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Sash Windows Repair and Replacement

Sash windows that are older than 20 years old can be afflicted with many issues such as rattles and draughts. They may also be inefficiently insulated. A little care can often restore them to their original performance.

First, remove the paint seal from the window stop using an utility knife. Remove the staff bead, pull out the upper sash, and take off any chains or cords. The hardware should be stored in a container with a label.

Sealing

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

Draughts are mostly caused by gaps between the sash and frame. They can also trigger rattles and reduce sound-proofing. Various methods can be used to limit air leaks within a sash window, including sealing beads, special products and secondary glazing.

A common issue 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, rotting it, and mold growth. Seal the gap using silicone, polyurethane or foam sealant.

If a gap is hindering the windows from closing and opening easily, it could be necessary to put in new sash runners or spring bronze. These bronze strips are stapled or nailed to the lower sash edges in order to prevent sideways rattling. They can be bought at DIY stores. Tubular vinyl weatherstripping can also be used, however it is prone to tear and can alter the appearance of your window.

When installing replacement sash runners it is essential to measure the window opening. It is best to measure from the top of the sash to the horizontal line of the rail that connects it and from the bottom of the sash to the sill. These measurements can be incorporated into the new runners, which will ensure a good fit and a better performance of the window.

In older structures there is a larger gap between the sash and the frame on the leading edge. It can be draught-proofed by a self-adhesive V-strip, but it is crucial to take this into consideration when measuring and cutting the material.

A strip should be cut to the length of the sash, with an extra inch on each side for movement. It should be trimmed to a square shape and then positioned so that the ends are aligned to the angle of the window sill. Use stainless steel screws as brass can rust. Also, make sure to use high-quality polyurethane or silicone glue.

Refurbishment

The windows with sash are a stunning and historic feature of many homes. Yet despite their beauty, windows like sash windows can be prone to a myriad of issues. The most frequent issues are rattling, stickiness or draughts. Rotting frames and meeting rails as along with broken glazing bars, faulty weights or rotten frames can cause issues. If these issues occur, it's time for repairs or replacements to your sash.

Refurbishment can be more expensive than replacing the sash, but can restore the appearance and functionality to the same level in its original condition. 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 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). Finally, it's recommended to put in brush pile weather strips in order to minimize rattling and improve insulation.

If a replacement sash needed, it can be made with the same design to match the frame you have. This will maintain the traditional style of your home. This is especially important for listed properties where any modifications made to windows will require planning permission.

Before putting the new window in place It is recommended to check the metal tabs against the tabs on the old sash (see below). If they're different sizes, the new sash will not fit into the slots of the window frame.

It is important to decide if you want to repair or replace the damaged window, since each option will require a different level and amount of knowledge. If a significant portion of the glass in the sash is missing replacing it would be a better option. If the glass is only damaged in a small area or a sill is beginning to rot, man then a repair would be better.

Replacement

While many homeowners are keen to keep their old sash windows in good working condition, deterioration could eventually result in problems like rattles, draughts or even broken glass. These issues often lead to a replacement as the only sensible solution. There are other methods to improve sash window performance rather than replacing them. This includes installing secondary glazing and draught-proofing.

Think about the scope of the issue. It might not be necessary or even appropriate to replace windows. A foggy glass problem for instance is typically caused by the sash and can be fixed without tearing out the entire frame. It is usually possible to fix a weak seal with a few simple solutions, rather than cutting out the entire frame and reinstalling it.

Sash windows are extremely complex in design and have many moving parts. It can be a challenge to fix some common problems like broken panes or sash cables that have snapped. Solving these issues usually requires dismantling the window frame, which isn't something most homeowners want to tackle themselves. Because of this, many opt to hire a specialist.

Specialists can restore sash window repair frames back to their original glory or make them more up-to-date with the latest energy standards. This can include reconditioning frames and fitting secondary glass to stop heat from escaping through the upvc window repair. It can also be helpful to put in a brush pile strip to stop rattling and reduce drafts.

To start a repair project start by removing the window stops (the moldings on the front of the lower sash). Then, loosen the staff bead, then take off the lower sash. Take the chains and cords from both sides. Finally, disconnect the sash weights from the bottom of the cavity and take them off. Keep the hardware in a safe position. Use a heat gun to soften the old, hardened filler or putty. Scrape it off using the blade of a putty. Reassemble the window. Reattach the hardware. Lubricate the pulleys using Teflon or silicone spray. Install the parting beads again and reinstall the upper sash.

Repair

It is important for the homeowner to make a decision on whether to repair or replace their sash windows. Although modern replacements offer many advantages but the original features of a home that was built earlier give authenticity and value to the home and are usually cheaper to repair than replacing them. Maintaining them in good condition can reduce the energy cost. Sash windows are prone 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 can be difficult to open or close. The mechanism for sliding could become dislodged or even draughty. Repairing a sash window repairs involves extensive dismantling of the window frame and should be left to a professional. However, with the right tools and experience it's possible to repair old windows with sash yourself. Adam shows Jess how to get started:

Remove any security fittings that are behind the lower window sash. Then, remove the staff bead. Then, take out the bottom sash. Then, take the cords or chains on both sides and knot the ends to stop them from being pulled back into the frame by the attached weights. It's time to remove the upper sash. Remove the sash stops (a thin vertical strip of wood that is used to hold the sash) and remove any paint-encrusted hardware. The sash should be pulled back to reveal the weight. It is a large iron or lead cylinder, which is tucked away in a cavity, and secured by a cord. To prevent the sash falling into the void, you must pierce it using a nail, and then sacrifice the weight.

After the sashes have been removed clean the jambs and rails that connect them. Remove the glazing bars as well as the sash cords. Then, using a utility blade, remove any paint from the sash stop. After the sashes have been put returned to their original positions, you can attach the stops using nails that are small enough to prevent damaging the weight that is balancing.

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