Sash Windows Repair and Replacement

Older sash windows may suffer from a range of issues, including draughts rattles, and poor insulation. A little care can often bring them back to their original performance.

First, remove the seal with a utility knife. Then, remove the staff bead, then remove the upper sash, taking off chains or cords and storing the equipment in a bag labeled.


Sash windows look gorgeous in old buildings but they require maintenance and are susceptible to issues like cracked putty, wet rot and drafts. It is possible to decrease energy loss and improve the efficiency of sash windows by replacing, repairing or sealing them.

The gaps between sash and frame are the main source of drafts. They can also trigger noise reduction and rattling. Various methods can be used to stop air leaks from windows with sash, including sealing beads, specialist products and secondary glazing.

A common issue is a gap between the top of the sash and the jamb frame, or between the bottom of sash and the sill. This can cause moisture to leak in, rotting wood, and mold growth. The gap can be sealed with caulking made of polyurethane or silicone or double Glazed windows Repair foam sealant.

Installing new sash runner or spring bronze might be required if a gap prevents the windows from opening and shutting smoothly. These are strips of bronze that are stapled or nailed onto the edges of the lower sash to prevent sideways rattle, and they can be purchased from DIY stores. Tubular vinyl weather-stripping is another option however it can rip, and it can detract from the appearance of windows.

It is essential to take measurements of the entire window opening prior to installing a an alternative sash runner. It is recommended to take measurements from the top of the sash up to the horizontal centerline of the rail that connects it, and from the bottom of the sash to the sill. These measurements can be incorporated into the new runners, which will help ensure a proper fit and a better performance of the window.

In older structures, the gap between sash and frame is usually larger around the leading edge. It can be draught-proofed with a strip of self-adhesive V-strips, but it is essential to take this into consideration when measuring and cutting the material.

The strip should be cut to the height of the sash and with an inch more on each side to allow movement. It should be squarely trimmed and positioned to align with the angle of the sill. Make sure to use stainless steel screws since brass will be rusty. Also, make sure to use high-quality silicone or polyurethane glue.


The sash is an attractive historic feature in many homes. But despite their beauty, these windows are susceptible to a myriad of issues. Common problems include rattling, stuck or draughty windows. Frames that are rotting and rails that meet, as along with broken glazing bars, defective frames, or rotten weights are all causes of problems. If these issues occur, it’s time to consider a sash repair or replacement.

Refurbishment is more expensive option than simply replacing the sash itself but it will restore the look and function of your sash window the same or better than the original condition. Refurbishment involves lining the meeting rail as well as the sash box using traditional putty, and then repairing any damage caused by the rot. Re-painting of the timber frame is also included, as is glazing using traditional glass. A full refurbishment can also include adding draught proofing, re-attaching the sash furniture/ironmongery and replacing the parting bead (the dividing strip between the two panes of glass). In addition, it is recommended to fit brush pile weather strips to reduce the rattling and increase insulation.

If a new sash is required it can be constructed from similar designs to the old frame and maintain the style of your home’s historic design. This is particularly crucial for listed homes where any changes to double glazed windows repair (Click At this website) will require planning permission.

Before you put the new window on It is recommended to examine its metal tabs with the tabs on the old sash (see below). If they’re different shapes, the new sash will not fit properly into the window frame slots.

It’s important to decide whether to repair or replace windows that are damaged, as each will require a different degree and level of knowledge. For example when a sash window has a large piece of glass that is missing, then replacing it is the best option. But when the glass is damaged in a small area or a sill has been decaying, a repair window may be more appropriate.


Many homeowners want to keep their old sash windows in good condition, but the deterioration of the window will eventually cause issues like draughts or rattles. Broken glass may also occur. This is why it’s often the only solution to these problems. There are other options to improve sash window performance other than replacing them. This includes installing secondary glazing and draughtproofing.

It is crucial to assess the severity of the issue, as it may not be appropriate or even feasible to replace a complete window. A glass that is foggy, for example, is usually caused by the sash, and can be addressed without having to tear out the entire frame. A weak seal can often be remedied with a few simple fixes instead of a costly full-frame tear-out and replacement.

Sash windows feature a complicated design with a lot of moving parts. This is why it can be tricky to remedy some common problems like sash cords that are snapped or broken panes. Solving these issues usually requires dismantling the window frame, which isn’t something that most homeowners want to tackle themselves. Because of this, many homeowners choose to work with a specialist.

Specialists can restore sash window frames back to their original splendor or update them to meet the latest energy standards. This may include reconditioning the frames and installing secondary glass to stop heat from escaping through the window. It is also possible to add a brush-pile strip in order to minimize drafts and prevent the window repair near me from shaking.

To begin the repair, remove the window stops. (The moldings that are on the side of the lower glass). Then you can loosen the staff, and pull out the lower window sash. Take the chains and cords from both sides. Then, remove the sash weights from bottom of the cavity and remove them. Keep the hardware in a secure position. Soften any old filler or hardened putty using a heat gun, and scrape it away using a putty knife. Reassemble the window, reattach the hardware and lubricate the pulley axles using silicone or Teflon spray. Install the parting beads again and then reinstall the upper sash.


It is important for the homeowner to make a choice on whether to replace or repair their sash windows. Although modern replacements offer numerous benefits but the original features of an older home add personality and value to the property and are generally less expensive to repair than replacing them. Maintaining them in good condition can also save energy costs. Sash windows can be susceptible to rattles and drafts. This can lead to more expensive energy bills and can damage the frame and the sash.

Sash windows are notoriously difficult to open and close and the standard sliding mechanism may become displaced from its track, or even draughty. Repairing a sash window involves extensive dismantling of the frame of the window and is best left to the professionals. With the right tools and knowledge it’s possible to repair an the sash window that is old. Adam shows Jess the basics:

Making the window come apart starts by removing any security fittings on the front of the lower sash. Next, take off the staff bead, then take the sash off the bottom. Then, pull out the chains or cords on both sides and tie the ends to stop them from being pulled back into the frame by the attached weights. It’s time to take off the upper sash. Unscrew the sash stoppers (a thin vertical strip of wood that holds the sash) and loosen any painted-covered hardware. Reverse the sash to reveal the weight. It is a large iron or lead cylinder, which is tucked away inside a cavity and held by a cord. To keep the sash from falling into the void, hit it with nails and remove the weight.

After the sashes are removed, clean the jambs and rails that connect them. Remove the glazing bars and cords for the sash. Then, using a utility blade take off any paint that is on the sash stop. Reattach the stops once the sashes have been put back in place. Use nails that are not large enough to puncture the balancing weight.

Reassemble the sash by placing the upper sash first into its track, then the lower sash. Check that the sash stops and the frame are aligned properly. If needed, reconnect any beads that are parting. Reattach the sash chains or cords and install the sash pulleys.