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The complete guide to casement window hardware

April 25, 2023

Understanding casement window hardware – Why is it important?

When you’re asked what the most popular window type is in the UK, we’re willing to bet ‘casement’ is one of the first answers that springs to mind.

A stylistic fit for old and modern buildings, their practicality, versatility, and reliability, make them a sought-after design solution for all manner of projects.

And they’re not going anywhere. Destined to be a firm favourite for many years to come, it’s imperative you know the ins and outs of these in-demand windows, because at some point, you are going to be quizzed on them. 

Now, telling a customer that casement windows first appeared in the UK in the 18th Century is absolutely fine, but that’s not going to offer them much in the way of reassurance when it comes to security or durability. 

The hardware that makes up a casement can be the difference between a high-quality, energy efficient window that’s safe and secure, and a substandard one that lets cold air in, and is extremely vulnerable. 

Explaining these features will not only put a person’s mind at rest, it will reassure them that they are getting the very best product.

Casement Window Hardware – Deconstructed  

  • Window Hinge. Casement windows open and close on a hinge. These tend to be located on the left or right hand side, enabling the window to swing outwards, although windows can also be hinged to open out from the top (awning) or the bottom (hopper). The hinge is without doubt one of the most important features of a casement window. A poor-quality hinge will inevitably affect the lifespan of the product, while one that is poorly fitted will result in a less than smooth opening motion. An in-built restrictor hinge is also an option, which will help keep outward-opening windows in place during strong winds, and also restrict opening distance if child safety is a concern.
  • Crank Arm. Casement windows provide excellent insulation for homes and buildings thanks to their flush-fitting design. How airtight they are though can depend on the quality of the opening/closing mechanism. Traditional casement windows use a sill-mounted crank arm. This connects to the gear of the operator, and when rotated, will open the window. Crank handles need to be regularly maintained in order for a window to retain its airtight seal, and hassle-free opening operation. Other handle types include ‘cockspur’ and ‘espagnolette’, the latter of which is more commonly used on modern windows.
  • Locks. While locks are not necessarily needed on casement windows – the frame is tightly sealed, and the window can only be opened from the inside – we do recommend installing them for optimal security. Casement windows are available with a variety of lock types, ranging from a simple latch to a more secure multi-point locking system. Bars can also be added, if for instance a homeowner wants an extra layer of protection.
  • Seals. The last thing any homeowner wants is cold air finding its way into their property, or warm air escaping. This is why sealing plays such an important role in window construction. The thermal performance of a casement window is directly linked to the amount of energy a homeowner uses, which means it can have a big impact on the cost of living. Well-sealed windows will keep rain, wind, dust, and noise out, ensuring a building remains comfortable, energy efficient, and in good condition.

What projects are casement windows most suited for?

The supreme functionality of casement windows makes them an appealing proposition for an extensive range of projects.

They truly are one of the most versatile styles on the market, and this is reflected in the number of different buildings you will see them on up and down the country.

Contemporary or traditional, home or office block – casement windows are suitable for almost all projects, thanks to the fact they can be easily customised to any homeowners or developer’s liking.

That’s certainly the case with VEKA Casement Windows, which offer unlimited options for personalisation while boasting high-quality security features, impressive energy efficiency, and superb ventilation. 

This is backed up by the fact they carry the BSI Kitemark certification of quality, hold 10-year guarantees, and meet the stringent testing requirements of PAS 24.