Casement Windows

Dublin’s Leading Suppliers of UPVC Casement Windows

With a range of practical openings, colours and choice of glass, we can create casement windows for your home as individual as you are.

Horizon Windows have been designing, supplying and fitting high-quality Casement UPVC Windows throughout Dublin for more than 30 years. You are assured of a guaranteed transformation of your home.

We probably make the most significant investment we’ll make when we buy our homes. Whether you are buying your first home, upsizing or downsizing at some point, you will want to improve that space. Finding a reputable experienced supplier who can provide the solution that’s right, is the first step in achieving your vision.


Our profiles can be combined to create the style of window to suit the type of your home. Whether your aim is to expand, refurbish or restore your property to its former glory we can help you. 

UPVC Casement Windows are traditional, open out, top or side hung openers. The size and style can be tailored to your openings according to the position of your window and the space available. We also have a wide range of colours for you to choose from:



  • A-Rated as standard 

Our A-Rated window range helps you contain and conserve energy, whilst increasing your home’s value.

  • Sound Insulation

To benefit and improve noise insulation, there are multiple chambered uPVC frames, weather seals, and double-glazing units.

  • Increased Security

Our high-security windows include multi-locking systems, double locking door handles and more to improve security.

  • Zero Upkeep

All our frames are tough, they will never crack, flake or go discoloured, saving you money on the upkeep.

  • Warmer Home

If you advance to A-Rated Windows, this will help with the loss of heat through your windows by up to 70%.

  • 10 Year Guarantee

We have confidence in our product and are happy to offer a 10-year guarantee on all our installations.

Find Inspiration

Look through our wide range of Apeer Doors