Sash Windows Repair and Replacement
Sash windows older than 20 years can have a variety of problems, including draughts and rattles. They may also be poorly constructed to be insulated. A little care can often restore them to a high standard of performance.
First, remove the paint seal using an utility knife. Then, remove the staff bead, then take the upper sash out by removing cords or chains and storing hardware in a bag marked.
Sealing
Sash windows can look stunning in old buildings, however they require maintenance and can be subject to problems like cracked putty, wet rot, and drafts. It is possible to reduce energy loss and increase the efficiency of windows made of sash by replacing, repairing or sealing them.
Draughts are mainly caused by gaps between the sash and the frame. They can also cause noise reduction and rattle. Different methods can be employed to stop air leaks from a sash window, including sealing beads, special products and secondary glazing.
A gap between the top or bottom of the sash, and the jamb frame is an issue that is frequent. This could cause moisture to leak in, rotting wood, and mold growth. The gap can be sealed with silicone or polyurethane caulking or foam sealant.
Installing a new sash runner, or spring bronze could be necessary in the event that a gap blocks the windows from closing and opening effortlessly. These strips of bronze are tied or stapled to the lower sash edges in order to stop the rattling of the sides. They can be bought at DIY stores. Tubular vinyl weatherstripping can also be used, however it is prone to tear and can alter the appearance of your window.
When installing replacement sash runners It is crucial to measure the entire width of the window opening. It is best to measure from the top of the sash to the horizontal centerline of the rails that meet, and from the bottom of the sash down 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, there is a wider gap between the sash and frame on the leading edge. It can be draught-proofed by using a strip of V-strip that is self-adhesive. However it is crucial to take this into consideration when cutting and measuring material.
The strip should be cut at the height of the sash with an inch extra on each side to allow movement. It should be trimmed squarely and positioned to match the angle of the sill. Use stainless steel screws as brass can be rusty. Also, make sure to use a high quality silicone or polyurethane glue.
Refurbishment
The windows with sash are a stunning, historic feature of many homes. However, despite their beauty these windows are susceptible to a myriad of issues. Rattling, draughts, sticking or leaking are typical issues. And rotting frames and connecting rails, broken glazing bars or faulty weights can create a mess. If you experience any of these issues, it is time to replace or repair your sash.
Refurbishment is more expensive option than simply replacing the sash itself but it can improve the appearance and functionality of your sash window the same or better than the original condition. It involves re-lining the meeting rail and sash box with traditional putty and fixing any damage caused by rot. It also includes re-painting the timber frame 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). In addition, it is recommended to install brush pile weather strips in order to minimize rattle and increase insulation.
If you require a new sash the frame can be constructed from similar designs to the frame that was previously used and keep your property's heritage style. This is especially important for buildings that are listed, as any modifications to windows will require planning permission.
Compare the metal tabs on the new window with those of the old sash prior to installing it (see below). If they're different sizes, the new sash will not fit inside the slots of the window frame.
It is important to decide if you want to repair or replace the damaged window, since each option will require a different degree and cost of expertise. If a large part of the glass in a sash is missing then replacing it will be a better option. But in the event that the glass is damaged in one small section or a sill is damaged, a repair would be the better option.
Replacement
Many homeowners wish to keep their old sash window in good condition, but the deterioration of the window will eventually cause issues like draughts or rattles. Broken glass may also occur. These issues usually suggest replacement as the only feasible solution. However, there are ways to improve the sash windows that go beyond replacing them, such as installing draughtproofing and secondary glazing.
Think about the scope of the issue. It might not be necessary or appropriate to replace the window. For example, a foggy glass issue is usually a problem within the sash itself and is usually able to be resolved without ripping out the whole frame. A leaky seal can often be remedied by a few easy fixes instead of a costly full frame tear-out and replacement.
Sash windows have a complex design with a lot of moving parts. This is why it can be a challenge to remedy some common problems, like snapped sash cords or broken panes. Solving these issues usually requires taking apart the window frame, which isn't something the majority of homeowners would like to tackle on their own. Many homeowners choose to work with a professional due to these reasons.
A professional can help restore windows with sash to their original splendor, or even bring them up to the latest energy standards. This can include reconditioning the frames and fitting secondary glazing, which will stop heat out of the window. It is also possible to add a brush-pile strip in order to minimize drafts and stop the window from rattling.
To start a repair project take out the window stops (the moldings on the front of the lower sash). Then loosen the staff and pull out the lower window sash. Remove the chains and cords from both sides. Finally, disconnect the sash weights and the bottom of the cavity and remove them. Keep the hardware in a safe location. Heat gun to soften old, hardened filler or putty. Scrape it off with a putty blade. Reassemble the window, reconnect the hardware and lubricate the pulley axles using silicone or Teflon spray. Install the parting beads and reinstall upper sash.
Repair
It is important for homeowners to make a choice on whether to replace or repair their sash windows. Modern replacements are beneficial in many ways however, the original features of an older home can provide authenticity and value. They are also less expensive to repair instead of replacing. Maintaining them in good shape can reduce energy costs. Sash windows can be prone to drafts and rattles. This could result in higher energy bills and damage the frame and sash.
Sash windows are notoriously difficult to open and close as the traditional sliding mechanism can be displaced from its track or draughty. Repairing a sash windows requires extensive dismantling of the frame of the window and is best left to a professional. With the right tools and skills it is possible to fix an old sash window yourself. Adam shows Jess how to get started:
Remove any security fittings behind the lower window sash. Next, remove the staff bead, then remove the bottom sash. Take the chains and cords from both sides, and knot them in a way that they can't be pulled back by the weights attached. It's time to remove the upper sash. Unscrew the sash stops (a thin vertical strip of wood that supports the sash) and loosen any painted-covered hardware. Unscrew the sash to reveal the balancing weight, that is a massive lead or iron cylinder enclosed in a hidden cavity and secured by a rope. To stop the sash from falling into the void, you must pierce it using a nail, and sacrifice the weight.
After the sashes have been removed clean the jambs as well as meet rails. 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. Reattach the stops when the sashes are reinstalled. Use window repair that are not large enough to puncture the weight of the balancing.
Reassemble the sash by inserting the upper sash first into its track, followed by the lower sash. Check that the sash stops and the frame are aligned correctly. If needed, reconnect any parting beads. Reattach the sash cords or chains and attach the sash pulleys.