14 Common Misconceptions About Sash Windows Repair
Sash Windows Repair and Replacement
Sash windows that are older than 20 years may have various issues that include rattles and draughts. They could also be poorly insulation. With a little attention, they can be restored to their original performance.
First, take off the seal with a utility knife. Then remove the staff bead, then pull out the upper sash by removing chains or cords, and then storing the hardware in a bag marked.
Sealing
Sash windows look stunning in older buildings, but they require care. They can be affected by issues such as wet-rot, cracked putty and draughts. Sealing, replacement or repair of the sash window is an effective method to minimize these issues and increase energy efficiency.
Draughts are mainly caused by gaps between the sash and frame. They can also lead to noise reduction and rattling. Sealing beads, specialist products, and secondary glazing may all be used to reduce the air leakage inside a shutter.
A common problem is a gap between the top of the sash and the jamb frame or the bottom of the sill and the sash. This can result in moisture leaking in, rotting of the wood and growth of mould. Seal the gap using silicone, polyurethane or foam sealant.
Installing a new sash runner or spring bronze may be required when a gap is preventing the windows from opening and shutting smoothly. These are bronze strips that are stapled or nailed onto the edges of the lower sash in order to prevent sideways rattle, and they can be purchased from DIY stores. Tubular vinyl weatherstripping can also be used, but it is prone to tear and can detract the appearance of your window.
When installing replacement runners for sash It is crucial to measure the entire width of the window opening. It is best to measure from the top of the sash up to the horizontal centerline of the meeting rail, and from the bottom of the sash to the sill. These measurements can be transferred to the new runners, which will help ensure a good fit and a better performance of the window.

In older buildings there is a greater gap between the sash as well as the frame at the leading edge. It can be draught-proofed by a self-adhesive Vstrip, however it is important to consider this when measuring and cutting the material.
A strip must be cut to the length of the sash, with an additional inch on each side to allow movement. It should be trimmed squarely and placed to align with the angle of the sill. Use stainless steel screws since brass can be rusty. Also, use the highest quality silicone or polyurethane glue.
Refurbishment
The sash window is an elegant and historic feature of many homes. They are beautiful however they are susceptible to issues. The most frequent issues are rattling, draughts or sticking. Also, rotting frames, meeting rails, broken glass bars, or damaged weights could create a mess. If you experience any of these problems it's time to replace or repair your sash.
window repairs is more costly than replacing the sash but can restore the appearance and function to the same level that it was in its original form. Refurbishment involves lining both the meeting rail and the sash box with traditional putty and fixing any damage caused by the rot. Re-painting the frame of the timber is also included, as is the re-glazing process 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). Finally, it's recommended to install brush pile weather strips in order to minimize the rattling and increase insulation.
If a replacement sash needed it can be constructed with the same design to match the frame you have. This will maintain the style and character of your house. This is particularly important for listed buildings where any changes to the windows require planning permission.
Compare the metal tabs on the new window to the old sash before installing it (see below). If they're different shapes and sizes, the new sash will not fit inside the window frame slots.
It's important to decide whether to repair or replace the damaged window, since each will require a different degree and cost of expertise. If a significant portion of the glass in a sash is missing, then replacing it will be the better alternative. If the glass is damaged in a tiny area or a sill is rotting and needs to be repaired, then a repair will be better.
Replacement
Many homeowners want to keep their old sash window in good condition, but the deterioration of the window will eventually cause issues such as rattles or draughts. Broken glass can also occur. This is why it's often the only solution to these problems. However, there are other ways to improve the sash windows, beyond simply replacing them, like installing draughtproofing and secondary glazing.
Think about the scope of the problem. It might not be necessary or appropriate to replace the window. For instance, a foggy glass issue is usually a problem in the sash itself and is typically a solution without having to tear out the entire frame. A weak seal can often be remedied by a few easy fixes rather than an expensive full-frame tear-out and replacement.
Sash windows are quite complex in design and feature lots of moving parts. It can be a challenge to fix some common problems such as broken panes, or snapped sash cables. Many homeowners do not want to remove the window frame in order to repair these issues. This is why many opt to hire a professional.
A specialist can assist in restoring sash windows to their original splendor or even bring them up to the latest energy standards. This can include reconditioning the frames and fitting secondary glazing, which will stop heat loss out of the window. It may also be beneficial to add a brush pile strip, to stop rattling and reduce drafts.
To begin a repair, remove the window stops (the moldings in front of the lower sash). Next, remove the staff bead and pull out the lower sash. Remove the chains and cords from both sides. Finally remove the sashweights from the bottom cavity of the weight. Store the hardware in a safe place. The heat gun will soften old, hardened filler or putty. Scrape it away with a blade made of putty. Reassemble the window, attach the hardware and lubricate the pulley axles using silicone or Teflon spray. Install the parting beads again and then reinstall the upper sash.
Repair
It is crucial for the homeowner to make a choice on whether to repair or replace their sash windows. While modern replacements provide many advantages, the original features of an older house give authenticity and value to the property and are often cheaper to repair than replacing them. Maintaining them in good condition can help save on energy costs. Sash windows are prone to rattles, drafts, and condensation, and these issues can lead to higher cost of energy and damage to the frame and the sash.
Sash windows can be a challenge to open or close. The mechanism that slides can be slack or draughty. Repairing a sash window involves extensive removal of the frame of the window and is best left to a professional. However, with the right tools and experience it's possible to fix old windows with sash yourself. Adam shows Jess how to start:
Remove any security fittings that are just in front of the lower window sash. Next, take off the staff bead, then remove the bottom sash. Remove the chains and cords from both sides, and tie them in a way that they can't be pulled back by the weights attached. The next step is to take out the upper sash. The sash stops must be removed, a thin vertical strip of wood that holds the sash. Also, take off any painted-covered hardware. Reverse the sash to reveal the weight. It is a heavy iron or lead cylinder that is hidden inside a cavity and supported by a cord. To stop the sash from falling into the void, you must pierce it using a nail, and sacrifice the weight.
After the sashes have been removed, clean the jambs and rails that connect them. Remove the glazing bars as well as the cords for the sash. Then employing a utility blade take off any paint from the sash stop. Reattach the stops after the sashes have been reinstalled. Use nails that are small enough not to puncture the weight of the balancing.
To reassemble the sash put the top sash into its track first, and then the lower sash. Check that the sash stops and the frame are aligned correctly. If necessary, reattach any beads used for parting. Reattach the sash chains or cords and attach the sash pulleys.