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Sash Windows Repair and Replacement

Older sash windows can be plagued by a variety of issues, including draughts rattles, and inadequate insulation. With a little attention, they can be restored to their original performance.

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

Sealing

Sash windows are beautiful in old buildings but they do need maintenance and are susceptible to issues like wet rot, cracked putty and drafts. Sealing, replacement or repair of the sash window is an effective way to reduce these problems and improve energy efficiency.

The gaps between sash and frame are the primary source of draughts. They can also cause noise and rattling, which can reduce soundproofing. Sealing beads, special products and secondary glazing can be used to limit the air leakage in a Sash.

A common problem is a gap between the top of the sash and the jamb frame, or between the bottom of the sash and the sill. This can cause water leaking into the wood and rotting of the wood, and mould growth. Seal the gap with silicone, polyurethane, or foam sealant.

Installing new sash runner or spring bronze might be necessary if a gap prevents the windows from closing and opening 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. They can be purchased from DIY stores. Tubular weather-stripping made of vinyl is a different option but it has a tendency to tear, and can detract from the appearance of windows.

When replacing sash runners, it is important to measure the window opening. It is recommended to take measurements from the top of sash up to the horizontal line on the rail that connects them and from the bottom sash down to the sill. These measurements can be transferred to the new runners, which will ensure a good fit and a better performance of the window.

In older buildings, there is a wider gap between the sash as well as the frame around the leading edge. It is possible to draught proof by a self-adhesive Vstrip, however it is important to consider this when cutting and measuring the material.

A piece of material should be cut to the width of the sash, with an additional inch each side to allow to allow for movement. It should be cut squarely and placed in accordance with the angle of the sill. It is also essential to make use of stainless steel screws as brass can rust, and the best quality silicone or polyurethane adhesive.

Refurbishment

The windows with sash are a stunning and historic feature of many homes. These windows are beautiful, Sash Windows Repair but they can be prone to problems. Common issues include rattling stickiness or draughts. The rotted frames and the rails that meet, as along with broken glazing bars, defective frames, or rotten weights are all causes of problems. If you experience any of these problems it's time to replace or repair your sash.

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. Refurbishment involves lining both the meeting rail and the sash box using traditional putty and fixing any damage caused by the 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). It is also recommended to install brush pile weather strip to prevent rattling.

If a new sash is required it can be constructed from similar designs to the old frame and maintain the character of your house. This is especially important for listed properties where any changes made to the windows will require planning permission.

Compare the metal tabs on the new window with the old sash before installing it (see below). If the tabs are different shapes, the new sash won't fit correctly into the slots of the window frame.

If a window has been damaged, it is crucial to decide between repair or replacement because each type of work will involve a different level of expertise and expense. If a large portion of the glass in a sash is missing replacing it would be an alternative. However, if the glass has been damaged in one small section or a sill has been damaged, a repair would be more appropriate.

Replacement

Many homeowners would like to keep their old sash window in good condition, however it is inevitable that deterioration will cause problems such as rattles or draughts. Broken glass can also occur. This is why it's often the only solution to these problems. But there are ways to improve the sash windows beyond just replacing them, including installing draught proofing as well as secondary glazing.

It's important to consider the severity of the issue, since it might not be appropriate or even feasible to replace a complete window. For instance, a foggy glass issue usually occurs in the sash itself and can usually be solved without ripping out the whole frame. It is typically possible to repair a weak seal with a few simple solutions, rather than cutting out the entire frame and replacing it.

Sash windows are quite complicated in their design and come with a lot of moving parts. This is why it can be a challenge to fix common issues like sash cords that are snapped or broken panes. Most homeowners don't want to remove the window frame to fix the issues. This is why many choose to work with an expert.

Specialists can restore sash window frames to their original glory or update them to meet the latest energy standards. This may include reconditioning the frames and installing secondary glass to prevent heat from escaping through the window. You can also add an edge strip for brush-piles to cut down on drafts and prevent the window from shaking.

To begin a repair, remove the window stops. (The moldings are located in front of the lower glass). Next, remove the staff bead and pull out the lower sash. Remove the chains or cords that are on both sides. Finally remove the sashweights from the bottom weight cavity. Place the hardware in a secure place. Heat gun to soften hardened filler or putty. Scrape it away with 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 then reinstall the upper sash.

Repair

It is crucial for the homeowner to make a decision on whether to repair or replace their sash windows. Although modern replacements offer many advantages, the original features of an older house provide personality and value to the property and are often cheaper to repair than replacing them. Maintaining them in good condition can also reduce the cost of energy. Sash windows are prone to rattles, drafts, and condensation. These problems can result in increased energy bills and damage to the frame and sash.

Sash windows are notoriously difficult to close and open and the standard sliding mechanism can be displaced from its track or become draughty. Repairing a sash window glass repairs involves extensive dismantling of the frame of the window and should be left to a professional. With the right tools and skills, it is possible for you to repair the old sash window yourself. Adam shows Jess how to start:

Making the window come apart starts by removing any security fittings that are in front of the lower sash. Next, remove the staff bead, then remove the bottom sash. Remove the cords and chains from both sides, and knot them in a way that they can't be pulled back by the weights. The next step is to remove the upper sash. Take out the sash stops and a thin wood strip that holds the sash. Also, take off any hardware that has been painted. Pull the sash back to reveal the weight. It is a heavy iron or lead cylinder that is hidden in a cavity, and secured by an elastic cord. To prevent the sash from falling into the void make a hole in it using 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 cords for the sash. Then employing a utility blade take off any paint that is on the sash stop. Once the sashes are back in place, reattach the stops using nails that are small enough to avoid puncturing the balancing weight.

Reassemble the sash by inserting the upper sash first into its track, followed by the lower sash. Verify that the sash stoppers and the frame are aligned properly. If necessary, reattach any beads used for parting. Finally, reattach the sash chain or cords and then re-attach the axles of the sash pulleys.