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Sash Windows Repair and Replacement

Sash windows that are older than 20 years can have many issues, including draughts and rattles. They may also be inefficiently insulation. With a little attention they can be repaired to their original 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. Store the hardware in a container with a label.

Sealing

Sash windows are beautiful in older buildings, however they require maintenance. They can be affected by issues like wet-rot, cracked putty, and draughts. Repair, sealing or replacement of the sash window is an effective way to reduce these problems and improve energy efficiency.

Draughts are usually caused by gaps between the sash and frame. They can also cause rattling and reduced sound-proofing. Sealing beads, special products, and secondary glazing can all be used to minimize the air leakage inside the 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 in, rotting wood and the growth of mold. The gap can be closed with caulking made of polyurethane or silicone or foam sealant.

Installing a new sash runner, or spring bronze might be necessary in the event that a gap blocks windows from closing and opening easily. These bronze strips are attached by staples or nails to the sash's lower edges to stop the rattling of the sides. They are available at DIY stores. Tubular vinyl weather-stripping is another option but it has a tendency to tear and Window Doctor affect the appearance of a window.

It is essential to take measurements of the entire window opening prior to installing a an alternative sash runner. It is recommended to take measurements from the top of the sash to the horizontal line of the rail that connects it and from the bottom of the sash down to the sill. These measurements can be transferred to new runners which will ensure an improved fit and performance of the window.

In older buildings the gap between frame and sash is typically wider around the leading edge. It is possible to draught proof by using a self-adhesive Vstrip, however it is essential to take this into consideration when cutting and measuring the material.

The strip should be cut to the height of the sash and with an inch added on each side to allow 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 important to make use of stainless steel screws since brass can rust and the best quality silicone or polyurethane adhesive.

Refurbishment

The Sash window is a beautiful and historic feature of many homes. These windows are beautiful but they can also be susceptible to problems. Rattling, draughts, sticking or leaking are common issues. And rotting frames and meeting rails, broken glazing bars or faulty weights can cause a lot of trouble. When these issues arise, it's time for a sash repair or replacement.

Refurbishment can be a more costly option than simply replacing the sash itself, however, it can bring back the appearance and function 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 using traditional putty, and then repairing any damage caused by decay. Re-painting of the timber frame 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 fit brush pile weather strips to reduce rattle and increase insulation.

If a new sash is required, it can be made from similar designs to the frame of the previous one and preserve the style of your home's historic design. This is especially crucial for listed buildings, where any changes to the windows require planning permission.

Before putting the new window on before installing it, make sure you examine its metal tabs with those on the old sash (see below). If they're different sizes the new sash may not fit into the slots of the window frame.

If a window is damaged, it's essential to choose between repair or replacement because each kind of work will require a different level of expertise and expense. If a significant portion of the glass in the sash is missing replacing it would be the better option. However when the glass is damaged in a tiny section or a sill has been rotting then a repair will be the better option.

Replacement

While many homeowners are keen to keep their old sash windows in good working condition, the deterioration of the windows can result in problems like draughts, rattles, or even broken glass. This is why it's often the only solution to these issues. There are other methods to improve the performance of sash windows than simply replacing them. They can be improved by installing secondary double glazing and draught-proofing.

Think about the scope of the issue. It may not be necessary or even suitable to replace the window. For instance, a fogging glass issue is usually a problem within the sash itself and is typically a solution without having to tear out the entire frame. It is often possible to repair a weak seal by making a few easy solutions, rather than cutting out the entire frame and replacing it.

Sash windows feature a complicated design with a lot of moving parts. This is why it can be a challenge to fix common issues such as snapped sash cords or broken panes. Most homeowners don't want to disassemble the window frame to fix these problems. Many homeowners decide to hire a specialist for these reasons.

A specialist can assist in restoring windows made of sash to their original splendor or even bring them up to modern energy standards. This could include reconditioning the frames and fitting secondary glazing, which will stop heat loss out of the window doctor (discover this). You can also add a brush-pile strip in order to minimize drafts and prevent the window from shaking.

To begin a repair take out the window stops (the moldings in front of the lower sash). Next, remove the staff bead, then pull out the lower sash. Take the chains and cords from both sides. Finally, remove the sash weights from the bottom of the cavity and take them off. Keep the hardware in a safe location. Use a heat gun to soften 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 and reinstall the upper part of the sash.

Repair

The choice to replace or repair windows with sash is a major one for the homeowner. While modern replacements provide many advantages but the original features of an older house give character and value to the home and are usually cheaper to fix than replacing them. Inspecting them regularly can also lower energy costs. Sash windows are vulnerable to rattles, drafts, and condensation, and these problems can result in increased costs for energy and damage to the frame and sash.

Sash windows can be difficult to open and close. The mechanism that slides can be slack or draughty. Repairing a sash windows requires extensive removal of the frame of the window and is best left to a professional. However, with the right tools and knowledge it's possible to repair old windows with sash yourself. Adam shows Jess how to begin:

Remove any security fittings that are in front of the lower window sash. Then, take off the staff bead. Finally, pull out the bottom sash. Remove the cords and chains from both sides, and tie them in a way that they can't be pulled back by the weights attached. The next step is to remove the upper sash. The sash stops must be removed which is a thin vertical strip of wood that holds the sash. Also, take off any paint-encrusted hardware. Pull the sash to reveal the weight balancing, which is a large lead or iron cylinder enclosed in a concealed cavity and anchored by rope. To stop the sash falling into the void, hit it with an hammer and then sacrifice the weight.

Once the sashes are free Clean the jamb and meet rails. remove the glazing bars and sash cords and remove any paint off the sash stops using the help of a utility knife. When the sashes are back in place, you can reattach the stops using nails that are small enough to avoid damaging the weight that is balancing.

Reassemble the sash by inserting the upper sash first into its track, then the lower sash. Make sure the sash stoppers are aligned properly with the frame, and then reconnect the beads that separate if required. Finally, reattach the sash cords or chains and then re-attach the sash pulley axles.