Sash Windows Repair and Replacement

Older sash windows may suffer from a range of issues, including draughts rattles, and poor insulation. A little care can often bring them back to their original performance.

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

Sealing

Sash windows look stunning in older buildings, however they require care. They can be affected by problems like wet-rot cracked putty, and draughts. Sealing, replacement or window repairs repair of the sash window is an effective way to reduce these problems and improve the efficiency of energy.

The gaps between sash frame are the primary source of draughts. They can also lead to rattles and reduce sound-proofing. Sealing beads, specialty products and secondary glazing can all be used to reduce the air leakage in the Sash.

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 mold growth. Seal the gap with silicone, polyurethane or foam sealant.

If a gap is preventing the windows from opening and closing easily, it could be necessary to replace sash runners or spring bronze. These are a type of bronze that are stapled or nailed into the edges of the lower sash to prevent 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 detract the appearance of your window.

It is essential to measure the entire window opening before installing replacement sash runner. It is best to measure from the top of the sash up to the horizontal centerline of the meeting rail, and from the bottom of the sash down to the sill. These measurements can be transferred to the new runners, which will help ensure a proper fitting and better operation of the window.

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

A strip should be cut to the length of the sash, and with an extra inch each side to allow for movement. It should be cut square and positioned in a way that the ends are matched to the angle of the window sill. Use stainless steel screws since brass may rust. Also, make sure to use a high quality polyurethane or silicone glue.

Refurbishment

The sash window is an elegant and historic feature of many homes. However, despite their beauty these windows are prone to a range of issues. The most frequent issues are rattling, stuck or draughty windows. Also, rotting frames, meeting rails, broken glazing bars or weights that are not working properly can cause a lot of trouble. If these issues occur, it's time for a sash repair or replacement.

Refurbishment is more costly than replacing the sash, however, it can bring back the appearance and function to the same level in its original condition. Refurbishment involves re-lining both the meeting rail and the sash box using traditional putty, and then repairing any damage caused by rot. 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). It is also recommended to install brush pile weather strips in order to minimize the rattling and increase insulation.

If you require a new sash the frame can be constructed using similar designs to the frame of the previous one and preserve the character of your house. This is especially crucial for listed buildings, where any changes to the windows require planning permission.

Before putting the new window on, it's best to check the metal tabs against those on the sash that was previously used (see below). If they are different shapes the new sash may not fit inside the window frame slots.

When a window is damaged it is essential to decide between repair or replacement, because each kind of work will require a different degree of expertise and expense. If a large part of the glass in a sash is missing, then replacing it will be an option. If the glass is only damaged in a small region or a sill is beginning to rot or rotting, then a repair could be better.

Replacement

Many homeowners wish to keep their old sash windows in good condition, however deterioration will eventually cause problems such as rattles or draughts. Broken glass may also occur. This is why replacing sash windows is often the only option to solve these issues. However, there are ways to improve sash windows beyond just replacing them, such as installing draught proofing and secondary glazing.

It's important to consider the extent of a issue, as it may not be practical to replace an entire window. Foggy glass, for example 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 a lot of moving parts. This is why it can be difficult to remedy some common problems such as snapped sash cords or broken panes. Many homeowners do not want to remove the window repairs [describes it] frame to repair these issues. Many homeowners choose to work with a professional due to these reasons.

Specialists can restore sash window frames back to their original splendor or make them more up-to-date with modern energy standards. This may include reconditioning the frames and installing secondary glass to prevent heat from getting out of the window repairs. You can also add a brush-pile strip in order to minimize drafts and prevent the window from shaking.

To start a repair project, remove the window stops (the moldings that are in front of the lower sash). Then, loosen the staff bead, then remove the lower sash. Remove the chains and cords from both sides. Finally, disconnect the sash weights from bottom of the weight cavity and take them off. Store the equipment in a secure location. Use a heat gun to soften the old, hardened filler or putty. Scrape it away with a blade made of putty. Reassemble the window. Reattach the hardware. Lubricate the pulleys with Teflon or silicone spray. Install the parting beads and reinstall the upper part of the sash.

Repair

The decision to repair or replace windows with sash is an important one for the homeowner. Modern replacements have many benefits however, the original features in an older home can add character and value. They are also less expensive to repair than replacing. Maintaining them in good condition will also help you save money on energy. Sash windows are susceptible to rattles, drafts, and condensation. These issues can lead to higher costs for energy and damage to the frame and the sash.

Sash windows can be a challenge to open and close. The mechanism for sliding could become dislodged or draughty. Repairing a sash window involves extensive removal of the frame of the window, so it's best left to professionals. But, with the right tools and experience it's possible to repair old windows using sash. Adam shows Jess the basics:

Remove any security fittings that are just in front of the lower window sash. Then, take off the staff bead. Finally, pull out the sash at the bottom. Remove the chains and cords from both sides, and tie them in such a way that they won't be pulled back by the weights. Now 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. Also, remove any hardware that has been painted. 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 held by an elastic cord. To prevent the sash from falling into the void, hit it with nails and remove the weight.

After the sashes have been removed, clean the jambs and the rails that meet. Remove the glazing bars as well as the sash cords. Then using a utility knife take off any paint from 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 puncturing the weight that is balancing.

Reassemble the sash by inserting the upper sash first on its track, then the lower sash. Make sure the sash stoppers are properly aligned with the frame, and then reattach the beads that separate if required. Then, reconnect the sash cords or chains and re-attach the axles for the sash pulleys.