Sash Windows Repair and Replacement

Sash windows that are older than 20 years may have many issues, including draughts and rattles. They could also be poorly insulation. With a little attention they can be restored to a higher level of performance.

First, remove the seal on the paint of the window stop using a utility knife. Remove the staff bead, pull out the upper sash, and remove any cords or chains. Store the hardware in a container with a label.

Sealing

Sash windows can look stunning in older buildings, but they require maintenance and are susceptible to problems like wet rot, cracked putty, and draughts. It is possible to reduce energy loss and improve the efficiency of windows made of sash by replacing or repairing them, or sealing them.

Draughts are mainly caused by gaps between the sash and frame. They can also lead to noise and rattling, which can reduce soundproofing. Various methods can be used to reduce air leaks in windows with sash, including sealing beads, specialist products, and secondary glazing.

A common issue is a gap between the top of the sash and the jamb frame or between the bottom of the sash and the sill. This can result in moisture leaking in and rotting of the wood and growth of mould. The gap can be closed by caulking made of silicone or polyurethane or foam sealant.

Installing a new sash runner, or spring bronze may be required when a gap is preventing the windows from closing and opening smoothly. These are bronze strips that are stapled or nailed into the edges of the lower sash to stop sideways rattle. They are available from DIY stores. Weatherstripping made of tubular vinyl can also be used, however it is prone to tear and can alter the appearance of your window.

It is crucial to measure the entire window opening before installing replacement sash runner. It is recommended to measure from the top of sash up to the horizontal centerline of the meeting rail and from the bottom sash down to the sill. These measurements can then be transferred to new runners which will ensure the best fit and function of the window.

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

A strip must be cut to the width of the sash. There should be an extra inch on each side to allow movement. The strip should be cut to a square shape and then positioned in a way that the ends are matched to the angle of the window sill. It is also crucial to use stainless steel screws because brass is prone to rust, and the best quality polyurethane or silicone adhesive.

Refurbishment

The Sash window is a beautiful historical feature in many homes. Yet despite their beauty, windows like sash windows can be prone to a range of issues. Draughts, rattling or leaking are typical issues. Also, rotting frames, meeting rails, broken glass bars or weights that are not working properly can add to the inconvenience. When these problems occur it's time to consider an sash repair or replacement.

Refurbishment is more expensive option than simply replacing the sash, but it can bring back the appearance and function of your sash window the same or superior to its original state. Refurbishment involves the lining of the meeting rail as well as the sash box with traditional putty, and then repairing any damage caused by rot. Re-painting the frame of the timber is also included, as is the re-glazing process 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 minimize rattling.

If a new sash is needed, it can be made using the same style to match your existing frame. This will help preserve the heritage style of your property. This is especially important for listed buildings where any modifications made to the windows will require planning permission.

Compare the metal tabs on the new window with those of the old sash prior installing it (see below). If the tabs 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 choice will require a different degree and level of expertise. If a significant portion of the glass in a sash is missing replacing it would be a better option. But in the event that the glass is damaged in a tiny section or a sill is rotting then a repair will be more appropriate.

Replacement

While many homeowners are keen to keep their old windows in good condition, the deterioration of the windows can result in problems like rattles, draughts, or even broken glass. This is why it's often the only option to solve these issues. However, there are other ways to improve the sash windows beyond just replacing them, such as installing draughtproofing and secondary glazing.

Think about the scope of the problem. It may not be necessary or appropriate to replace a window. For instance, a foggy glass issue is usually a problem in the sash itself and can usually be solved without having to tear out the entire frame. It is often possible to fix a poor seal by making a few easy fixes, rather than ripping out the entire frame and replacing it.

Sash windows are surprisingly complex in design and have lots of moving parts. This is why it can be tricky to fix common issues like sash cords that are snapped or broken panes. Solving these issues usually requires removal of the window frame which isn't something the majority of homeowners would like to take on themselves. Many homeowners opt to work with a professional due to these reasons.

A specialist can assist in restoring sash windows back to their original glory, or even bring them up to current energy standards. This may include reconditioning the frames and fitting secondary glass to stop heat from getting out of the window. You can also install a brush-pile strip in order to minimize drafts and stop the window from shaking.

To begin a repair, take off the window stops. (The moldings are in front of the lower glass). Then loosen the staff and remove the lower window sash. Take the chains and cords from both sides. Then remove the sashweights from the bottom of the cavity for weight. Keep the hardware in a safe place. Heat gun to soften the old, hardened filler or putty. Scrape it off with a putty blade. Reassemble the window. Reattach the hardware. Lubricate the pulleys using Teflon or silicone spray. Reinstall the parting bead and put back the upper sash.

Repair

The choice to replace or repair upvc Windows windows with sash is a major one for homeowners. While modern replacements provide numerous benefits but the original features of an older home add personality and value to the home and are often cheaper to repair than replacing them. Maintaining them in good condition can lower the energy cost. Sash windows are susceptible to rattles, drafts and condensation, and these problems can lead to increased cost of energy and damage to the frame and the sash.

Sash windows are notoriously difficult to close and open, and the traditional sliding mechanism may become displaced from its track, or even draughty. Repairing a sash window involves extensive dismantling of the frame of the window, so it's best left to a professional. With the right tools and knowledge it's possible to fix an old sash window yourself. Adam shows Jess the basics:

Getting the window sash repairs to come apart begins with the removal of any security fittings in front of the lower sash. Next, remove the staff bead, then remove the bottom sash. Remove the cords and chains from both sides, and knot them in a way that they can't be pulled back by the weights. It's time to take off the upper sash. The sash stops must be removed and a thin wood strip that holds the sash. Also, take off any paint-encrusted hardware. The sash should be pulled back to reveal the weight. It is a massive iron or lead cylinder that is hidden inside a cavity and supported by a cord. To keep the sash from falling into the void, make a hole in it using a nail and sacrifice the weight.

When the sashes are untied Clean the jamb and meet rails, Repair Upvc windows remove the glazing cords and sash bars, and scrape off any paint from the sash stops using an utility knife. When the sashes are returned to their original positions, you can attach the stops using nails that are small enough to avoid damaging the weight that is balancing.

Reassemble the sash by inserting the upper sash on top of its track, followed by the lower sash. Make sure the sash stops are aligned properly with the frame, and reattach the beads for parting if necessary. Reattach the sash cords or chains and attach the sash pulleys.