Sash Windows Repair and Replacement

Older sash windows can be prone to a variety of issues, including draughts rattles, and inadequate insulation. With a little care they can be repaired to a higher level of performance.

First, scrape off the paint seal from the window stop using a utility knife. Remove the staff bead, then pull out the upper sash and remove any cords or chains. Store the hardware in a bag with an identification label.

Sealing

Sash windows are beautiful in older structures, but they require care. They are susceptible to 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 increase energy efficiency.

The gaps between the sash and frame are the main source of draughts. They can also trigger noise reduction and rattling. Sealing beads, special products, and secondary glazing may all be used to reduce the air leakage inside the sash.

A gap between the top or bottom of the sash and the jamb frame is an issue that is common. This can lead to moisture leaking in, rotting wood and the growth of mold. The gap can be closed with silicone or polyurethane caulking 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 a type of bronze that are stapled or nailed to the edges of the lower sash to stop sideways rattle, and they can be purchased at DIY stores. Weatherstripping made of tubular vinyl can also be used, however it tends to rip and can alter the appearance of your window.

When installing replacement runners for sash, it is important to measure the entire width of the window opening. It is recommended to measure from the top of the sash to the horizontal line of the meeting rail, and from the bottom of the sash to the sill. These measurements can be transferred to new runners which will ensure the best fit and function of the window.

In older structures the gap between frame and sash is typically greater around the leading edge. It can be draught-proofed using strips of V-strip that is self-adhesive. However it is crucial to take this into consideration when cutting and measuring material.

A piece of material should be cut to the height of the sash, and with an additional inch each side to allow for movement. It should be trimmed square and placed in a way that the ends are aligned to the angle of the window sill. Use stainless steel screws as brass can rust. Also, make sure you use high-quality silicone or polyurethane glue.

Refurbishment

The sash is a beautiful historic feature in many homes. These windows are beautiful, but they can be susceptible to problems. The most frequent issues are rattling, stuck or double glazing Repair Hayes draughty windows. Rotting frames and rails that connect them, as well as broken double glazing repairs New Malden glazing repair Hayes (repairmywindowsanddoors.co.Uk) bars, defective frames, or rotten weights can cause issues. If you are experiencing any of these issues, it is time to replace or repair your sash.

Refurbishment can be a more costly alternative than replacing the sash itself, but it will restore the look and function of your sash window to as good if not superior to its original state. Refurbishment involves the lining of the meeting rail as well as the sash box using traditional putty, and then repairing any damage caused by the rot. Re-painting of the timber frame is also included, as is 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). In addition, it is recommended to install brush pile weather strips to lessen rattle and increase insulation.

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

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

It's important to decide whether to replace or repair windows that are damaged, as each option will require a different degree and amount of knowledge. For example the case of a sash windows that has a significant piece of glass missing, replacement is the best option. However when the glass has been damaged in a small area or a sill has begun rotting then a repair will be more appropriate.

Replacement

Many homeowners want to keep their old sash window in good condition, but deterioration will eventually cause problems such as rattles or draughts. Broken glass can also occur. This is why replacing them is often the only solution to these issues. But there are ways to improve the sash windows, beyond simply replacing them, such as installing draughtproofing and secondary glazing.

It is important to determine the severity of the issue, as it may not be feasible to replace a complete window. For instance, a fogging glass issue usually occurs within the sash and is usually able to be resolved without having to tear out the entire frame. A leaky seal can be fixed by making a few minor adjustments instead of a costly full-frame tear-out and replacement.

Sash windows are quite complex in design and feature many moving parts. It can be a challenge to fix common issues like broken panes or sash cables that have snapped. The solution to these issues typically involves dismantling the window frame, which isn't something most homeowners would want to take on themselves. 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 the latest energy standards. This can include reconditioning frames and fitting secondary glass to prevent heat from getting out of the window. You can also install a brush-pile strip in order to minimize drafts and prevent the window from squealing.

To start a repair project take out the window stops (the moldings on the 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. Store the hardware in a safe location. Use a heat gun to soften the old, hardened filler or putty. Scrape it off using a putty blade. Reassemble the window, reconnect the hardware and lubricate pulley axles by using silicone or Teflon spray. Reinstall the parting bead, and reinstall upper sash.

Repair

The choice to replace or repair the sash window is an important one for homeowners. Modern replacements have many benefits however, the original features of an older home can provide the character and value. They are also less expensive to repair rather than replace. Maintaining them in good shape can also lower the energy cost. Sash windows are prone to drafts, rattles, and condensation. These issues can lead to higher cost of energy and damage to the frame and sash.

Sash windows can be a challenge to open and close. The mechanism that slides can become sloppy or even draughty. Repairing a sash window involves extensive removal of the window frame, so it's best left to the professionals. With the right tools and experience it's possible to fix old windows with sash yourself. Adam shows Jess how to start:

Getting the window to come apart begins with the removal of any security fittings that are in front of the lower sash. Then, you can remove the staff bead. Finally, pull out the sash at the bottom. Remove the cords and chains from both sides, and knot them in such a way that they won't be pulled back by the weights. It's time to remove the upper sash. Unscrew the sash stoppers (a thin vertical strip of wood that supports the sash) and loosen any paint-encrusted hardware. The sash should be pulled back to reveal the weight. It is a large iron or lead cylinder that is concealed in a cavity, and held by an elastic cord. To prevent the sash from falling into the void pierce it with a nail and sacrifice the weight.

After the sashes are removed clean the jambs as well as the rails that meet. Remove the glazing bars and the cords for the sash. Then, using a utility blade, remove any paint from the sash stop. After the sashes have been put back in place, you can reattach the stops using nails that are not too large to risk puncturing the balancing weight.

To reassemble the sash put the top sash into its track first, and Double Glazing Repair Hayes then the lower sash. Make sure the sash stops are in the correct alignment with the frame, and then reattach the parting beads if needed. Reattach the sash chains or cords and attach the sash pulleys.