Sash Windows Repair and Replacement

Older sash windows may suffer from a range of issues including draughts rattles, and inadequate insulation. A little care can often bring them back 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 remove any cords or chains. The hardware should be stored in a bag with the label.

Sealing

Sash windows can look stunning in old buildings but they require maintenance and could be susceptible to problems like cracked putty, wet rot and draughts. Sealing, replacement or repair of the sash window is an effective method to minimize these issues and improve energy efficiency.

Draughts are mainly caused by gaps between the sash and the frame. They can also lead to noise and rattling, which can reduce soundproofing. Various methods can be used to stop air leaks from a sash window doctor, including sealing beads, specialty products and secondary glazing.

A common problem is a gap between the top of the sash and the jamb frame, or the bottom of the sash and the sill. This can result in the leaking of moisture the wood, rotting and the growth of mould. Seal the gap using silicone, polyurethane, or foam sealant.

Installing a new sash runner, or spring bronze could be required if a gap prevents windows from opening and shutting smoothly. These are a type of bronze that are stapled or nailed into the edges of the lower sash in order to prevent sideways rattle, and they can be purchased at DIY stores. Tubular vinyl weather-stripping is another option however it has a tendency to tear and make a difference to the appearance of windows.

It is important to measure the entire window opening prior to installing a an alternative sash runner. It is recommended to take measurements from the top of the sash to the horizontal centerline of the meeting rail, and from the bottom of the sash down to the sill. These measurements can be incorporated into the new runners, which will ensure a perfect fitting and better operation of the window.

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

A piece of material should be cut to the width of the sash, with an additional inch on each side to allow for movement. It should be trimmed square and positioned so that the ends are aligned to the angle of the window sill. It is also essential to use stainless steel screws, as brass can rust, and the best quality silicone or polyurethane adhesive.

Refurbishment

The sash is an attractive historical feature of a lot of homes. They are beautiful, but they can be susceptible to problems. Rattling, draughts, sticking or leaking are typical issues. Rotting frames and rails that meet, as along with broken glazing bars, faulty frames, or rotten weights can all cause problems. When these problems occur it's time for an sash repair or replacement.

Refurbishment is more expensive alternative than replacing the sash itself but it will restore the look and function of your sash window as good, if not superior to its original state. It involves lining the joining rail and sash box using traditional putty and repairing any rot-related damage. Re-painting the frame of the timber is also included, as well as re-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 to reduce rattling and improve insulation.

If the need for a new sash arises the frame can be constructed from like-for-like designs to match the old frame and maintain the character of your house. This is particularly crucial for listed buildings, where any changes to the windows require planning permission.

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

If a window has been damaged, it is crucial to decide between repair or replacement since each kind of repair will require a different degree of expertise and expense. If a significant portion of the glass in the sash is missing replacing it is the better alternative. But, if the glass is damaged in a tiny section or a sill is decaying, a repair may be the better option.

Replacement

Although many homeowners want to keep their old windows in good condition, deterioration could eventually result in problems like draughts, rattles, or even broken glass. This is why replacing sash windows is often the only solution to these issues. However, there are ways to improve sash windows beyond just replacing them, including installing draughtproofing and secondary glazing.

Take note of the severity of the issue. It may not be necessary or suitable to replace the window. A foggy glass problem, for example, is usually caused by the sash and can be addressed without having to tear out the entire frame. It is usually 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 a lot of moving parts. It can be a challenge to fix common problems like broken panes or sash cables that have snapped. The majority of homeowners don't want remove the window frame in order to fix these problems. Many homeowners choose to engage a professional for these reasons.

A specialist can help restore sash windows to their original splendor or even bring them up to modern energy standards. This could include reconditioning frames and fitting secondary glass to prevent heat from escaping through the window. It is also possible to add a brush-pile strip to reduce drafts and stop the window from squealing.

To begin the repair, take off the window stops. (The moldings are located in front of the lower glass). Then you can loosen the staff, and pull out the lower window sash. Remove the cords and chains from both sides. Then remove the sashweights from the bottom of the cavity for weight. Keep the hardware in a safe position. Use a heat gun to soften the old, hardened filler or putty. Scrape it off using a blade made of putty. Reassemble the window. Reattach the hardware. Lubricate the pulleys by using Teflon or silicone spray. Install the parting beads and reinstall upper sash.

Repair

It is crucial for homeowners to make a choice on whether to replace or repair their sash windows. Modern replacements have many benefits, but the original features in an older home can add the character and value. They are also cheaper to repair instead of replacing. Maintaining them in good condition can also save energy costs. Sash windows can be susceptible to rattles and drafts. This can lead to higher energy bills and even damage to the frame and the sash.

Sash windows can be a challenge to open and close. The sliding mechanism may be slack or become draughty. It's best to leave the repair of a window sash to a professional, as they require extensive removal. With the right tools and experience it is possible to repair an the old sash window Doctor yourself. Adam shows Jess the basics:

The process of bringing the window apart starts with the removal of any security fittings on the front of the lower sash. Next, remove the staff bead and remove the bottom sash. Then, remove the chains or cords on both sides and knot them to stop them from being pulled back into the frame by the attached weights. It's now time to remove 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 massive iron or lead cylinder, which is tucked away in a cavity, and supported by an elastic cord. To stop the sash falling into the void, make a hole in it using a nail and window Doctor sacrifice the weight.

Once the sashes are free clean the jamb and meet rails, remove the glazing cords and sash bars, and remove any paint from the sash stops with a utility knife. After the sashes have been put returned to their original positions, you can attach the stops using nails that are not too large to risk puncturing the balancing weight.

Reassemble the sash by placing the upper sash first on its track, then the lower sash. Make sure that the sash stops are aligned properly with the frame, and then reattach the parting beads if needed. Reattach the sash chains or cords and attach the sash pulleys.