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Window security in Bromley and Dartford to Maidstone and Sevenoaks

We know that any homeowner looking for replacement windows will be prioritising their home security, which is why every style of window that we install includes a variety of advanced window safety mechanisms as standard. They all meet strict building regulations and have passed the relevant security tests, giving you peace of mind that your family are safe and secure. Our range of window locks and hardware includes multi-point locking systems, robust handles and window restrictors. Take a look below to see how we make sure your new windows offer the highest form of home security.

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    Window handle locking systems

    Espag handles are the most common window handles found on double glazed windows these days. They tend to have a thin metal strip design with an easy opening mechanism that slides upwards to open the window. To secure your home, when the key is turned to lock the window, metal studs are located on the inner of the handle that slot into a plate in the window frame, meaning its bolted together. In the same way, when the window is unlocked, it releases the metal studs. Keyless non-locking window handles are also an option, featuring a user-friendly internal button that’s ideal for fire-escape windows where required.

    Our selection of window handles also includes pear drop handles, pendant handles, and monkey tail handles. They all function the same as an espag handle in terms of its security mechanisms to keep your home protected from unwanted intruders, but they usually aren’t key operated. These more distinctive window handles can incorporate both multi-point locks and shoot bolt locking systems.

    Interior uPVC tilt and turn window interior
    Window multi point lock

    Multi-point locks for your Kent home

    Multi-point locks are one of the most used locking systems in the industry because they’ve proven exceptional resilience and sturdiness that can withstand even the toughest forces. Most multi-point locks have 3 vertical slots, and when the window is closed shut, they securely bolt to 3 hooks on the window frame. In comparison to older windows that bolt at only one point, this provides much more protection for your home. As multi-point locks are reputable for their excellent levels of home security, they can even reduce your home insurance costs.

    Shootbolt window locks in Tonbridge, Rochester and Dartford

    A shootbolt lock works by extending either inwards or outwards at the top and bottom of the window, which securely pins it to the main window frame. The locking system includes adjustable mushroom cams, which tightly seals the windowpane to the frame, securing it together so that the window is much more resilient. As it's so precisely sealed, it helps to keep the weather elements out and stops draughts from entering your home.

    Window Shootbolt
    White uPVC flush sash bay window

    Beaded window frames

    Window beading is found along the outer edges of the window frame and its primary function is to hold the glazing firmly in place. If someone attempts to smash the frame, the beading provides protection from such forces so that the glass will stay tightly intact and is far less likely to smash.

    Our windows can be either internally or externally beaded, depending on how you would like the window to appear. If you opt for external beading, it will be seen on the outer of the window profile, with internal beading being incorporated to the inside of the frame.

    Some homeowners like the added decorative feature, but some like it to be hidden for a sleeker profile. External beading is popular on timber windows and heritage uPVC windows as it was commonly used on traditional windows, so you’ll be able to achieve the period style. Our more modern window designs are usually internally beaded for a slimmer window appearance.

    Double glazed window restrictors

    Window restrictors are usually an additional extra for casement windows, but they are also compatible with tilt and turn and bay windows. They are a security feature that controls how far a window can open, making them ideal for homeowners with young children. It is placed on the window frame, inside of your home, so it can’t be seen from the outside.

    We can also offer cabin hooks, concealed restrictor arms, cable restrictors and sash jammers. They work in the same way as a normal window restrictor, constricting the opening of the window yet letting fresh air to flow into your home.

    Window restrictor
    Close up of sliding sash window

    Sash window security features

    As sliding sash windows have a vertical opening mechanism rather than a typical outwards opening, they have their own range of security features.

    • Sash window locks/fasteners – these elements are fixed to the middle of the vertical sash and so when it’s locked, it stops the window from being opened, securely bolting the sashes to the main frame.
    • Sash window stops – these assist in both home security and ventilation. They can be found on both sides of the sash and restrict the opening of the sash so that you can let natural air in, without worrying about the opening being too large. This is an important element for families with young children and windows found on higher levels.

    • Meeting rails – this is the component where the top rail of the bottom window and the bottom rail of the top rail meet. They’re accurately fitted to slot tightly together so that the sashes can’t be moved or picked when closed.
    • Hook fasteners – this is an additional extra for sash windows and will add a decorative heritage appearance. They’ll also enhance the window’s sturdiness, locking the window firmly in place when fastened. When the window is opened, they allow for a small opening for ventilation, whist reducing the size of the opening.

    Your Window and Door Journey with FineLine

    Replacing your windows and doors is easy.


    Choose the right windows and doors

    Fill out a form online or visit one of our 11 showrooms to see our range of high-quality windows and doors up close and speak to our expert team for any advice on materials, styles, colours, energy efficiency and glazing. Once you are happy with your choice, we’ll provide you with a free no-obligation quote.


    Place your order with us

    When you want to go ahead with your order, the details have been approved, and we have received your order deposit, our administration team will provide your contract to a surveyor.


    Your surveyor assessment

    The surveyor will contact you to arrange a date that is convenient to come to your home and review the project scope, take accurate measurements and discuss any other matters that need to be considered. We will then confirm the surveyor’s assessment.


    Confirm an installation date

    Our installation department will contact you to arrange a date for your window and/or door installation and your products will be ordered and manufactured, using cutting-edge techniques and industry-leading materials.


    You're ready for your installation

    On the day, our skilled team will arrive at the agreed time to install your products, ensuring minimal disruption. They’ll explain the locking and opening systems and share maintenance tips to keep your products looking brand new. Once your installation is complete, we will contact you to confirm that everything has been finished.

    Begin Your Project

    Get your free quote – with no-obligation to buy. Simply fill in the form below to get started:

      By submitting your details you confirm that you agree to the storing and processing of your personal data by FineLine as described in the privacy statement.


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      Multi-award winning company

      Here at FineLine, we’re proud to have won many prestigious awards for our products as well as our work in the community:

      Installer awards 2022
      G21 Finalist
      SEHBAC showroom winner
      Ultraframe designer winner
      Conservatory and orangery awards winner 2019
      NHIC 2018 Consumer confidence award
      G17 Installer of the year
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      Improving South East homes for more than 50 years

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