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Sash Windows Repair and Replacement

Older sash windows may suffer from a range of problems including draughts, rattles, and poor insulation. With a little care they can be repaired to their original performance.

First, take off the seal with a utility knife. Then remove the staff bead, then remove the upper sash, taking off cords or chains and storing hardware in a bag marked.

Sealing

Sash windows look gorgeous in older buildings, but they do need maintenance and are susceptible to issues such as cracks in putty, wet rot and draughts. It is possible to minimize energy loss and increase the efficiency of windows with sash by replacing them or repairing them, or sealing them.

The gaps between sash frame are the primary cause of drafts. They can also trigger noise reduction and rattle. Different methods can be employed to limit air leaks within a sash window, including sealing beads, special products and secondary glazing.

A common problem is a gap that exists between the top of the sash and the jamb frame or the bottom of the sill and the sash. This can cause moisture leaking in the wood, rotting and the growth of mould. The gap can be sealed with silicone or polyurethane caulking or foam sealant.

If a gap is preventing windows from closing and opening without a hitch, it might be necessary to put in new spring bronze or sash runners. These are a type of bronze that are stapled or nailed onto the edges of the lower sash to prevent sideways rattle, 257634 and they are available from DIY stores. Tubular weatherstripping also can be used, but it tends to rip and may alter the look of your window.

When installing replacement runners for sash it is essential to measure the entire width of the window opening. It is best to take measurements from the top of the sash up to the horizontal line on the meeting rail and from the bottom sash down to the sill. These measurements can be transferred to new runners that will ensure a better fit and operation of the window.

In older buildings the gap between the sash and frame is usually wider around the leading edge. It can be draught-proofed by a self-adhesive Vstrip, however it is important to consider this when cutting and measuring the material.

The strip should be cut at the top of the sash and with an inch extra on each side to allow for movement. It should be cut squarely and placed to align with the angle of the sill. Use stainless steel screws as brass will rust. Also, make sure you use high-quality polyurethane or silicone glue.

Refurbishment

The sash is a beautiful, historical feature of many homes. These windows are gorgeous but they can also be susceptible to problems. Draughts, rattling, sticking or leaks are all common problems. Also, rotting frames, meeting rails, broken glass bars or weights that are not working properly can cause a lot of trouble. If you experience any of these problems it's time to replace or repair your sash.

Refurbishment can be more expensive than replacing the sash but can restore the appearance and function to the same standard that it was in its original form. Refurbishment involves lining both the meeting rail and the sash box with traditional putty, and then repairing any damage caused by decay. Re-painting of the timber frame 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). It is also recommended to put in brush pile weather strip to prevent rattling.

If the need for a new sash arises the frame can be constructed using similar designs to the frame of the previous one and preserve your property's heritage style. This is particularly crucial for listed buildings, where any modifications to windows require planning permission.

Compare the metal tabs on the new window to the old sash prior installing it (see below). If these are different shapes the new sash won't fit correctly into the window frame slots.

It is crucial to determine whether to replace or repair a damaged window, as each choice will require a different degree and cost of knowledge. If a large part of the glass in the sash is missing replacing it is a better option. However, if the glass is damaged in a tiny section or a sill has begun rotting then a repair will be more appropriate.

Replacement

Many homeowners wish to keep their old sash window in good condition, however it is inevitable that deterioration will cause problems like rattles or draughts. Broken glass can also occur. These issues usually lead to a replacement as the only feasible solution. However, there are other ways to improve the sash windows beyond just replacing them, including installing draughtproofing and secondary glazing.

Think about the scope of the issue. It may not be necessary or even suitable to replace windows. For instance, a fogging glass issue is usually a problem within the sash itself and is typically a solution without ripping out the whole frame. A leaky seal can be fixed by making a few minor adjustments instead of a costly full frame tear-out and replacement.

Sash windows are quite complex in design and have many moving parts. This is why it can be difficult to fix common issues such as snapped sash cords or broken panes. Most homeowners don't want to take apart the window frame to repair these issues. Many homeowners choose to engage a professional for these reasons.

A specialist can assist in restoring sash windows back to their original glory or even bring them up to current energy standards. This may include reconditioning the frames and installing secondary glass to block heat from escaping through the window. It may also be beneficial to add a brush pile strip to stop rattling and reduce drafts.

To start a repair project, remove the window stops (the moldings on the front of the lower sash). Then, loosen the staff bead, then take off the lower sash. Take off the chains or cords that are on both sides. Finally take the sashweights out of the bottom weight cavity. Keep the hardware in a secure location. Soften any old filler or hardened putty by using a hot gun. Then scrape it off with a knife for putty. Reassemble the window. Reattach the hardware. Lubricate the pulleys using Teflon or silicone spray. Reinstall the parting bead, 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. Modern replacements are beneficial in many ways, but the original features of an older house can add authenticity and value. They are also cheaper to repair rather than replace. Inspecting them regularly can help reduce energy costs. Sash windows are susceptible to rattles and drafts. This can result in higher energy bills and even damage to the frame and the sash.

Sash windows can be difficult to open or close. The sliding mechanism may be slack or 257634 draughty. It is best to leave the repair of a sash windows to professionals since they require extensive dismantling. But, with the right tools and know-how it is possible to repair old sash windows yourself. Adam shows Jess the basics:

Getting the window to come apart starts with the removal of any security fittings on the front of the lower sash. Then, remove the staff bead. Then, remove the sash at the bottom. Take the chains and cords from both sides, and knot them in such a way that they won't be pulled back by the attached weights. It's now time to remove the upper sash. The sash stops must be removed which is a thin vertical strip of wood that is used to hold the sash. Also, take off any hardware that has been painted. Unscrew the sash to reveal the weight balancing, which is a heavy iron cylinder that is encased in a hidden cavity and secured by rope. To prevent the sash falling into the void, pierce it using a nail, and then sacrifice the weight.

After the sashes are removed, clean the jambs and the rails that meet. Remove the glazing bars and cords of the sash. Then, using a utility blade take off any paint from the sash stop. After the sashes have been put returned to their original positions, you can attach the stops using nails that are small enough to avoid puncturing the balancing weight.

Reassemble the sash by inserting the upper sash first into its track, then the lower sash. Make sure that the sash stops are in the correct alignment with the frame, and then reattach the parting beads if needed. Finally, reattach the sash chains or cords and re-install the axles of the sash pulleys.