Sash Windows Repair and Replacement
Sash windows that are older than 20 years can have many issues such as rattles and draughts. They might also be poorly insulation. A little bit of care can often restore them to their original performance.
First, scrape off the paint seal from the window stop with an utility knife. Remove the staff bead, then pull out the upper sash, and remove any cords or chains. Store the hardware in a container with a label.
Sealing
Sash windows look stunning in older buildings, however they require regular maintenance. They are susceptible to problems like wet-rot cracked putty, and draughts. Repair, sealing, or replacement of the sash window is an effective method to eliminate these issues and improve energy efficiency.
Draughts are mostly caused by gaps between the sash and frame. They can also trigger rattling and reduced sound-proofing. Sealing beads, specialist products and secondary glazing can all be used to reduce the air leakage inside the sash.
A common problem is a gap that exists between the top of the sash and the jamb frame, or between the bottom of sash and the sill. This can cause the leaking of moisture, rotting of the wood, and mould growth. The gap can be sealed with caulking made of polyurethane or silicone or foam sealant.
Installing a new sash runner, or spring bronze may be necessary if a gap prevents the windows from opening and shutting smoothly. These are a type of bronze that are stapled or nailed to the edges of the lower sash in order to prevent sideways rattle, and they can be purchased at DIY stores. Tubular vinyl weatherstripping can also be used, but it is more likely to tear and can detract the appearance of your window.
When installing replacement sash runners it is essential to measure the window opening. It is best to measure from the top of the sash to the horizontal line 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 help ensure a perfect fitting and better operation of the window.
In older structures, the gap between frame and sash is typically wider around the leading edge. It can be draught-proofed by using a strip of V-strip that is self-adhesive. However, it is important to take this into consideration when measuring and cutting the material.
The strip should be cut to the height of the sash with an inch added on each side to allow for movement. The strip should be cut to a square shape and then positioned so that the ends are matched to the angle of the window sill. Use stainless steel screws as brass may be rusty. Also, make sure to use the highest quality polyurethane or silicone glue.
Refurbishment
The Sash window is a beautiful and historic feature of many homes. However, despite their beauty these windows are susceptible to a myriad of issues. Rattling, draughts, sticking or leaks are all common problems. Rotting frames and rails that meet, as well as broken glazing bars, defective frames, or rotten weights are all causes of problems. When these issues arise, it's time to consider a sash repair or replacement.
Refurbishment may be more expensive than replacing the sash but can restore your sash's look and function to the same level as its original state. It involves lining the meeting rail and sash boxes with traditional putty and repairing any rot-related damage. Re-painting the frame of the timber is also included, as is 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 strip to minimize rattling.
If a replacement sash needed it can be constructed using the same design to match your old frame. This will maintain the style and character of your house. This is particularly important for buildings that are listed, as any modifications to windows require planning permission.
Compare the metal tabs of the new window to the old sash prior installing it (see below). If they're different shapes, the new sash won't fit properly into the window frame slots.
If a window is damaged, it is essential to decide between repair or replacement because each type of work will involve a different level of expertise and expense. If a significant portion of the glass in a sash is missing replacing it would be the better alternative. If the glass is damaged in a small region or a sill is rotting and needs to be repaired, then a repair will 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. This is why replacing sash windows is often the only option to solve these issues. But there are ways to improve the sash windows beyond just replacing them, such as installing draughtproofing and secondary glazing.
Consider the extent of the issue. It may not be necessary or appropriate to replace windows. For instance, a foggy glass issue is usually a problem within the sash and is usually able to be resolved without tearing out the entire frame. It is usually possible to fix a weak seal with a few simple fixes, rather than ripping out the entire frame and replacing it.
Sash windows have a complex design that has many moving parts. It can be challenging to fix common problems like cracked panes or snapped sash cable. Resolving these issues often requires dismantling the window frame, which isn't something most homeowners want to take on themselves. Many homeowners decide to engage a professional for these reasons.
Specialists can restore sash window frames back to their original splendor or make them more up-to-date with the latest energy standards. This can include reconditioning frames and installing secondary glass to block heat from getting out of the window. You can also install an edge strip for brush-piles to cut down on drafts and stop the window from squealing.
To begin a repair project start by removing the window stops (the moldings on the front of the lower sash). Next, remove the staff bead, then remove the lower sash. Remove the chains or cords that are on both sides. Finally remove the sashweights from the bottom weight cavity. Keep the hardware in a safe place. Soften any old, hardened putty or filler with a heat gun and scrape it away with a putty knife. Reassemble the window, attach the hardware and then lubricate the pulley axles with silicone or Teflon spray. Reinstall the parting beads and reinstall the upper sash.
Repair
It is important for homeowners to make a decision on whether to replace or repair their sash windows. Modern replacements have many benefits, but the original features of an older home can add authenticity and value. They are also cheaper to repair than replacing. Maintaining them in good shape can lower the energy cost. Sash windows are susceptible to drafts and rattles. This could result in higher energy bills and damage the frame and sash.
Sash windows can be a challenge to open and close. The mechanism for sliding could become dislodged or become draughty. Repairing a sash windows requires extensive dismantling of the frame of the window, so it's best left to a professional. But, with the right tools and experience it is possible to fix old sash windows yourself. Adam shows Jess how to get started:
The process of bringing the window apart begins with the removal of any security fittings on the front of the lower sash. Then, take off the staff bead. Then, remove the sash at the bottom. Remove the chains and cords from both sides, and tie them so that they cannot be pulled back by the weights attached. Caterham double glazing repair is to take out the upper sash. Unscrew the sash stoppers (a thin vertical strip of wood that supports the sash) and then loosen any painted-covered hardware. Pull the sash to reveal the balancing weight, that is a massive iron cylinder that is encased inside a hidden compartment and anchored by rope. To stop the sash falling into the void pierce it with an hammer and then sacrifice the weight.
Once the sashes are free clean the jamb and rails that meet, remove the glazing cords and sash bars, and scrape off any paint from the sash stops using the help of a utility knife. Once the sashes are returned to their original positions, you can attach the stops using nails that are small enough to avoid damaging the weight that is balancing.
Reassemble the sash by placing the upper sash first into its track, followed by the lower sash. Make sure the sash stops are in the correct alignment with the frame, and then reattach the beads for parting if necessary. Then, reconnect the sash chain or cords and re-install the axles of the sash pulleys.