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Sash Windows Repair and Replacement

Older sash windows can suffer from a range of problems including draughts, rattles and poor insulation. With a little effort they can be restored to their original performance.

First, knock off the seal on the paint of the window stop with an utility knife. Remove the staff bead, then pull out the upper sash, and take out any chains or cords. Store the hardware in a bag with an identification label.

Sealing

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

Draughts are mostly caused by gaps between the sash and the frame. They can also lead to noise reduction and rattling. There are a variety of methods to limit air leaks within the sash window, such as sealing beads, specialty products and secondary double glazing.

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

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

It is crucial to take measurements of the entire window opening prior to installing the an alternative sash runner. It is recommended to measure from the top of the sash to the horizontal line of the rails that meet, and from the bottom of the sash to the sill. These measurements can be incorporated into the new runners, which will help ensure a perfect fit and a better performance of the window.

In older structures there is a greater gap between the sash and frame around the leading edge. It can be draught-proofed using a strip of V-strip which is self-adhesive. However, it is important to take this into consideration when measuring and cutting the material.

A strip should be cut to the width of the sash. There should be an extra inch on each side for movement. The strip should be cut square and placed so that the ends are matched to the angle of the window sill. Use stainless steel screws as brass can rust. Also, make sure you use the highest quality silicone or polyurethane glue.

Refurbishment

The Sash window is a beautiful and historic feature of many homes. These windows are beautiful but they can also be susceptible to issues. The most frequent issues are rattling, stuck or draughty windows. The rotting of frames and connecting rails, broken double glazing repair bars or weights that are not working properly can create a mess. When these problems occur it's time for repairs or replacements to your sash.

Refurbishment can be a more costly alternative than replacing the sash, repairer but it can improve the appearance and functionality of your sash window to as good if not better than its original state. It involves lining the meeting rail and sash boxes with traditional putty and fixing any rot damage. Re-painting of the timber frame 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's also recommended to install brush pile weather strip to prevent the noise of rattling.

If a new sash is required, it can be made from similar designs to the frame that was previously used and keep your property's heritage style. This is especially important for listed properties where any changes made to the windows will require planning permission.

Before you put the new window in, it's best to examine its metal tabs with those on the sash that was previously used (see below). If the tabs are different shapes, the new sash won't fit correctly into the window frame slots.

When a window is damaged it is essential to decide between replacement or repair, because each kind of work will require a different level of expertise and cost. For instance when a sash window has a large piece of glass that is missing, then replacement is the best choice. However, if the glass is damaged in a tiny section or a sill is decaying, a repair may 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 cause problems such as rattles, draughts, or even broken glass. This is why it's often the only solution to these issues. There are other methods to improve sash window performance other than replacing them. This includes installing secondary glazing and draught-proofing.

It is crucial to assess the severity of a issue, since it might not be feasible to replace the entire window. For instance, a foggy glass issue usually occurs within the sash and is usually able to be resolved without having to tear out the entire frame. It is often possible to fix a poor seal using a couple of simple fixes, rather than ripping out the entire frame and reinstalling it.

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 snapped sash cords or broken panes. Many homeowners do not want to disassemble the window frame to fix these problems. Many homeowners opt to engage a professional for these reasons.

Specialists can restore sash window frames to their original splendor or bring them up-to-date with modern energy standards. This could include reconditioning frames and installing secondary glass to prevent heat from getting out of the window. It is also possible to install a brush pile strip, to stop the rattling and decrease drafts.

To begin a repair, remove the window stops (the moldings in front of the lower sash). Next, loosen the staff bead, then pull out the lower sash. Remove the chains or cords that are on both sides. Then remove the sashweights from the bottom cavity of the weight. Keep the hardware in a secure location. Heat gun to soften old, hardened filler or putty. Scrape it away with a blade made of putty. Reassemble the window, attach the hardware and then lubricate the pulley axles using silicone or Teflon spray. Install the parting beads again and reinstall the upper part of the sash.

Repair

The choice to replace or repair the sash window is an important one for homeowners. Modern replacements have many benefits, but the original features in an older house can add character and value. They are also less expensive to repair rather than replace. Maintaining them in good shape can help save on energy costs. Sash windows can be susceptible to drafts and rattles. This could result in higher energy bills and damage the frame and sash.

Sash windows are notoriously difficult to open and close, and the traditional sliding mechanism can be displaced from its track or become draughty. Repairing a sash window involves extensive dismantling of the window frame and should be left to a professional. But, with the right tools and experience it's possible to fix old windows with sash yourself. Adam shows Jess the basics:

Making the window come apart starts by removing any security fittings that are in front of the lower sash. Then, you can remove the staff bead. Then, remove the bottom sash. Then, pull out the chains or cords on both sides and knot them to prevent them being pulled back into the frame by the weights that are attached. The next step is to take out the upper sash. Unscrew the sash stoppers (a thin vertical strip of wood that supports the sash) and then loosen any painted-covered hardware. Pull the sash to reveal the balancing weight, which is a large lead or iron cylinder enclosed in a concealed cavity and held by rope. To keep the sash from falling into the void, make a hole in it using nails and remove the weight.

After the sashes are removed, clean the jambs and meet rails. Remove the glazing bars and cords of the sash. Then employing a utility blade take off any paint that is on the sash stop. When the sashes are back in place, reattach the stops using nails that are not too large to risk damaging the balancing weight.

To reassemble the sash place the top sash on its track first, then the lower sash. Verify that the sash stoppers and the frame are aligned properly. If needed, reconnect any parting beads. Reattach the sash cords or chains and attach the sash pulleys.