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Sash Windows Repair and Replacement

Older sash windows may be plagued by a variety of issues, including draughts rattles, and poor insulation. With a little care, they can be restored to a higher level of performance.

First, cut off the seal with a utility knife. Remove the staff bead, pull out the upper sash, and take out any chains or cords. The hardware should be stored in a bag that has a label.

Sealing

Sash windows look stunning in older buildings, however they require care. 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 improve the efficiency of energy.

Draughts are mostly caused by gaps between the sash and frame. They can also trigger noise and rattling, which can reduce soundproofing. Sealing beads, special products, and secondary glazing may be used to limit the air leakage within a shutter.

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

If a gap is hindering the windows from closing and opening without a hitch, it might be necessary to install new sash runners or spring bronze. These bronze strips are stapled or nailed to the sash's lower edges to stop the rattling of the sides. They are available at DIY stores. Tubular vinyl weather-stripping is an alternative option, but it is prone to tear, and can affect the appearance of a window.


When replacing sash runners it is essential to measure the window opening. It is best to measure from the top of sash up to the horizontal centerline on the rail of the meeting and from the bottom sash down to the sill. These measurements can then be transferred to new runners that will ensure the best fit and function of the window.

In older buildings the gap between the sash and frame is usually larger around the leading edge. It can be draught-proofed by using a strip of V-strip that is self-adhesive. However, it is important to consider this when cutting and measuring material.

The strip should be cut at the top of the sash, with an inch extra on each side to allow movement. It should be trimmed squarely and placed to match the angle of the sill. It is also important to make use of stainless steel screws because brass is prone to rust, and high-quality polyurethane or silicone adhesive.

Refurbishment

The sash is a beautiful, historical feature of many homes. Yet despite their beauty, these windows are susceptible to a range of issues. Draughts, rattling or leaks are all common problems. The rotted frames and the rails that meet, as and broken glazing bars, faulty frames or weights that are rotten are all causes of problems. If you experience any of these issues it's time to replace or repair your sash.

Refurbishment is a more expensive alternative than replacing the sash itself but it can restore the look and function of your sash window as good if not better than its original state. Refurbishment involves re-lining the meeting rail as well as the sash box using traditional putty, and then repairing any damage caused by rot. It also includes re-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 strips to lessen rattling and improve insulation.

If you require a new sash it can be constructed from similar designs to the frame that was previously used and keep the style of your home's historic design. This is particularly crucial for listed homes where any changes made to the windows will require planning permission.

Compare www.repairmywindowsanddoors.co.uk/dulwich-windowrepair/ of the new window with those of the old sash before installing it (see below). If the tabs are different shapes, the new sash will not fit correctly into the window frame slots.

It's important to decide whether to replace or repair a damaged window, as each option will require a different level and level of knowledge. For example, if a sash window has a significant piece of glass that is missing, then a replacement will be the best choice. If the glass is only damaged in a small region or a sill has begun to decay or rotting, then a repair could be better.

Replacement

While many homeowners are keen 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 it's often the only option to solve these issues. However, there are other ways to improve sash windows that go beyond replacing them, like installing draughtproofing and secondary glazing.

It's important to consider the severity of a issue, as it may not be feasible to replace a complete window. A foggy glass problem for instance, is usually caused by the sash, and can be resolved without tearing out the entire frame. It is typically possible to fix a poor seal with a few 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 a challenge to remedy some common problems, like snapped sash cords or broken panes. Resolving these issues often requires removal of the window frame which isn't something the majority of homeowners would like to tackle themselves. For these reasons, many choose to work with a professional.

Specialists can restore sash window frames back to their original splendor or make them more up-to-date with modern energy standards. This could include reconditioning frames and installing secondary glass to block 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, remove the window stops (the moldings in front of the lower sash). Then you can loosen the staff, and pull out the lower window sash. Take off the chains or cords on both sides. Finally, remove the sash weights and the bottom of the cavity and take them off. Keep the hardware in a secure place. Soften any old filler, hardened putty, or filler with a heat gun and scrape it off with a putty knife. Reassemble the window, attach the hardware and lubricate the pulley axles with silicone or Teflon spray. Install the parting beads and then reinstall the upper sash.

Repair

The decision to repair or replace a sash window is an important one for homeowners. Although modern replacements offer a host of benefits, the original features of an older home give authenticity and value to the property and are usually cheaper to fix than replacing them. Keeping them in good condition will also help you save money on energy. Sash windows can be susceptible to drafts and rattles. This can lead to higher energy bills and damage the frame and the sash.

Sash windows can be difficult to open or close. The mechanism that slides can become sloppy or draughty. Repairing a sash window involves extensive dismantling of the window frame and is best left to professionals. With the right tools and experience it is possible to repair an the old sash window yourself. Adam shows Jess the basics:

Remove any security fittings that are just in front of the lower window sash. Then, you can remove the staff bead. Finally, pull out the sash at the bottom. Remove the chains and cords from both sides, and knot them in a way that they can't be pulled back by the weights. It's time to remove the upper sash. Remove the sash stops and a thin strip of wood that holds the sash. Also, take off any painted-covered hardware. Reverse the sash to reveal the weight. It is a heavy iron or lead cylinder, which is tucked away in a cavity and is secured by an elastic cord. To keep the sash from falling into the void, pierce it with a nail and sacrifice the weight.

After the sashes are removed, clean the jambs and meet rails. Remove the glazing bars and the cords of the sash. Then using a utility knife take off any paint that is on the sash stop. Reattach the stops after the sashes are reinstalled. Use nails that are small enough not to puncture the balancing weight.

Reassemble the sash by inserting the upper sash first on its track, followed by the lower sash. Make sure the sash stoppers are aligned properly with the frame, and reattach the beads that separate if required. Reattach the sash cords or chains and install the sash pulleys.

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