Sliding sash windows vs casement windows – Top 7 differences

If your window frames and glazing have passed their best in both performance and appearance, have you considered installing another window style? Instead of replacing ‘like-for-like’, it’s worth investigating alternative window styles out there as they could enhance space and light further compared to your existing window style. Even better, they’re sure to increase kerb appeal and could even add more value to your property, depending on the size and design.

With this in mind, it’s time to introduce you to our two most popular window styles and seven top differences that set them apart.

Versatile casement windows

Available with uPVC, aluminium, or wooden effect frames, walk down any street in Kent and you’re sure to spot this popular window style almost immediately. Featuring a hinged side on the left, right, top, or bottom of the window, casement windows typically swing outwards and firmly lock into place on the non-hinged side of the frame.

Sophisticated softwood sliding sash windows

Installed with either uPVC or timber frames, sliding sash windows are a prominent sight in Georgian, Victorian and Edwardian-era properties throughout Maidstone and Kent. Also used to add unique heritage character to new build homes in the South East, sliding sash windows consist of one or two moving panels that slide up and down using modern-day spring balances – instead of the traditional corded arrangement, for ease.

Are casement windows more secure?

When it comes to security, casement windows are often thought as the more secure choice. Compared to old sash windows, modern casement windows are definitely the most secure. However, state-of-the-art vertical sliders (like ours!) feature window locking systems that exceed building regulations; making them just as secure as casement windows.

Are casement windows more energy efficient?

Out of all the window styles, apart from fixed windows that do not open, casement windows are considered the most energy efficient window style as they have seals positioned all around the frame, helping them to fit as tightly against the frame as possible. Again, compared to old, draughty sash windows, modern casement windows keep much more heat and warmth inside. That said, our stylish sliding sashes can achieve some of the best energy ratings possible, offering U-values as low as 0.8 W/m2K and A+ energy ratings.

What are the differences between casement and sliding sash windows?

As we’ve mentioned above, the main difference between these striking window designs is the way they open and operate. Both provide ample swathes of light and ventilation and can be enhanced further with tough comfort glass, 150+ RAL colours and various natural woodgrain options and extras like Georgian bar detailing, but that’s where the similarities end. For ease, we’ve put together a comparison table to highlight the differences and help you decide which style is best for you and your home.

	Casement windows	Sliding sash windows
Energy Efficiency	A++	A+
Security	Multipoint locking system	Modern sash window locking system, including lock fasteners, stops & meeting rails
Arrangements/extras	Single, double, outward opening, inward opening, awning (top hinged), hopper (bottom hinged), bay window casements, bow window casements, fan lights, bespoke	Single hung, double hung, Georgian (six over six pattern), Victorian (two over two), Edwardian (six over two), arched, sliding sash bay windows, sliding sash bow windows, sash horn detailing, bespoke
Handles & hardware	Espag key lock crank handle	Sash window lifts & D-handles
Cleaning	Move windows along the hinge track to allow for easy cleaning on the outside	Innovative safety latches allow the sash to tilt inwards for safe & easy cleaning
Suitability	Any property style	Heritage property stylings

Are sash windows more expensive?

Our casement windows work out slightly cheaper than our sliding sash window products. But if you’ve set your heart on elegant sliding sash windows, there’s no need to worry, as our interest-free home improvement finance options are sure to accommodate your needs.

Superb sliding sash timber windows & adaptable casement windows in Kent

If you’re still undecided on new window replacements, visit your nearest FineLine show centre, call us on 01622 631 613, or contact us to discuss you needs further with a local double glazing company that truly cares.