Sash Windows Repair and Replacement

Older sash windows can suffer from a range of problems including draughts, rattles and poor insulation. With a little attention, they can be restored to a high level of performance.

First, remove the seal on the paint of the window stop with the knife of a utility. Then, take off the staff bead, then pull out the upper sash and remove the cords or chains and storing hardware in a labeled bag.

Sealing

Sash windows are gorgeous in older buildings, however they require maintenance. They are susceptible to issues like wet-rot, cracked putty, and draughts. It is possible to minimize energy loss and increase the efficiency of windows made of sash by replacing the windows, repairing or sealing them.

Draughts are mainly caused by gaps between the sash and the frame. They can also trigger noise reduction and rattling. There are a variety of methods to limit air leaks within a sash window, including sealing beads, specialist products, and secondary glazing.

A common problem 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 the leaking of moisture, rotting of the wood, and mould growth. Seal the gap with silicone, polyurethane or foam sealant.

If a gap in the window is preventing windows from opening and closing without a hitch, it might be necessary to put in new spring bronze or sash runners. These bronze strips are tied or stapled to the sash's lower edges to prevent the rattling of the sides. They can be purchased at DIY stores. Tubular weather-stripping made of vinyl is a different option however it can tear and affect the appearance of a window.

It is important to take measurements of the entire window opening prior to installing the replacement sash runner. 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 then be transferred to new runners that will ensure the best fit and function of the window.

In older structures the gap between the frame and sash is typically wider around the leading edge. It is possible to draught-proof it using a strip of V-strip which is self-adhesive. However, it is important to take this into consideration when measuring and cutting material.

A strip must be cut to the height of the sash. There should be an extra inch on each side to allow movement. The strip should be cut square and positioned in a way that the ends are aligned to the angle of the window sill. It is also essential to use stainless steel screws, since brass can rust and a high-quality silicone or polyurethane adhesive.

Refurbishment

The sash is an attractive, historical feature of many homes. Yet despite their beauty, these windows are prone to a range of issues. Draughts, rattling or leaking are typical issues. Frames that are rotting and rails that meet, as along with broken glazing bars, damaged weights or rotten frames can cause issues. If you encounter any of these issues it's time to replace or repair your sash.

Refurbishment is more expensive option than simply replacing the sash itself but it will bring back the appearance and function of your sash window as good, if not better than its original state. It involves lining the meeting rail and sash box using traditional putty, and then repairing any rot-related damage. It also involves painting the frame of timber and re-glazing 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). In addition, it is recommended to install brush pile weather strips to lessen rattling and improve insulation.

If a replacement sash needed, it can be made using the same style to match your existing frame. This will help preserve the style and character of your property. This is particularly crucial for listed buildings, where any modifications to windows need planning permission.

Compare the metal tabs on the new window to the old sash prior installing it (see below). If they're different sizes, the new sash will not fit inside the slots of the window frame.

When a window is damaged it's essential to choose between replacement or repair, because each type of work will involve a different level of expertise and cost. 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 small region or a sill is rotting, then a repair would be better.

Replacement

Although many homeowners want to keep their old windows in good condition, deterioration could eventually cause problems such as draughts, rattles, or even broken glass. This is why it's often the only solution to these problems. There are other methods to improve sash window performance rather than replacing them. These include the installation of secondary glazing and draught-proofing.

Consider the extent of the issue. It may not be necessary or even appropriate to replace the double glazed window repairs. For instance, a foggy glass issue usually occurs within the sash and is typically a solution without having to tear out the entire frame. A poor seal can also be fixed by a few easy fixes rather than an expensive full-frame tear-out and replacement.

Sash windows feature a complicated design that has many moving parts. This is why it can be a challenge to solve common issues, like snapped sash cords or broken panes. Many homeowners do not want to take apart the window frame to fix the issues. Because of this, many opt to hire an expert.

A specialist can help restore windows made of sash to their original splendor, or even bring them up to the latest 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 a brush-pile strip to reduce drafts and stop the window from rattling.

To begin a repair, Sash remove the window stops (the moldings in front of the lower sash). Next, remove the staff bead and remove the lower sash. Take the chains and cords from both sides. Lastly, remove the sashweights from the bottom of the cavity for weight. Place the hardware in a secure place. Heat gun to soften the old, hardened filler or putty. Scrape it off with the blade of a putty. Reassemble the window, attach the hardware and then lubricate the pulley axles with silicone or Teflon spray. Install the parting beads and reinstall upper sash.

Repair

The decision to repair or replace a sash window is a crucial one for the homeowner. Modern replacements offer many advantages, but the original features in an older home can add authenticity and value. They are also less expensive to repair than replacing. Maintaining them in good shape can also save energy costs. Sash windows are vulnerable to drafts, rattles, and condensation. These problems can lead to increased energy bills and damage to the frame and the sash.

Sash windows can be a challenge to open and close. The sliding mechanism may become dislodged or become draughty. It is best to leave the repair of sash windows to professionals because it requires extensive removal. However, with the right tools and knowledge it is possible to repair old windows with sash yourself. Adam shows Jess how to get started:

Remove any security fittings that are behind the lower window sash. Next, remove the staff bead, then remove the bottom sash. Remove the cords and chains from both sides, and tie them in a way that they can't be pulled back by the weights. Now it's time to remove the upper sash. Remove the sash stops, a thin vertical strip of wood that is used to hold the sash. Also, take off any painted-covered hardware. The sash can be pulled back to reveal the weight balancing, which is a heavy iron cylinder that is encased in a hidden cavity and secured by a rope. To stop the sash from falling into the void, you must pierce it using a nail, and then sacrifice the weight.

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 when the sashes are reinstalled. Use nails that are not large enough to damage the balancing weight.

To reassemble the sash, place the top sash on its track first, then the lower sash. Make sure that the sash stops and the frame are properly aligned. If necessary, reattach any beads used for parting. Reattach the sash cords or chains and then install the sash pulleys.