Sash windows older than 20 years can have various issues such as rattles and draughts. They might also be inefficiently constructed to be insulated. With a little attention they can be restored to a higher level of performance.
First, take off the seal of paint using an utility knife. Remove the staff bead, pull out the upper sash and take out any chains or cords. Store the hardware in a container with the label.
Sealing
Sash windows look gorgeous in older buildings, but they require maintenance and can be subject to issues such as cracks in putty, wet rot, and draughts. It is possible to reduce energy loss and increase the efficiency of sash windows by replacing, repairing or sealing them.
Draughts are mainly caused by gaps between the sash and frame. window repairs can also trigger rattling and reduced sound-proofing. There are a variety of methods to reduce air leaks in the sash window, such as sealing beads, special 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 water leaking into the wood and rotting of the wood and growth of mould. Seal the gap using silicone, polyurethane or foam sealant.
If a gap in the window is preventing windows from closing and opening without a hitch, it might be necessary to replace sash runners or spring bronze. These bronze strips are attached by staples or nails to the lower sash edges to stop sideways rattling. They can be purchased at DIY stores. Tubular vinyl weather-stripping is an alternative option but it is prone to tear, and can affect the appearance of a window.
When replacing sash runners, it is important to take full measurements of the window opening. It is recommended to measure from the top of the sash up to the horizontal centerline on the rail of the meeting and from the bottom sash down to the sill. These measurements can then be transferred to new runners which will ensure the best fit and function of the window.
In older structures there is a greater gap between the sash and frame at the leading edge. It is possible to draught-proof it using strips of V-strip that is self-adhesive. However it is crucial to take this into account when cutting and measuring material.
The strip should be cut to the height of the sash and with an inch added on each side to allow movement. It should be squarely trimmed and positioned to match the angle of the sill. Use stainless steel screws as brass will be rusty. Also, use a high quality silicone or polyurethane glue.
Refurbishment
The sash is a beautiful, historical feature of many homes. However, despite their beauty windows like sash windows can be prone to a range of issues. The most frequent issues are rattling, draughts or sticking. And rotting frames and meeting rails, broken glazing bars, or damaged weights could cause a lot of trouble. If you experience any of these issues, it is time to replace or repair your sash.
Refurbishment can be more expensive than replacing the sash, however, it can restore the appearance and functionality to the same level that it was in its original form. Refurbishment involves lining both the meeting rail and the sash box using traditional putty and fixing any damage caused by decay. It also involves painting the frame with timber and reglazing with 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). Finally, it's recommended to fit brush pile weather strips to lessen rattle and increase insulation.
If the need for a new sash arises it can be constructed using similar designs to the frame of the previous one and preserve your property's heritage style. This is especially important for listed buildings where any modifications to windows require planning permission.
Before putting the new window on It is recommended to compare its metal tabs to those on the sash that was previously used (see below). If they're different shapes, the new sash will not fit in the slots of the window frame.
It is crucial to determine whether to repair or replace windows that are damaged, as each choice will require a different level and level of expertise. For instance the case of a sash windows that has a large chunk of glass missing, replacing it is the best choice. However when the glass is damaged in one small section or a sill has been decaying, a repair may be more appropriate.
Replacement
While a lot of homeowners are eager to keep their old sash windows in good working condition, deterioration could eventually result in problems like rattles, draughts or even broken glass. These issues often suggest replacement as the only feasible solution. However, there are ways to improve the sash windows beyond just replacing them, like installing draughtproofing and secondary glazing.
It is crucial to assess the severity of the issue, as it may not be feasible to replace a complete window. A foggy glass problem, for example is typically caused by the sash and can be addressed without having to tear out the entire frame. It is usually possible to fix a poor seal using a couple of simple fixes, rather than tearing out the entire frame and reinstalling it.
Sash windows are surprisingly complex in design and have many moving parts. This is why it can be a challenge to solve common issues like sash cords that are snapped or broken panes. Many homeowners do not want to remove the window frame to repair these issues. Because of this, many opt to hire an expert.

A specialist can assist in restoring windows with sash to their original splendor, or even bring them up to modern energy standards. This may include reconditioning the frames and fitting secondary glass to block heat from getting out of the window. It is also possible to put in an extra strip of brush pile to stop rattling and reduce drafts.
To begin a repair take out the window stops (the moldings that are in front of the lower sash). Then loosen the staff and remove the lower window sash. Remove the cords and chains from both sides. Then, remove the sashweights from the bottom of the cavity for weight. Keep the hardware in a safe position. The heat gun will soften hardened filler or putty. Scrape it off with a blade made of putty. Reassemble the window. Reattach the hardware. Lubricate the pulleys with Teflon or silicone spray. Install the parting beads and reinstall the upper sash.
Repair
It is crucial for the homeowner to make a choice on whether to replace or repair their sash windows. Although modern replacements offer many advantages, the original features of a home that was built earlier give personality and value to the property and are often cheaper to fix than replacing them. Maintaining them in good shape will also help you save money on energy. Sash windows are susceptible to drafts and rattles. This can result in higher energy bills and even damage to the frame and sash.
Sash windows can be difficult to open and close. The mechanism that slides can become sloppy or even draughty. It's best to leave the repair of a window sash to a professional because it requires extensive dismantling. With the right tools and knowledge it's possible for you to repair the old sash window yourself. Adam shows Jess the basics:
Making the window come apart begins with the removal of any security fittings on the front of the lower sash. Then, take off the staff bead. Then, remove the bottom sash. Then, pull out the cords or chains on both sides and tie them to prevent them being pulled back into the frame by the weights that are attached. The next step is to remove the upper sash. Unscrew the sash stoppers (a thin vertical strip of wood that supports the sash) and remove any painted-covered hardware. Pull the sash to reveal the weight balancing, that is a massive iron cylinder or lead that is enclosed in a concealed cavity and anchored by rope. To stop the sash from falling into the void pierce it with a nail and then let the weight go.
After the sashes have been removed, clean the jambs and the rails that meet. Remove the glazing bars and sash cords. Then employing a utility blade, remove any paint from the sash stop. Reattach the stops after the sashes are reinstalled. Use nails that are not large enough to puncture the weight of the balancing.
To reassemble the sash, place the top sash on its track first, and then the lower sash. Make sure that the sash stops are properly aligned with the frame, and then reattach the parting beads if needed. Reattach the sash cords or chains and attach the sash pulleys.