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Sash Windows Repair and Replacement

Older sash windows may be plagued by a variety of problems including draughts, rattles and poor insulation. A little attention can often bring them back to their original performance.

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

Sealing

Sash windows are gorgeous in older structures, but they require care. They can be affected by issues such as wet-rot, cracked putty, and draughts. Sealing, replacement or repair of the windows in sash is a great method to minimize these issues and increase energy efficiency.

The gaps between the sash and frame are the primary cause of drafts. They can also trigger rattles and reduce sound-proofing. Different methods can be employed to limit air leaks within windows with sash, including sealing beads, specialist products and secondary glazing.

A gap between the top and bottom of the sash and the jamb frame is a common problem. This can result in water leaking into the wood the wood, rotting and the growth of mould. The gap can be sealed by caulking made of silicone or polyurethane or foam sealant.

Installing a new sash runner or spring bronze might be necessary when a gap is preventing windows from opening and shutting easily. These are strips of bronze that are stapled or nailed into the edges of the lower sash in order to prevent sideways rattle, and they are available from DIY stores. Weatherstripping made of tubular vinyl can also be used, but it is prone to tear and can detract the appearance of your window.

It is important to determine the size of the window opening prior to installing the new sash runners. It is best to take measurements from the top of the sash up to the horizontal centerline of the meeting rail, and from the bottom of the sash down to the sill. These measurements can be incorporated into the new runners, which will help ensure a proper fit and better operation of the window.

In older structures, the gap between frames and sash is typically larger around the leading edge. It can be draught-proofed using strips of V-strip that is self-adhesive. However it is crucial to take this into account when measuring and cutting the material.

A strip should be cut to the width of the sash, with an extra inch each side to allow to allow for movement. It should be trimmed square and placed so that the ends are matched to the angle of the window sill. Use stainless steel screws since brass may get rusty. Also, use a high quality polyurethane or silicone glue.

Refurbishment

The sash is a beautiful historic feature in many homes. These windows are gorgeous however they are prone to problems. Common issues include rattling stickiness or draughts. The rotted frames and the rails that meet, as along with broken glazing bars, faulty frames or weights that are rotten are all causes of problems. If these issues occur, it's time for an sash repair or replacement.

Refurbishment may be more expensive than replacing the sash however, it can restore the appearance and function to the same level as its original state. It involves lining the meeting rail and sash boxes with traditional putty and repairing any damage caused by rot. Re-painting the frame of the timber is also included, as is 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). It is also recommended to install brush pile weather strip to minimize the noise of rattling.

If a new sash is required, it can be made using similar designs to the old frame and maintain the character of your house. This is especially important for buildings that are listed, as any modifications to windows will require planning permission.

Check the metal tabs of the new window to the old sash before installing it (see below). If the tabs are different shapes, the new sash will not fit properly into the slots of the window frame.

It is crucial to determine whether to replace or repair windows that are damaged, as each will require a different degree and cost of knowledge. If a significant portion of the glass in a sash is missing, replacing it would be a better alternative. If the glass is damaged in a small region or a sill is rotting or rotting, then a repair could be more appropriate.

Replacement

Although many homeowners want to keep their old sash windows in good working condition, the deterioration of the windows can cause issues such as rattles, draughts, or even broken glass. This is why replacing sash windows is often the only solution to these problems. There are other options to improve the performance of sash windows other than replacing them. This includes the installation of secondary glazing and draught-proofing.

It's important to consider the severity of the problem, as it may not be appropriate or even feasible to replace a complete window. For instance, a foggy glass issue typically occurs within the sash and can usually be solved without tearing out the entire frame. It is typically possible to repair a weak seal using a couple of simple solutions, rather than cutting out the entire frame and replacing it.

Sash windows are surprisingly complicated in their design and come with a lot of moving parts. This is why it can be tricky to fix common issues such as snapped sash cords or broken panes. Many homeowners do not want to remove the window frame in order to fix the issues. This is why many homeowners choose to work with a professional.

A professional can help restore sash windows back to their original glory or even bring them up to current energy standards. This can include reconditioning the frames and fitting secondary glazing to stop heat loss through the window. It is also possible to add a brush-pile strip in order to minimize drafts and prevent the window from shaking.

To start a repair project take out the window stops (the moldings that are in front of the lower sash). Then, loosen the staff bead and pull out the lower sash. Take the chains and cords from both sides. Finally, disconnect the sash weights from the bottom of the cavity and remove them. Keep the hardware in a safe location. Heat gun to soften the old, hardened filler or putty. Scrape it off using the blade of a putty. Reassemble the window, attach the hardware and then lubricate the pulley axles using silicone or Teflon spray. Reinstall the parting bead and put back the upper sash.

Repair

It is important for the homeowner to make a decision on whether to replace or repair their sash windows. Modern replacements have many benefits however, the original features in an older home can add authenticity and value. They are also cheaper to repair than replacing. Maintaining them in good condition can also save energy costs. Sash windows are susceptible to rattles and drafts. This can lead to more expensive energy bills and can damage 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 draughty. Repairing a sash window requires extensive dismantling of the window frame, so it's best left to a professional. However, with the right tools and know-how, it is possible to repair old windows using sash. Adam shows Jess the basics:

Remove any security fittings just in front of the lower window sash. Next, take off the staff bead, then pull out the bottom sash. Remove the chains and cords from both sides, and tie them in such a way that they won't be pulled back by the weights. It's now time to take out the upper sash. Remove the sash stops (a thin vertical strip of wood that supports the sash) and then loosen any paint-encrusted hardware. Unscrew the sash to reveal the balancing weight which is a large lead or iron cylinder enclosed in a concealed cavity and secured by a rope. To stop the sash from falling into the void, you must pierce it using a nail, and then let the weight go.

After the sashes are removed, clean the jambs and the rails that meet. Remove the double glazing window repair bars as well as the sash cords. Then using a utility knife take off any paint that is on the sash stop. When the sashes are returned to their original positions, you can attach the stops using nails that are small enough to avoid cutting the weight that is balancing.

Reassemble the sash by placing the upper sash first into its track, followed by the lower sash. Verify that the sash stoppers and the frame are properly aligned. If necessary, reattach any beads that are parting. Then, reconnect the sash chain or cords and re-install the axles for the sash pulleys.