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Sliding Sash Windows

Helping to add a traditional touch to both properties new and old, sliding sash windows from the team here at RealSeal Home Improvements offer the effortless sliding functionality the style is known for, with the added benefit of modern performance. Complete with configurable astragal bar patterns, every sliding sash window comes made to measure each time.

Effortless sliding sash windows in low maintenance uPVC

Sliding sash windows differ from casements in the sense that they feature a central sash that slides upwards rather than outwards conventionally. This makes it easier for homeowners to more quickly and efficiently ventilate their home whenever the temperature demands, bringing living spaces subtly closer to the natural beauty of the outside.

All come expertly engineered in high performance uPVC profile, meaning that there is simply no need for regular amounts of upkeep. A far cry compared to the original timber box sash windows of old. If you’re someone who wants to benefit from the best of both classic design and innovative function, RealSeal Home Improvements’ low-maintenance and rattle-free sliding sash windows are a great choice.

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A rated energy efficiency

Saving money on energy bills and keeping properties comfortable


High security guaranteed

SAC multi-point locking as standard for peace of mind


Range of colours & styles

Highly configurable to create a wholly distinctive aesthetic

Environmentally friendly windows that mimic traditional timber

Unlike most methods of engineering timber windows, our modern sliding sash variants are manufactured in such a way that is entirely eco-friendly and sustaining. This makes them ideal for the environmentally-conscious homeowners who wish to enjoy the inherently classic style and modern performance, while also reducing their carbon footprint.

Contributing towards our sliding sash windows’ historical style are various authentic sash details such as configurable astragal bars, slim-meeting rails, and stylish hardware. Our team take the extra time, care, and attention needed to apply these features, all while installing a unit that is still able to perform exceptionally well to modern standards.

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A Rated as standard with multiple colour finishes

As with all our window styles, all sliding sashed come supplied and installed to achieve the highest window energy rating (WER) of A. This ensures that your home will benefit from peak levels of energy efficiency, with all sliding sash windows coming watertight to stamp out draughts and heat leaks. You’ll rely less on artificial heating methods, instead locking in on warm and saving money on energy bills.

All our sliding sash windows deliver unparalleled style as well as performance too, largely thanks to the extensive suite of standard and non-standard foil finishes that can be applied to the frames. Everything from Chartwell Green and Anthracite Grey to traditional Rosewood and Golden Oak all work wonders in terms of projecting a unique style, taking your sliding sash windows from good to great.

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