How to maintain your beautiful sash and case windows

Mar 22


Ca zPhillips

Ca zPhillips

  • Share this article on Facebook
  • Share this article on Twitter
  • Share this article on Linkedin

If you are lucky to have beautiful old timber-framed sash and case windows, you will need to carry out some maintenance to keep them functioning and looking fantastic for many years to come. We provide some top tips in sash window maintenance.


Sash and case windows are a classic and elegant feature in many older homes,How to maintain your beautiful sash and case windows Articles particularly in the UK. You will see them in most tenement flats in Scotland. They are comprised of two vertically moveable panels or sashes, which slide up and down to allow for ventilation. These windows are known for their charm and character, but they do require regular maintenance to keep them functioning properly and looking their best.

We have collated some top tips for maintaining your sash windows. These tips will keep them functioning properly and looking great for many years to come.


Ideally, you want to catch small issues with your windows before they become costly problems so we recommend inspecting them regularly. Most people do this when they are cleaning them. Check the condition of the window frame, sashes, and glazing. Look for signs of wear and tear, such as cracks or peeling paint. Check the operation of the sashes to ensure they slide smoothly and easily.


Regular cleaning will make a big difference to prolonging the life of your windows. Dirt and grime can build up on the frames and sashes, making them difficult to operate. Use a soft cloth and warm soapy water to clean the windows, and avoid using harsh chemicals that could damage the wood or finish.

The pulleys and sash cords are essential components of sash and case windows, as they allow for smooth movement of the sashes. Over time, these parts can become stiff or rusted, leading to difficulty opening or closing the windows. To prevent this, lubricate the pulleys and sash cords with a silicone-based lubricant. This will keep them functioning properly and prevent any damage.


If you notice any damage or wear, it’s important to address it promptly. Cracks or gaps in the frame or sashes can allow drafts and moisture to enter your home, leading to increased energy bills and potential water damage. Small repairs can often be made by a skilled DIYer, but larger or more complex repairs should be left to your local sash window repair professional.

One common problem with sash and case windows is that the cords that hold the sashes in place can wear out over time, causing the window to become difficult to open or close. If this is the case, the cords will need to be replaced. This is a delicate operation that requires skill and experience, so it’s best to hire a professional to do the job.

Another common issue with sash and case windows is that the glazing can become loose or damaged. If you notice any issues with the glazing, it’s important to have it repaired or replaced promptly to prevent further damage to the window.


The wood frame of a traditional sash and case window is usually painted or varnished to protect the wood. However, over time, the paint or finish on sash and case windows can become faded or damaged. This not only detracts from their appearance but can also lead to moisture damage and rot. To prevent this, repaint or refinish your windows as needed. This task is usually needed every 3-8 years depending on the the quality of the paint and the number of coats previously painted. At Eco Sash & Case in Edinburgh, we paint our sash windows with 3 coats using our top-grade, exterior paint system that outlasts conventional gloss paint treatments by up to 3 years. 

Sash Window Upgrades

There was a time when people were removing old timber-framed sash windows and replacing them with cheaper uPVC windows. Many people were attracted to these windows as they were cheaper but required virtually no maintenance. People also didn't realise that they could have their draughty old windows repaired and even upgraded.

Nowadays, we are realising that the original sash and case windows are far more aesthetically pleasing and it is more environmentally-friendly to maintain what we have rather than replacing them with more plastic.

Along with repairing rotting timber, fixing rattles and leaks, a good window repair company can also upgrade your windows to have double-glazing. This can make a huge difference to the warmth of your home and reduce your heating bills. 

If you live in Edinburgh or any of the surrounding areas, Eco Sash & Case can repair and refurbish any timber-framed windows to a very high standard.