Sash Windows Repair and Replacement
Sash windows older than 20 years can have various issues such as rattles and draughts. They may also be poorly constructed to be insulated. With a little effort they can be repaired to a high 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 take out any chains or cords. The hardware should be stored in a container with the label.
Sealing
Sash windows are beautiful in older buildings, but they require regular maintenance and can be subject to issues like cracks in putty, wet rot and draughts. It is possible to decrease energy loss and increase the efficiency of windows with sash by replacing them or repairing them, or sealing them.
Draughts are mostly caused by gaps between the sash and the frame. They can also cause noise reduction and rattling. Various methods can be used to reduce air leaks in windows with sash, including sealing beads, specialist products and secondary glazing.
A gap between the top and bottom of the sash and the jamb frame is a common problem. This can result in moisture leaking in and rotting of the wood, and mould growth. Seal the gap with silicone, polyurethane or foam sealant.
Installing a new sash runner or spring bronze could be required if a gap prevents windows from opening and shutting smoothly. These are strips of bronze that are stapled or nailed into the edges of the lower sash in order to prevent sideways rattle. They are available from DIY stores. Tubular vinyl weatherstripping can also be used, but it tends to rip and can detract the appearance of your window.
When installing replacement sash runners, it is important to measure the entire width of the window opening. It is best to measure from the top of the sash to the horizontal line of the meeting rail, and from the bottom of the sash to the sill. These measurements can be transferred to new runners, which will ensure an improved fit and performance of the window.
In older structures there is a larger gap between the sash and frame at the leading edge. It can be draught-proofed with a strip of self-adhesive V-strip, but it is important to account for this when measuring and cutting the material.
A strip must be cut to the length of the sash, and with an extra inch to allow for movement. It should be trimmed to a square shape and then positioned so that the ends are matched to the angle of the window sill. Use stainless steel screws since brass can be rusty. Also, make sure you use the highest quality silicone or polyurethane glue.
Refurbishment
The sash is a beautiful historical feature of a lot of homes. However, despite their beauty these windows are prone to a variety of problems. Rattling, draughts, sticking or leaks are all common problems. The rotting of frames and connecting rails, broken glazing bars or weights that are not working properly can add to the inconvenience. When these issues arise, it's time for a sash repair or replacement.
Refurbishment can be a more costly option than simply replacing the sash itself, but it will bring back the appearance and function of your sash window to the same or superior to its original state. Refurbishment involves re-lining both the meeting rail and the sash box with traditional putty, and then repairing any damage caused by rot. Re-painting of the timber frame is also included, as well as re-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). It is also recommended to put in brush pile weather strip to reduce rattling.
If a replacement sash needed, it can be made using the same style 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 modifications to windows need planning permission.
Check the metal tabs of the new window to the old sash prior to installing it (see below). If they're different shapes, the new sash won't fit in the window frame slots.
If a window has been damaged, it's essential to choose between repair or replacement, since each kind of repair will involve a different level of expertise and price. If a large part of the glass in a sash is missing, replacing it is an option. If the glass is damaged in a tiny area or a sill is rotting or rotting, then a repair could be better.
Replacement
While a lot of homeowners are eager to keep their old sash windows in good working condition, deterioration could eventually cause problems such as rattles, draughts, or even broken glass. These issues often suggest replacement as the only logical solution. There are other ways to improve sash window performance rather than replacing them. This includes installing secondary glazing and draught-proofing.
It is important to determine the extent of a issue, as it may not be feasible to replace a complete window. For instance, a fogging glass issue typically occurs within the sash and is usually able to be resolved without ripping out the whole frame. A poor seal can also often be remedied with a few simple fixes instead of a costly full-frame tear-out and replacement.
Sash windows have a complex design with a lot of moving parts. This is why it can be a challenge to remedy some common problems such as snapped sash cords or broken panes. Most homeowners don't want to disassemble the window frame to fix the issues. Many homeowners choose to work with a professional due to these reasons.
A specialist can assist in restoring windows made of sash back to their original glory, or even bring them up to the latest energy standards. This may include reconditioning frames and installing secondary glazing to stop heat escaping out of the window. You can also install a brush-pile strip to reduce drafts and stop the window from shaking.
To start a repair project take out the window stops (the moldings that are in front of the lower sash). Next, loosen the staff bead, then take off the lower sash. Take the chains and cords from both sides. Finally, disconnect the sash weights from bottom of the cavity and take them off. Store the equipment in a secure place. Use a heat gun to soften old, hardened filler or putty. Scrape it away with a blade made of putty. Reassemble the window, reattach the hardware and then lubricate the pulley axles by using silicone or Teflon spray. Install repair my windows and doors parting beads and install the upper sash.
Repair
It is essential for the homeowner to make a choice on whether to replace or repair their sash windows. Although modern replacements can provide numerous benefits, the original features of an older house provide character and value to the property and are often cheaper to repair than replacing them. Keeping them in good condition can also save 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 a challenge to open and close. The mechanism for sliding could become sloppy or even draughty. Repairing a sash windows requires extensive dismantling of the window frame and is best left to the professionals. However, with the right tools and knowledge it's possible to fix old sash windows yourself. Adam shows Jess the basics:
The process of bringing the window apart starts with the removal of any security fittings that are in front of the lower sash. Then, remove the staff bead. Then, remove the sash at the bottom. Remove the cords and chains from both sides, and tie them in a way that they can't be pulled back by the weights attached. Now it's time to take out the upper sash. Unscrew the sash stoppers (a thin vertical strip of wood that supports the sash) and then loosen any painted-covered hardware. The sash can be pulled back to reveal the balancing weight, which is a large lead or iron cylinder enclosed in a concealed cavity and held 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 out the jamb and meet rails. remove the glazing bars and sash cords, and strip any paint off the sash stops with the help of a utility knife. After the sashes have been put back in place, reattach the stops using nails that are small enough to prevent cutting the weight that is balancing.
Reassemble the sash by putting the upper sash first on its track, then the lower sash. Make sure the sash stoppers are aligned properly with the frame, and then reconnect the beads that separate if required. Reattach the sash chains or cords and attach the sash pulleys.