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Sash Windows Repair and Replacement

Older sash windows may be prone to a variety of problems including draughts, rattles, and inadequate insulation. A little bit of care can often restore them to a high standard of performance.

First, cut off the seal with a utility knife. Remove the staff bead, pull out the upper sash and take off any chains or cords. Keep the hardware in a bag that has the label.

Sealing

Sash windows can look stunning in old buildings, however they do need maintenance and could be susceptible to issues like cracks in putty, wet rot, and drafts. It is possible to reduce energy loss and increase the efficiency of sash windows by replacing the windows, repairing or sealing them.

Draughts are mostly caused by gaps between the sash and frame. They can also lead to noise reduction and rattle. Sealing beads, specialty products, and secondary glazing can all be used to minimize the air leakage within a sash.

A common problem is a gap between the top of the sash and the jamb frame, or between the bottom of the sill and the sash. This can lead to moisture leaking into the wood, which can cause rotting, and mold growth. The gap can be filled by caulking made of silicone or polyurethane or foam sealant.

If a gap is preventing the windows from opening and closing easily, it could be necessary to install new sash runners or spring bronze. These are a type of bronze that are stapled or nailed onto the edges of the lower sash to prevent sideways rattle, and they are available from DIY stores. Tubular vinyl weatherstripping can also be used, glaze however it is more likely to tear and can detract the appearance of your window.

When installing replacement runners for sash, it is important to measure the entire width of the window opening. It is best to take measurements from the top of sash up to the horizontal line on the rail that connects them and from the bottom of sash down to the sill. These measurements can be transferred to new runners which will ensure the best fit and function of the window.

In older buildings there is a greater gap between the sash and frame on the leading edge. It can be draught-proofed by using a self-adhesive Vstrip, however it is essential to account for this when measuring and cutting the material.

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

Refurbishment

The Sash window is a beautiful, historic feature of many homes. These windows are gorgeous but they can also be prone to problems. Rattling, draughts, sticking or leaking are typical issues. Rotting frames and rails that connect them, as along with broken glazing bars, defective weights or rotten frames can all cause problems. When these issues arise, it's time to consider repairs or glaze replacements to your sash.

Refurbishment may be more expensive than replacing the sash, but can bring back the appearance and function to the same level that it was in its original form. It involves lining the joining rail and sash box with traditional putty and repairing any rot damage. Re-painting the frame of the timber is also included, as well as 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 reduce the rattling.

If you require a new sash it can be constructed using similar designs to the frame that was previously used and keep the character of your house. This is particularly important for listed buildings where any modifications to windows need planning permission.

Before you put the new window on, it's best to examine its metal tabs with the tabs on the old sash (see below). If they are different shapes the new sash may not fit inside the window frame slots.

It is important to decide if you want to repair or replace windows that are damaged, as each choice will require a different level and amount of knowledge. If a significant portion of the glass in the sash is missing replacing it is a better alternative. But when the glass is damaged in a small area or a sill is decaying, a repair may be more appropriate.

Replacement

Although many homeowners want to keep their old windows in good condition, deterioration could eventually cause issues such as draughts, rattles, or even broken glass. These issues typically lead to a replacement as the only logical solution. There are other ways to improve the performance of sash windows rather than replacing them. These include installing secondary glazing and draughtproofing.

It's important to consider the severity of a issue, since it might not be appropriate or even feasible to replace a complete window. For example, a foggy glass issue usually occurs in the sash itself and Glaze can usually be solved without ripping out the whole frame. A leaky seal can often be corrected with a few simple fixes instead of a costly full frame tear-out and replacement.

Sash windows are quite complicated in their design and come with a lot of moving parts. This is why it can be difficult to remedy some common problems like sash cords that are snapped or broken panes. Solving these issues usually requires dismantling the window frame, which isn't something that most homeowners want to tackle themselves. Many homeowners choose to engage a professional for these reasons.

Specialists can restore sash window frames back to their original splendor or bring them up-to-date with the latest energy standards. This could include reconditioning frames and installing secondary glass to prevent heat from getting out of the window doctor. It is also possible to add a brush pile strip, to stop rattling and reduce drafts.

To start a repair project take out the window stops (the moldings in front of the lower sash). Next, loosen the staff bead and pull out the lower sash. Take off the cords or chains on both sides. Then remove the sashweights from the bottom cavity of the weight. Store the equipment in a secure location. The heat gun will soften the old, hardened filler or putty. Scrape it away with a blade made of putty. Reassemble the window. Reattach the hardware. Lubricate the pulleys with Teflon or silicone spray. Install the parting beads again and reinstall the upper sash.

Repair

It is crucial for the homeowner to make a choice on whether to replace or repair their sash windows. Modern replacements have many benefits, but the original features in an older house can add the character and value. They are also less expensive to repair rather than replace. Maintaining them in good shape can also save energy costs. Sash windows are susceptible to rattles, drafts, and condensation, and these problems can lead to increased costs for energy and damage to the frame and the sash.

Sash windows are notoriously difficult to close and open as the traditional sliding mechanism can become dislodged from its track or become draughty. Repairing a sash windows requires extensive removal of the upvc window repairs frame and should be left to a professional. With the right tools and knowledge it's possible to fix old sash windows yourself. Adam shows Jess how to get started:

Remove any security fittings behind the lower window sash. Then, you can remove the staff bead. Finally, pull out the sash at the bottom. Then, pull out the chains or cords on both sides and knot them to prevent them being pulled back into the frame by the weights that are attached. It's now time to remove the upper sash. Remove the sash stops which is a thin vertical strip of wood that is used to hold the sash. Also, take off any hardware that has been painted. The sash should be pulled back to reveal the weight. It is a massive iron or lead cylinder, which is tucked away in a cavity and is held by cords. To prevent the sash from falling into the void, hit it with an hammer and then sacrifice the weight.

After the sashes have been removed clean the jambs as well as rails that connect them. Remove the glazing bars as well as the sash cords. Then employing a utility blade take off any paint from the sash stop. After the sashes have been put back in place, you can reattach the stops using nails that are not too large to risk damaging the weight that is balancing.

Reassemble the sash by placing the upper sash on top of 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. Then, reconnect the sash chain or cords and then re-attach the axles for the sash pulleys.