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Sash Windows Repair and Replacement

Older sash windows be prone to a variety of issues including draughts rattles and poor insulation. With a little care they can be restored to a high level of performance.

First, remove the seal on the paint of the window stop with a utility knife. Then, take off the staff bead, then remove the upper sash by removing chains or cords and storing the hardware in a bag marked.

Sealing

Sash windows are beautiful in old buildings, however they require maintenance and could be susceptible to issues like cracked putty, wet rot, and drafts. It is possible to reduce energy loss and improve the efficiency of sash windows by replacing, repairing or sealing them.

Draughts are usually caused by gaps between the sash and the frame. They can also trigger rattles and reduce sound-proofing. Various methods can be used to limit air leaks within a sash window, including sealing beads, specialty products, and secondary glazing.

A gap between the top and bottom of the sash and the jamb frame, is an issue that is common. This can lead to the leaking of moisture, rotting of the wood and the growth of mould. Seal the gap using silicone, polyurethane or foam sealant.

Installing a new sash runner, or spring bronze may be necessary if a gap prevents windows from closing and opening smoothly. These strips of bronze are tied or stapled to the lower sash edges to stop sideways rattling. They can be bought at DIY stores. Weatherstripping made of tubular vinyl can also be used, but it is more likely to tear and may alter the look of your window.

It is important to take measurements of the entire window opening before installing an alternative sash runner. It is recommended to measure from the top of the 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 later be transferred to new runners that will ensure a better fit and operation of the window.

In older buildings there is a larger gap between the sash and the frame on the leading edge. It can be draught-proofed by using a strip of V-strip which is self-adhesive. However it is essential to take this into account when measuring and cutting the material.

The strip should be cut to the height of the sash with an inch extra on each side to allow movement. It should be cut squarely and positioned to match the angle of the sill. Make sure to use stainless steel screws since brass may get rusty. Also, use a high quality silicone or polyurethane glue.

Refurbishment

The sash is a stunning historic feature in many homes. But despite their beauty, these windows are prone to a myriad of issues. Common problems include rattling, stickiness or draughts. And rotting frames and meeting rails, broken glass bars or faulty weights can create a mess. If you are experiencing any of these issues, it is time to replace or doors repair your sash.

Refurbishment may be more expensive than replacing the sash, but it will restore the appearance and functionality to the same level in its original condition. Refurbishment involves the lining of both the meeting rail and the sash box with traditional putty, and repairing any damage caused by rot. It also involves painting the frame of timber 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 put in brush pile weather strip to minimize the noise of rattling.

If the need for a new sash arises the frame can be constructed from like-for-like designs to match the old frame and maintain the style of your home's historic design. This is especially important for listed properties where any changes made to windows will require planning permission.

Compare the metal tabs on the new window to the old sash before installing it (see below). If these are different shapes the new sash will not fit in the window frame slots.

It is important to decide if you want to repair or replace the damaged window, since each option will require a different level and amount of expertise. If a significant portion of the glass in a sash is missing, replacing it would be a better alternative. But in the event that the glass has been damaged in a tiny section or a sill is decaying, a repair may be more appropriate.

Replacement

Many homeowners would like to keep their old sash window in good condition, however the deterioration of the window will eventually cause issues like draughts or rattles. Broken glass may also occur. These issues usually lead to a replacement as the only sensible solution. There are other options to improve the performance of sash windows rather than replacing them. They can be improved by the installation of secondary glazing and draught-proofing.

Take note of the severity of the problem. It might not be necessary or necessary to replace the window. For example, a foggy glass issue usually occurs in the sash itself and can usually be solved without tearing out the entire frame. It is often possible to fix a poor seal using a couple of simple solutions, rather than cutting out the entire frame and reinstalling it.

Sash windows are surprisingly complicated in their design and come with many moving parts. This is why it can be tricky 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 the majority of homeowners would like to tackle themselves. Many homeowners choose to hire a specialist for these reasons.

Specialists can restore sash window frames back to their original glory or make them more up-to-date with modern energy standards. This can include reconditioning frames and installing secondary glass to stop heat from escaping through the window. It is also possible to install a brush pile strip to stop rattling, and reduce drafts.

To begin a repair project, remove the window stops (the moldings on the front of the lower sash). Then you can loosen the staff, and remove the lower window sash. Remove the chains and cords from both sides. Finally, remove the sash weights from bottom of the weight cavity and take them off. Keep the hardware in a secure location. Use a heat gun to soften the old, hardened filler or putty. Scrape it off with the blade of a putty. Reassemble the window. Reattach the hardware. Lubricate the pulleys using Teflon or silicone spray. Reinstall the parting bead, and install 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 of an older home can add character and value. They are also cheaper to repair double glazing window than replacing. Maintaining them in good shape can also save energy costs. Sash windows are prone to rattles, drafts, timber and condensation, and these problems can lead to increased energy bills and damage to the frame and the sash.

Sash windows are notoriously difficult to open and close and the standard sliding mechanism can become dislodged from its track or become draughty. Repairing a sash windows requires extensive dismantling of the window frame and should be left to professionals. With the right tools and experience, it is possible to fix old sash windows yourself. Adam shows Jess the basics:

The process of bringing the window apart begins with the removal of any security fittings that are in front of the lower sash. Then, remove the staff bead. Finally, pull out the sash at the bottom. Then, pull out the chains or cords on both sides, and tie them to stop them from being pulled back into the frame by the weights that are attached. Now it's time to remove the upper sash. Unscrew the sash stoppers (a thin vertical strip of wood that holds the sash) and then loosen any paint-encrusted hardware. Pull the sash back to reveal the weight. It is a heavy iron or lead cylinder that is hidden inside a cavity and supported by an elastic cord. To stop the sash from falling into the void, pierce it with a nail and then let the weight go.

After the sashes have been removed clean the jambs and rails that connect them. Remove the glazing bars as well as the cords of the sash. Then, using a utility blade take off any paint from the sash stop. Reattach the stops when the sashes have been reinstalled. Use nails that are not large enough to damage the balancing weight.

To reassemble the sash, put the top sash into its track first, and then the lower sash. Make sure that the sash stops are properly aligned with the frame, and reattach the beads that separate if required. Reattach the sash cords or chains and then install the sash pulleys.