. If you have any questions relating to windows and doors, I'll be more than happy to answer them.


  1. Sarah Ryng 15th November 2017 at 3:43 pm - Reply

    Just wondering do you still install window restrictors or would you know someone in the Cork area that could do 7 upstairs windows for me please?

    • Patrick Cuddihy 16th November 2017 at 9:40 pm - Reply

      Hi Sarah, I only have a fitting service in Kilkenny and Carlow. I’m afraid i don’t know anyone in the Cork area that i could recommend.

  2. Rose 5th January 2018 at 4:47 pm - Reply

    Patrick, The upvc windows open out at the top are your Mila restrictors suitable for them? If not what do you have ones that are? Rose, Cork City

    • Patrick Cuddihy 8th January 2018 at 10:50 am - Reply

      Hi Rose, could you send me some pictures of your windows. I’ll let you know what would be suitable. You can fill out the contact form and i’ll reply back

  3. Michael Looney 16th April 2018 at 2:56 pm - Reply

    Hi Paddy I see video on fitting restrictor to window. If left hand restrictor is correct when fitted to bottom of window does this change to right hand restrictor if fitted at top of same window which is hinged on right side.

  4. Brian 20th May 2018 at 3:44 pm - Reply

    Hi Paddy

    what size and type of screws should you use with the Mila restrictors ?



  5. Angela 28th May 2018 at 10:59 am - Reply

    Hi, I am wondering about what restrictors I can use for Velux windows which are compliant with housing and rented property standards 2017 legislation. I can only seem to source device opened restrictors and understand that this does not comply.

    • Patrick Cuddihy 12th June 2018 at 11:06 pm - Reply

      Hi Angela,
      A cord / cable type restrictor would most likely be the only type that would work on a Velux window. I will be stocking these soon.

  6. sean coleman 13th October 2018 at 12:20 pm - Reply

    Do i need to put window restrictors on windows which are well above the climable height of children is there a height above the cill/

    • Patrick Cuddihy 15th October 2018 at 6:12 pm - Reply

      Hi Sean,

      These are the guidelines:
      “Where a window has an opening section through which a person may fall, and the bottom of the opening section is more than 1400mm above external ground level, suitable safety restrictors shall be fitted. Safety restrictors shall restrain the window sufficiently to prevent such falls.”

      It is left up to your own judgement whether the opening is big enough, or accessible enough that a fall might occur.

      Hope that helps
      Best Regards

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