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Sash Windows Repair and Replacement

Older sash windows may be plagued by a variety of issues, including draughts rattles, and inadequate insulation. With a little effort they can be repaired to a higher level of performance.

First, cut off the seal with a utility knife. Remove the staff bead, pull out the upper sash and take out any chains or cords. The hardware should be stored in a container with a label.

Sealing

Sash windows look stunning in older structures, but they require regular maintenance. They are susceptible to problems like wet-rot cracked putty and draughts. It is possible to decrease energy loss and improve the efficiency of windows with sash by replacing them or repairing them, or sealing them.

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

A common issue is a gap that exists between the top of the sash and the jamb frame, or the bottom of the sash and the sill. This can lead to moisture leaking in, rotting wood, and mold growth. Seal the gaps with silicone, polyurethane, or foam sealant.

Installing a new sash runner or spring bronze might be necessary if a gap prevents the windows from closing and opening smoothly. These are a type of bronze that are stapled or nailed into the edges of the lower sash in order to prevent sideways rattle. They can be purchased at DIY stores. Weatherstripping made of tubular vinyl can also be used, but it is prone to tear and may alter the look of your window.

When installing replacement sash runners, it is important to measure the window opening. It is recommended to measure from the top of the 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 be transferred to the new runners, which will help ensure a good fit and better operation of the window repairs.

In older structures 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 Vstrip, however it is important to account for this when measuring and cutting the material.

The strip should be cut at the height of the sash, with an inch more on each side to allow for movement. It should be cut square and placed in a way that the ends are matched to the angle of the window sill. It is also essential to use stainless steel screws as brass can rust, and the best quality polyurethane or silicone adhesive.

Refurbishment

The sash is a beautiful historic feature in many homes. However, despite their beauty these windows are prone to a range of issues. Common problems include rattling, stuck or draughty windows. The rotted frames and the meeting rails as along with broken glazing bars, defective frames, or rotten weights are all causes of problems. If you encounter any of these issues it's time to replace or repair your sash.

Refurbishment may be more expensive than replacing the sash but can bring back the appearance and functionality to the same level as its original state. Refurbishment involves the lining of the meeting rail as well as the sash box using traditional putty and fixing any damage caused by decay. It also involves 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's also recommended to install brush pile weather strip to prevent the rattling.

If the need for a new sash arises it can be constructed using similar designs to the frame of the previous one and preserve the style of your home's historic design. This is especially important for listed buildings where any modifications made to windows will require planning permission.

Before putting the new window in before installing it, make sure you examine its metal tabs with those on the old sash (see below). If the tabs are different shapes, the new sash will not fit properly into the slots of the window frame.

When a window is damaged it is essential to decide between repair or replacement because each kind of work will require a different degree of expertise and expense. If a large portion of the glass in the sash is missing then replacing it will be an option. If the glass is only damaged in a small region or a sill has begun to decay, then a repair would be better.

Replacement

Although many homeowners want to keep their old sash windows in good working condition, the deterioration of the windows can result in problems like rattles, draughts, or even broken glass. These issues often point to an inevitable replacement as the only feasible solution. There are other ways to improve the performance of sash windows than simply replacing them. They can be improved by installing secondary glazing and draughtproofing.

It is important to determine the extent of a issue, as it may not be feasible to replace a complete window repair. A foggy glass problem, for example, is usually caused by the sash and can be resolved without tearing 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 are a complicated design 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 taking apart the window frame, which isn't something most homeowners would want to tackle themselves. Many homeowners decide to hire a specialist for these reasons.

A professional can help restore sash windows to their original splendor, or even bring them up to current energy standards. This could include reconditioning frames and fitting secondary glass to block heat from getting out of the window. It is also possible to add a brush-pile strip to reduce drafts and stop the window from squealing.

To begin a repair start by removing the window stops (the moldings in front of the lower sash). Then, loosen the staff and remove the lower window sash. Take the chains and cords from both sides. Lastly take the sashweights out of the bottom cavity of the weight. Store the hardware in a safe place. Soften any old filler, hardened putty, or filler by using a hot gun. Then scrape it away using a knife for putty. Reassemble the window, reconnect the hardware and then lubricate the pulley axles with silicone or Teflon spray. Install the parting beads and install the upper sash.

Repair

It is important for the homeowner to decide whether to repair or replace their sash windows. Modern replacements offer many advantages, but the original features of an older home can provide character and value. They are also cheaper to repair rather than replace. Maintaining them in good condition will also help you save money on energy. Sash windows can be prone to drafts and rattles. This can result in higher energy bills and damage the frame and the sash.

Sash windows can be a challenge to open or close. The mechanism for installed sliding could become sloppy or become draughty. It is recommended to leave the repair of a sash windows to professionals, as they require extensive dismantling. With the right tools and skills it is possible for you to repair the old sash window yourself. Adam shows Jess the basics:

Remove any security fittings that are just in front of the lower window sash. Then, remove the staff bead and pull out the bottom sash. Remove the chains and cords from both sides, and tie them so that they cannot be pulled back by the attached weights. It's time to remove the upper sash. Unscrew the sash stops (a thin vertical strip of wood that holds the sash) and loosen any paint-encrusted hardware. Unscrew the sash to reveal the balancing weight that is a massive iron cylinder that is encased in a concealed cavity and held by a rope. To keep the sash from falling into the void, make a hole in it using nails and remove the weight.

After the sashes have been removed, clean out the jamb and meet rails, remove the glazing bars and sash cords and strip any paint from the sash stops using an utility knife. Reattach the stops after the sashes have been reinstalled. Use nails that are not large enough to puncture the balancing weight.

To reassemble the sash place the top sash on its track first, then the lower sash. Check that the sash stops and the frame are aligned properly. If needed, reconnect any parting beads. Then, reconnect the sash cords or chains and re-attach the axles of the sash pulleys.