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Sash Windows Repair and Replacement

Sash windows older than 20 years old can be afflicted with many issues, including draughts and rattles. They could also be poorly insulation. With a little effort they can be restored to a higher level of performance.

First, take off the paint seal using an utility knife. Then remove the staff bead, then pull out the upper sash, taking off chains or cords, and then storing the hardware in a labeled bag.

Sealing

Sash windows look stunning in older structures, but they require care. They can be affected by issues like wet-rot, cracked putty and draughts. It is possible to minimize energy loss and improve the efficiency of windows with sash by replacing them or repairing double glazed windows them, or sealing them.

The gaps between sash and frame are the main source of drafts. They can also cause noise reduction and rattling. Different methods can be employed to reduce air leaks in windows with sash, Sash Windows Repair including sealing beads, specialist products and secondary glazing.

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

If a gap in the window is preventing the windows from closing and opening smoothly, it may be necessary to install new spring bronze or sash runners. These strips of bronze are attached by staples or nails to the lower sash edges to prevent sideways rattling. They can be bought at DIY stores. Weatherstripping made of tubular vinyl can also be used, but it tends to rip and can detract the appearance of your window.

When replacing sash runners it is essential to measure the window opening. It is best to take measurements from the top of sash up to the horizontal centerline of 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 structures there is a greater gap between the sash and the frame on the leading edge. It can be draught-proofed using a strip of V-strip that is self-adhesive. However it is essential to take this into account when measuring and cutting the material.

A piece of material should be cut to the length of the sash, and with an additional inch each side to allow to allow movement. It should be squarely trimmed and placed to align with the angle of the sill. Make sure to use stainless steel screws since brass may be rusty. Also, use the highest quality silicone or polyurethane glue.

Refurbishment

The sash is an attractive, historical feature of many homes. They are beautiful, but they can be prone to problems. Draughts, rattling or leaking are common issues. Frames that are rotting and rails that meet, as along with broken glazing bars, damaged weights or rotten frames can cause issues. When these problems occur it's time to consider repairs or replacements to your sash.

Refurbishment can be a more costly option than simply replacing the sash itself, but it will improve the appearance and functionality of your sash window to the same or superior to its original state. Refurbishment involves the lining of the meeting rail as well as the sash box with traditional putty and fixing any damage caused by decay. It also includes re-painting the timber frame 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). It is also recommended to fit brush pile weather strips in order to minimize rattling and improve insulation.

If you require a new sash, it can be made using similar designs to the old frame and maintain your property's heritage style. This is especially important for buildings that are listed, as 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 may not fit into the window frame slots.

It is important to decide if you want to repair or replace windows that are damaged, as each option will require a different degree and cost of expertise. For example, if a sash window has a significant piece of glass missing, replacement is the best choice. If the glass is damaged in a small area or a sill is beginning to rot or rotting, then a repair could be more appropriate.

Replacement

Many homeowners wish to keep their old sash windows in good condition, but the deterioration of the window will eventually cause issues like rattles or draughts. Broken glass can also occur. This is why replacing sash windows is often the only solution to these issues. However, there are ways to improve sash windows that go beyond replacing them, such as installing draught proofing as well as secondary glazing.

It is important to determine the severity of a issue, as it may not be feasible to replace a complete window. For example, a foggy glass issue typically occurs in the sash itself and is usually able to be resolved without ripping out the whole frame. It is typically possible to fix a poor seal with a few simple solutions, rather than cutting out the entire frame and reinstalling it.

Sash windows are a complicated design with many moving parts. This is why it can be a challenge to fix common issues such as snapped sash cords or broken panes. Resolving these issues often requires removal of the window frame which isn't a job most homeowners want to tackle on their own. For these reasons, many opt to hire a professional.

Specialists can restore sash window frames back to their original glory or update them to meet the latest energy standards. This could include reconditioning 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 begin a repair, remove the window stops. (The moldings are located in front of the lower glass). Next, remove the staff bead and take off the lower sash. Remove the cords and chains from both sides. Finally, remove the sash weights from the bottom of the cavity and take them off. Place the hardware in a safe place. Soften any old filler, hardened putty, or filler using a heat gun, and scrape it away using a putty knife. Reassemble the window. Reattach the hardware. Lubricate the pulleys with Teflon or silicone spray. Reinstall the parting beads and then reinstall 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 offer many advantages however, the original features of an older home can provide character and value. They are also less expensive to repair than replacing. Inspecting them regularly can also reduce the cost of energy. Sash windows are vulnerable to drafts, rattles, and condensation. These issues can lead to higher cost of energy and damage to the frame and the sash.

Sash windows are notoriously difficult to close and open and the standard sliding mechanism can become dislodged from its track, or even draughty. It's best to leave the repair of a window with sash to a specialist since they require extensive removal. With the right tools and knowledge, it is possible to repair old windows using sash. Adam shows Jess how to start:

Getting the window to come apart begins with the removal of any security fittings in front of the lower sash. Then, you can remove the staff bead. Finally, pull out 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 weights. 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, remove any paint-encrusted hardware. The sash should be pulled back to reveal the weight. It is a large iron or lead cylinder, which is tucked away inside a cavity and supported by an elastic cord. To stop the sash falling into the void, make a hole in it using an hammer and then sacrifice the weight.

After the sashes have been removed clean the jambs and rails that connect them. Remove the glazing bars and sash cords. Then employing a utility blade take off any paint that is on the sash stop. Once the sashes are returned to their original positions, you can attach the stops using nails that are small enough to avoid damaging the weight that is balancing.