Welcome to Preservation Windows, we are the leading sash and case window specialists across Glasgow and Scotland. We are extremely proud of what we have accomplished and since establishment we have gained a well-earned reputation among architects, developers and homeowners for a service that is of the highest quality and exceptional standards.

The experienced team at Preservation Windows are committed to elevating your sash and case windows to achieve heat retention and energy efficiency while retaining the character of your period home.  

All of our sash windows are manufactured at our Glasgow-based workshop in Cumbernauld, Scotland by our expert tradesmen. The process at Preservation Windows couldn’t be simpler, initially we come and visit you to measure the size of the windows then our expert craftsmen manufacture your sash and case windows to your exact requirements and measurements making them truly bespoke to you. Our joiners then build your windows and sand them down to create a smooth finish. Finally you choose the finish of your windows out of our vast selection. That’s not all, our expert installers will deliver and install your new windows on a day that’s best for you.

If you are unsure whether sash and case windows are right for you, feel free to drop by our show flat in Glasgow's West End and our company Director Brendan will be able to answer any of your queries. Alternatively we can come and visit your home and give you a free quote for your windows, arrange a date with Brendan today!

  Transform Your Home


  • Put an end to draughts

  • Add value to your property

  • Reduce your carbon footprint

  • Retain your home's period charm

  • Support your local economy (made in Scotland) 

  • Say goodbye to windows that are hard to open and close

  • Save money by improving the energy efficiency of your home

“Our experience with Preservation Windows was a complete joy from start to finish.
The windows are fantastic and the professionalism and work ethic is
second to none, thank you.”
— Mr. & Mrs. Ireland