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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. A little attention can often restore them to a high standard of performance.

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

Sealing

Sash windows are gorgeous in older buildings, however they require care. They are susceptible to issues such as wet-rot, cracked putty, and draughts. It is possible to reduce energy loss and improve the efficiency of windows made of sash by replacing, repairing or sealing them.

Draughts are usually caused by gaps between the sash and the frame. They can also lead to noise reduction and rattling. Different methods can be employed to reduce air leaks in the sash window, such as sealing beads, specialty products and secondary glazing.

A gap between the top and bottom of the sash, and the jamb frame is a common problem. This can cause moisture to leak into the wood, which can cause rotting and growth of mold. Seal the gap with silicone, polyurethane or foam sealant.

Installing a new sash runner or spring bronze could be necessary when a gap is preventing the windows from opening and shutting effortlessly. These strips of bronze are stapled or nailed to the sash's lower edges to stop the rattling of the sides. They can be purchased at DIY stores. Tubular weatherstripping also can be used, but it tends to rip and can alter the appearance of your window.

It is crucial to measure the entire window opening before installing an alternative sash runner. It is recommended to take measurements from the top of the sash up to the horizontal centerline on the rail that connects them and from the bottom sash down to the sill. These measurements can be transferred to new runners, which will ensure a better fit and operation of the window.

In older buildings there is a larger gap between the sash and the frame at the leading edge. It is possible to draught proof with a strip of self-adhesive V-strip, but it is crucial to account for this when measuring and cutting the material.

The strip should be cut at the top of the sash, with an inch added on each side to allow movement. It should be cut squarely and positioned to match the angle of the sill. It is also crucial to use 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 a lot of homes. They are beautiful, but they can be prone to problems. Rattling, draughts, sticking or leaking are typical issues. The rotted frames and the rails that meet, as and broken glazing bars, faulty frames, or rotten weights can cause issues. If these issues occur, it's time for repairs or replacements to your sash.

Refurbishment is more costly than replacing the sash but can bring back the appearance and function to the same standard in its original condition. It involves lining the meeting rail and sash box using traditional putty, and then repairing any damage caused by rot. It also involves 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). Finally, it's recommended to put in brush pile weather strips to reduce rattle and increase insulation.

If you require a new sash it can be constructed from like-for-like designs to match the old frame and maintain the character of your house. This is especially important for buildings that are listed, as any modifications to windows will require planning permission.

Check the metal tabs of the new window with the old sash before installing it (see below). If they're different sizes and 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 a damaged window, as each choice will require a different degree and amount of expertise. For instance the case of a sash windows that has a large piece of glass that is missing, then a replacement will be the best choice. If the glass is only damaged in a small area or a sill is beginning to rot, then a repair would be more appropriate.

Replacement

Although many homeowners want 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. These issues typically lead to a replacement as the only logical solution. There are other options to improve sash window performance other than replacing them. They can be improved by the installation of secondary glazing and draught-proofing.

It's important to consider the severity of a problem, as it may not be appropriate or even practical to replace an entire window. For instance, a fogging glass issue typically occurs within the sash itself and is typically a solution without tearing out the entire frame. It is often possible to repair a weak seal using a couple of simple fixes, rather than tearing out the entire frame and reinstalling it.

Sash windows are a complicated design with many moving parts. It can be difficult to fix common issues like cracked panes or snapped sash cable. Many homeowners do not want to disassemble the window glass repairs frame in order to fix the issues. Many homeowners opt to work with a professional due to these reasons.

A specialist can assist in restoring windows with sash back to their original glory, or even bring them up to modern energy standards. This could include reconditioning frames and fitting secondary glass to stop heat from getting out of the window. It is also possible to add an edge strip for brush-piles to cut down on drafts and prevent the window from squealing.

To begin a repair take out the window stops (the moldings on the front of the lower sash). Then you can loosen the staff, and pull the lower window sash. Remove the chains and cords from both sides. Finally, disconnect the sash weights and the bottom of the cavity and take them off. Keep the hardware in a safe location. Use a heat gun to soften old, hardened filler or putty. Scrape it off with the blade of a putty. Reassemble the window, attach the hardware and lubricate pulley axles using silicone or Teflon spray. Reinstall the parting beads and reinstall the upper part of the sash.

Repair

The choice to replace or repair windows with sash is a major one for the homeowner. Modern replacements have many benefits however, the original features in an older home can provide authenticity and value. They are also less expensive to repair rather than replace. Maintaining them in good shape can help reduce energy costs. Sash windows are vulnerable to rattles, drafts and condensation, and these problems can lead to increased cost of energy and damage to the frame and sash.

Sash windows repairs can be difficult to open and close. The sliding mechanism may be slack or become draughty. Repairing a sash double glazed window repair involves extensive dismantling of the frame of the window and is best left to professionals. With the right tools and knowledge it is possible for you to repair old sash window yourself. Adam shows Jess the basics:

The process of bringing the window apart begins with the removal of any security fittings that are in front of the lower sash. Then, remove the staff bead, then remove the bottom sash. Then, take the cords or chains on both sides and knot them to prevent them being pulled back into the frame by the weights attached to them. Now it's time to take out the upper sash. Take out the sash stops and a thin strip of wood that is used to hold the sash. Also, remove any hardware that has been painted. Reverse the sash to reveal the weight. It is a large iron or lead cylinder that is hidden in a cavity and is held by an elastic cord. To stop the sash falling into the void pierce it with a nail and sacrifice the weight.

After the sashes have been removed clean the jamb and rails that meet, remove the glazing bars and sash cords, and strip any paint from the sash stops with a utility knife. After the sashes have been put back in place, reattach the stops using nails that are not too large to risk damaging the weight that is balancing.

To reassemble the sash place the top sash on its track first, and then the lower sash. Check that the sash stops and the frame are aligned correctly. If necessary, reattach any beads that are parting. Finally, reattach the sash chain or cords and then re-attach the axles of the sash pulleys.