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Sash Windows Repair and Replacement

Older sash windows may be prone to a variety of issues, including draughts rattles, and poor insulation. A little bit of care can often restore them to their original performance.

First, scrape off the paint seal from the window stop using a utility knife. Remove the staff bead, pull out the upper sash, and remove any cords or chains. Keep the hardware in a bag that has a label.

Sealing

Sash windows are beautiful in old buildings but they require maintenance and are susceptible to issues such as cracks in putty, wet rot, and drafts. Repair, sealing or replacement of the windows in sash is a great method to eliminate these issues and improve energy efficiency.

The gaps between sash frame are the primary cause of drafts. They can also cause rattles and reduce sound-proofing. Various methods can be used to reduce air leaks in the sash window, such as sealing beads, special products, and secondary double glazing windows repairs.

A gap between the top and bottom of the sash, and the jamb frame, is an issue that is frequent. This can cause moisture to leak into the wood, which can cause rotting and the growth of mold. Seal the gaps with silicone, polyurethane, or foam sealant.

Installing a new sash runner, or spring bronze could be required if a gap prevents windows from opening and shutting effortlessly. These are strips of bronze that are stapled or nailed onto the edges of the lower sash to prevent sideways rattle. They can be purchased from DIY stores. Tubular vinyl weatherstripping can also be used, but it tends to rip and can detract the appearance of your window.

It is essential to take measurements of the entire window opening prior to installing the replacement sash runner. It is best to measure from the top of the sash up to the horizontal line on the meeting rail and from the bottom sash down to the sill. These measurements can be incorporated into the new runners, which will help ensure a proper fit and a better performance of the window.

In older structures there is a greater gap between the sash as well as the frame on the leading edge. It can be draught-proofed using strips of V-strip that is self-adhesive. However it is essential to take this into consideration when measuring and cutting material.

The strip should be cut to the height of the sash, with an inch extra on each side to allow for movement. The strip should be cut square and placed so that the ends are aligned to the angle of the window sill. Use stainless steel screws as brass may be rusty. Also, make sure to use high-quality polyurethane or silicone glue.

Refurbishment

The sash is a stunning historic feature in many homes. But despite their beauty, these windows are prone to a range of issues. Common problems include rattling, draughts or sticking. Frames that are rotting and rails that connect them, as along with broken double glazing repairers bars, damaged frames or weights that are rotten can all cause problems. When these problems occur it's time to consider a sash repair or replacement.

Refurbishment can be more expensive than replacing the sash, but can restore the appearance and function to the same level that it was in its original form. It involves lining the meeting rail and sash boxes with traditional putty and fixing any rot damage. It also involves re-painting the frame with timber and reglazing 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 rattling.

If a replacement sash is needed it can be constructed using the same design to match the frame you have. This will maintain the style and character of your home. This is especially important for buildings that are listed, as any changes to the windows require planning permission.

Compare the metal tabs on the new window with the old sash before installing it (see below). If they're different shapes, the new sash will not fit in the slots of the window frame.

It's important to decide whether to repair or replace windows that are damaged, as each choice will require a different level and cost of expertise. For example when a sash window has a significant piece of glass missing, a replacement will be the best choice. But when the glass is damaged in a small area or a sill is rotting then a repair will be more appropriate.

Replacement

While a lot of homeowners are eager to keep their old windows in good condition, the deterioration of the windows can cause problems such as rattles, draughts or even broken glass window repair. These issues usually point to an inevitable replacement as the only feasible solution. However, there are ways to improve sash windows that go beyond replacing them, including installing draughtproofing and secondary glazing.

Consider the extent of the issue. It may not be necessary or even suitable to replace the window. Foggy glass for instance, is usually caused by the sash and can be resolved without tearing out the entire frame. A weak seal can often be corrected with a few simple fixes rather than an expensive full-frame tear-out and replacement.

Sash windows are a complicated design with a lot of moving parts. It can be challenging to fix common problems like cracked panes or sash cables that have snapped. Many homeowners do not want to remove the window frame in order to fix these problems. Many homeowners opt to hire a specialist for these reasons.

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 fitting secondary glass repairs near me to stop heat from getting out of the window. It can also be helpful to put in a brush pile strip to stop the rattling and decrease drafts.

To begin a repair project take out the window stops (the moldings that are in front of the lower sash). Then loosen the staff and pull out the lower window sash. Take off the chains or cords that are on both sides. Finally, remove the sash weights from the bottom of the cavity and take them off. Keep the hardware in a secure location. Use a heat gun to soften hardened filler or putty. Scrape it off with the blade of a putty. Reassemble the window, reconnect the hardware and lubricate pulley axles using silicone or Teflon spray. Install the parting beads and put back the upper sash.

Repair

It is important for the homeowner to decide whether to replace or repair their sash windows. Modern replacements are beneficial in many ways, but the original features in an older home can add authenticity and value. They are also cheaper to repair rather than replace. Maintaining them in good shape can help lower energy costs. Sash windows can be susceptible to drafts and rattles. This can result in higher energy bills and damage the frame and sash.

Sash windows are notoriously difficult to close and open, and the traditional sliding mechanism can be displaced from its track or become draughty. Repairing a sash window requires extensive dismantling of the window frame and is best left to the professionals. With the right tools and skills it's possible to repair an old sash window yourself. Adam shows Jess how to start:

Getting the window to come apart begins by removing any security fittings on the front of the lower sash. Then, remove the staff bead, then take the sash off the bottom. Then, take the cords or chains on both sides and knot them to prevent them being pulled back into the frame by the attached weights. The next step is to take out the upper sash. Take out the sash stops, a thin vertical strip of wood that holds the sash. Also, remove any painted-covered hardware. Reverse the sash to reveal the weight. It is a heavy iron or lead cylinder that is concealed inside a cavity and secured by cords. To stop the sash falling into the void pierce it with a nail and sacrifice the weight.

After the sashes have been removed clean the jambs and rails that connect them. Remove the double glazing window repairs bars and the cords for the sash. Then using a utility knife take off any paint from the sash stop. Reattach the stops when the sashes are reinstalled. Use nails that are small enough not to damage the balancing weight.

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