Sash Windows Repair and Replacement
Older sash windows suffer from a range of problems including draughts, rattles, and poor insulation. A little attention can often restore them to a top level of performance.
First, take off the seal of paint using an utility knife. Remove the staff bead, then pull out the upper sash, and remove any cords or chains. Keep the hardware in a container with the label.
Sealing
Sash windows are gorgeous in older buildings, but they require regular maintenance. They are susceptible to issues like wet-rot, cracked putty and draughts. Repair, sealing, or replacement of the windows sash is an effective method to minimize these issues and improve energy efficiency.
The gaps between sash frame are the primary cause of drafts. They can also cause noise reduction and rattle. Sealing beads, specialty products, and secondary glazing may all be used to minimize the air leakage within a sash.
A common issue is a gap that exists between the top of the sash and the jamb frame, or between the bottom of sash and the sill. This can cause moisture leaking in and rotting of the wood, and mould growth. Seal the gaps with silicone, polyurethane, or foam sealant.
If a gap is hindering windows from opening and closing smoothly, it may be necessary to install new sash runners or spring bronze. These are bronze strips that are stapled or nailed into the edges of the lower sash to stop sideways rattle, and they can be purchased at DIY stores. Weatherstripping made of tubular vinyl can also be used, but it is more likely to tear and can alter the appearance of your window.
When installing replacement sash runners it is essential to take full measurements of the window opening. It is recommended to measure from the top of the sash to the horizontal centerline of the rails that meet, and from the bottom of the sash to the sill. These measurements can be transferred to new runners, which will ensure a better fit and operation of the window.
In older structures there is a greater gap between the sash as well as the frame at the leading edge. It is possible to draught proof by using a self-adhesive Vstrip, however it is essential to account for this when cutting and measuring the material.
A strip must be cut to the width of the sash, with an additional inch to allow movement. It should be trimmed to a square shape and then positioned in a way that the ends are aligned to the angle of the window sill. Use stainless steel screws as brass can be rusty. Also, make sure to use the highest quality silicone or polyurethane glue.
Refurbishment
The sash is a stunning historical feature of a lot of homes. However, despite their beauty these windows are susceptible to a myriad of issues. The most frequent issues are rattling, draughts or sticking. Frames that are rotting and rails that meet, as and broken glazing bars, defective weights or rotten frames are all causes of problems. If you encounter any of these issues it's time to replace or repair your sash.
Refurbishment can be a more costly alternative than replacing the sash itself however, it can restore the look and function of your sash window as good, if not superior to its original state. It involves lining the joining rail and sash box using traditional putty and fixing any damage caused by 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 repairing glass). Finally, it's recommended to fit brush pile weather strips in order to minimize the rattling and increase insulation.
If a replacement sash is needed, it can be made with the same design to match your old frame. This will help preserve the traditional style of your house. This is especially important for buildings that are listed, as any changes to the windows will require planning permission.
Compare the metal tabs of the new window to the old sash before installing it (see below). If they're different sizes, the new sash will not fit into the slots of the window frame.
If a window is damaged, it is crucial to decide between repair or replacement because each type of work will require a different level of expertise and expense. For example, if a sash window has a significant piece of glass missing then a replacement will be the best choice. If the glass is damaged in a tiny area or a sill is rotting or rotting, then a repair could be more appropriate.
Replacement
Many homeowners want to keep their old sash windows in good condition, but it is inevitable that deterioration will cause problems like draughts or rattles. Broken glass can also occur. This is why replacing sash windows is often the only solution to these problems. There are other methods to improve the performance of sash windows than simply replacing them. This includes installing secondary glazing and draught-proofing.
It's important to consider the severity of the issue, since it might not be appropriate or even feasible to replace a complete window. For instance, a fogging glass issue typically occurs within the sash itself and is usually able to be resolved without having to tear out the entire frame. A weak seal can be fixed by making a few minor adjustments instead of a costly full-frame tear-out and replacement.
Sash windows are a complicated design that has many moving parts. This is why it can be tricky to fix common issues, like snapped sash cords or broken panes. Many homeowners do not want to disassemble the window frame in order to fix the issues. Many homeowners opt to work with a professional due to these reasons.
Specialists can restore sash window frames to their original glory or update them to meet modern energy standards. This could include reconditioning frames and installing secondary glass to stop heat from escaping through the window. It is also possible to add an edge strip for brush-piles to cut down on drafts and prevent the window from squealing.
To begin a repair windows start by removing the window stops (the moldings that are in front of the lower sash). Then, loosen the staff bead and take off the lower sash. Remove the chains and cords from both sides. Lastly remove the sashweights from the bottom weight cavity. Keep the hardware in a safe position. Soften any old filler, hardened putty, or filler with a heat gun and scrape it away with the help of a putty knife. Reassemble the window, reconnect the hardware and lubricate the pulley axles with silicone or Teflon spray. Reinstall the parting bead, and reinstall upper sash.
Repair
It is essential for the homeowner to decide whether to repair or replace their sash windows. Although modern replacements offer a host of benefits but the original features of a home that was built earlier provide personality and value to the property and are often cheaper to repair than replacing them. Maintaining them in good shape can help save on energy costs. Sash windows can be prone to rattles and drafts. This can lead to more expensive energy bills and can damage the frame and sash.
Sash windows can be difficult to open or close. The mechanism that slides can become dislodged or draughty. It's best to leave the repair of sash windows to professionals because it requires a lot of removal. With the right tools and experience it is possible to repair old windows with sash yourself. Adam shows Jess the basics:
Making the window come apart begins by removing any security fittings in front of the lower sash. Then, remove the staff bead. Then, take out the bottom sash. Remove the cords and chains from both sides, and knot them so that they cannot be pulled back by the weights. It's now time to remove the upper sash. Remove the sash stops (a thin vertical strip of wood that is used to hold the sash) and then loosen any painted-covered hardware. The sash should be pulled back to reveal the weight. It is a large iron or lead cylinder that is hidden in a cavity and is supported by cords. To stop the sash from falling into the void pierce it using a nail, and sacrifice the weight.
Once the sashes are free Clean the jamb and rails that meet, remove the glazing cords and door Repairing sash bars, and remove any paint off the sash stops using the help of a utility knife. Once the sashes are returned to their original positions, you can attach the stops using nails that are not too large to risk damaging the balancing weight.
Reassemble the sash by placing the upper sash on top of its track, then the lower sash. Check that the sash stops and the frame are aligned properly. If needed, reconnect any beads used for parting. Reattach the sash cords or chains and install the sash pulleys.