Sash Windows Repair and Replacement

Older sash windows may be prone to a variety of issues, including draughts rattles, and inadequate insulation. A little care can often bring them back to their original performance.

First, knock off the seal of paint from the window stop using an utility knife. Then, remove the staff bead and remove the upper sash by removing chains or cords, and then storing the hardware in a labeled bag.

Sealing

Sash windows look gorgeous in old buildings but they require maintenance and could be susceptible to issues like cracks in putty, wet rot, and drafts. Repair, sealing, or replacement of the sash window is an effective way to reduce these problems and improve energy efficiency.

The gaps between sash frame are the main source of drafts. They can also lead to noise and rattling, which can reduce soundproofing. Sealing beads, specialist products, and secondary glazing can be used to limit the air leakage within the Sash.

A gap between the top and bottom of the sash, and the jamb frame, is an issue that is common. This could cause moisture to leak into the wood, rotting it, and mold growth. Seal the gap 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 bronze strips are tied or stapled to the lower sash edges in order to stop sideways rattling. They are available at DIY stores. Tubular weather-stripping made of vinyl is a different option but it can tear, and can detract from the appearance of a window.

When replacing sash runners it is essential to measure the window opening. It is best to measure from the top of sash up to the horizontal centerline on the rail that connects them and from the bottom of sash down to the sill. These measurements can later be transferred to new runners which will ensure an improved fit and performance of the window.

In older buildings there is a larger gap between the sash and the frame at the leading edge. It can be draught-proofed by using a 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 height of the sash, and with an extra inch each side to allow to allow for movement. It should be trimmed square and placed in a way that the ends are aligned to the angle of the window sill. It is also crucial to use stainless steel screws because brass is prone to rust, and the best quality polyurethane or silicone adhesive.

Refurbishment

The Sash window is a beautiful historical feature in many homes. However, despite their beauty windows like sash windows can be prone to a range of issues. Draughts, rattling, sticking or leaking are typical issues. Also, rotting frames, meeting rails, broken glazing bars, or damaged weights could create a mess. When these issues arise, it's time to consider an sash repair or replacement.

Refurbishment is more costly than replacing the sash but it will bring back the appearance and function to the same standard in its original condition. It involves lining the joining rail and sash box using traditional putty, and then repairing any rot damage. Re-painting the frame of the timber 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). In addition, it is recommended to install brush pile weather strips to lessen the rattling and increase insulation.

If a replacement sash required, it can be made using the same design to match the frame you have. This will maintain the traditional style of your house. This is especially important for buildings that are listed, as any modifications to windows need planning permission.

Compare the metal tabs of the new window with the old sash before installing it (see below). If they are different shapes, 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, since each kind of repair will require a different degree of expertise and price. If a significant portion of the glass in a sash is missing, replacing it is the better option. If the glass is only damaged in a small area or a sill is rotting, then a repair would be more appropriate.

Replacement

While many homeowners are keen to keep their old windows in good condition, deterioration could eventually cause issues such as draughts, rattles, or even broken glass. These issues usually point to an inevitable replacement as the only logical solution. There are other ways to improve sash window performance than simply replacing them. They can be improved by installing secondary glazing and draught-proofing.

Think about the scope of the issue. It may not be necessary or appropriate to replace the window. A glass that is foggy for instance, is usually caused by the sash, and can be resolved without tearing out the entire frame. A weak seal can often be remedied by making a few minor adjustments rather than an expensive full-frame tear-out and replacement.

Sash windows have a complex design that has many moving parts. This is why it can be a challenge to remedy some common problems, like snapped sash cords or broken panes. The solution to these issues typically involves taking apart the window frame, which isn't something the majority of homeowners would like to tackle themselves. This is why many opt to hire a professional.

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 could include reconditioning frames and fitting secondary glass to prevent heat from escaping through the window. You can also add a brush-pile strip in order to minimize drafts and stop the window from shaking.

To begin the Repair My Windows And Doors, take off the window stops. (The moldings are in front of the lower glass). Next, remove the staff bead and pull out the lower sash. Remove the chains or cords that are on both sides. Finally, remove the sash weights from the bottom of the weight cavity and remove them. Place the hardware in a safe place. Soften any old filler or hardened putty using a heat gun, and scrape it off with a knife for putty. Reassemble the window, reattach the hardware and lubricate pulley axles with silicone or Teflon spray. Install the parting beads again and reinstall the upper part of the sash.

Repair

It is crucial for homeowners to make a decision on whether to replace or repair their sash windows. While modern replacements provide a host of benefits but the original features of an older house give character and value to the property and are generally less expensive to fix than replacing them. Maintaining them in good shape will also help you save money on energy. Sash windows are susceptible to drafts, rattles, and condensation, Repair My Windows And Doors and these issues can lead to higher costs for energy and damage to the frame and sash.

Sash windows are notoriously difficult to close and open and the standard sliding mechanism may become displaced from its track or draughty. It is recommended to leave the repair of a window sash to a professional, as it requires a lot of dismantling. With the right tools and skills it is possible to repair an old sash window yourself. Adam shows Jess how to start:

Remove any security fittings that are behind the lower window sash. Then, remove the staff bead and take the sash off the bottom. Remove the chains and cords from both sides, and knot them so that they cannot be pulled back by the attached weights. The next step is to take out the upper sash. Unscrew the sash stoppers (a thin vertical strip of wood that holds the sash) and loosen any paint-encrusted hardware. Unscrew the sash to reveal the balancing weight, which is a large lead or iron cylinder enclosed in a concealed cavity and anchored by a rope. To stop the sash from falling into the void pierce it using a nail, and then let the weight go.

After the sashes have been removed Clean the jamb and meet rails, remove the glazing cords and sash bars, and remove any paint off the sash stops using the help of a utility knife. Reattach the stops when the sashes are reinstalled. Use nails that are not large enough to puncture the balancing weight.

To reassemble the sash place the top sash onto its track first, then the lower sash. Make sure that the sash stops are in the correct alignment with the frame, and then reconnect the beads that separate if required. Then, reconnect the sash chain or cords and then re-attach the sash pulley axles.