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Sash Windows Repair and Replacement

Older sash upvc windows repairs be prone to a variety of issues including draughts rattles and poor insulation. A little care can often bring them back to a top level of performance.

First, cut off the paint seal using an 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 container with an identification label.

Sealing

Sash windows are beautiful in old buildings, however they require regular maintenance and can be subject to issues like cracks in putty, wet rot, and drafts. It is possible to reduce energy loss and increase the efficiency of windows with sash by replacing them the windows, repairing upvc windows or sealing them.

Draughts are mainly caused by gaps between the sash and frame. They can also trigger rattling and reduced sound-proofing. Sealing beads, specialist products, and secondary double Glazing Repairers may all be used to reduce the air leakage within a shutter.

A common problem is a gap that exists between the top of the sash and the jamb frame, or between the bottom of sash and the sill. This could 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.

If a gap in the window is preventing windows from opening and closing without a hitch, it might be necessary to install new sash runners or spring bronze. These are strips of bronze that are stapled or nailed into the edges of the lower sash to stop sideways rattle, and they can be purchased from DIY stores. Tubular vinyl weather-stripping is an alternative option, but it is prone to rip, and it can affect the appearance of a window.

It is essential to determine the size of the window opening prior to installing a new sash runners. It is best to take measurements from the top of the sash up to the horizontal line on the rail that connects them and from the bottom sash down to the sill. These measurements can be transferred to new runners that will ensure a better fit and operation of the window.

In older structures, the gap between frames and sash is typically wider around the leading edge. It is possible to draught proof with a strip of self-adhesive V-strips, but it is important to account for this when cutting and measuring the material.

The strip should be cut to the height of the sash with an inch added on each side to allow movement. It should be cut square and placed so that the ends are matched to the angle of the window sill. It is also essential to use stainless steel screws, since brass can rust and a high-quality polyurethane or silicone adhesive.

Refurbishment

The Sash window is a beautiful and historic feature of many homes. However, despite their beauty these windows are prone to a variety of problems. Draughts, rattling, sticking or leaks are all common problems. The rotted frames and the rails that meet, as and broken glazing bars, damaged frames or weights that are rotten can all cause problems. If you are experiencing any of these problems it's time to replace or repair your sash.

Refurbishment is a more expensive option than simply replacing the sash, but it can improve the appearance and functionality of your sash window as good if not superior to its original state. It involves re-lining the meeting rail and sash box using traditional putty, and then repairing any damage caused by rot. 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 is also recommended repairs to double glazing put in brush pile weather strip to prevent the rattling.

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

Compare the metal tabs of the new window with those of the old sash prior to installing it (see below). If they are different shapes, the new sash will not fit in the window frame slots.

It is important to decide if you want to replace or repair a damaged window, as each option will require a different level and amount of expertise. For instance when a sash window has a large chunk of glass missing then replacement is the best choice. However in the event that the glass has been damaged in a small area or a sill has been decaying, a repair may be the better option.

Replacement

While many homeowners are keen to keep their old windows in good condition, deterioration could eventually cause problems such as draughts, rattles, or even broken glass. This is why replacing them is often the only solution to these problems. There are other methods to improve sash window performance other than replacing them. They can be improved by the installation of secondary glazing and draught-proofing.

Think about the scope of the problem. It may not be necessary or even suitable to replace a window. A glass that is foggy for instance is typically caused by the sash and can be addressed without having to tear out the entire frame. A poor seal can also often be remedied by making a few minor adjustments rather than an expensive full-frame tear-out and replacement.

Sash windows are a complicated design with a lot of moving parts. This is why it can be tricky to remedy some common problems such as snapped sash cords or broken panes. The majority of homeowners don't want remove the window frame to fix these problems. Many homeowners opt to engage a professional for these reasons.

A specialist can help restore sash windows back to their original glory, or even bring them up to current energy standards. This could include reconditioning frames and installing secondary glass to stop heat from getting out of the window. It is also possible to put in a brush pile strip, to stop rattling and reduce drafts.

To start a repair project, remove the window stops (the moldings on the front of the lower sash). Next, loosen the staff bead, then remove the lower sash. Remove the chains and cords from both sides. Finally, remove the sashweights from the bottom of the cavity for weight. Keep the equipment in a secure place. Soften any old filler or hardened putty using a heat gun, and scrape it off with the help of a putty knife. Reassemble the window, reconnect the hardware and lubricate the pulley axles by using silicone or Teflon spray. Reinstall the parting beads and reinstall the upper sash.

Repair

The decision to repair or replace windows with sash is a major one for the homeowner. While modern replacements provide a host of benefits but the original features of an older home give character and value to the home and are usually cheaper to repair than replacing them. Maintaining them in good condition will also help you save money on energy. Sash windows are prone to rattles, drafts and condensation, and these issues can lead to higher cost of energy and damage to the frame and the sash.

Sash windows can be difficult to open and close. The mechanism for sliding could become dislodged or draughty. It's best to leave the repair of a window sash to a professional because it requires a lot of dismantling. With the right tools and knowledge, it is possible to repair an the old sash window yourself. Adam shows Jess the basics:

Getting the window to come apart begins with the removal of any security fittings in front of the lower sash. Then, remove the staff bead, then pull out the bottom sash. Then, pull out the cords or chains on both sides, and tie them to stop them from being pulled back into the frame by the weights attached to them. Now it's time to take out the upper sash. Unscrew the sash stops (a thin vertical strip of wood that is used to hold the sash) and loosen any paint-encrusted hardware. The sash should be pulled back to reveal the weight. It is a massive iron or lead cylinder, which is tucked away inside a cavity and secured by an elastic cord. To stop the sash from falling into the void, you must pierce it with a nail and sacrifice the weight.

After the sashes have been removed clean the jambs as well as meet rails. Remove the glazing bars as well as the cords of the sash. Then, using a utility blade take off any paint that is on the sash stop. When the sashes are returned to their original positions, you can attach the stops using nails that are not too large to risk cutting the balancing weight.

Reassemble the sash by placing the upper sash on top of its track, followed by the lower sash. Check that the sash stops and the frame are aligned properly. If necessary, reattach any beads used for parting. Then, reconnect the sash chains or cords and then re-attach the axles for the sash pulleys.