Sash Windows Repair and Replacement

Older sash windows can suffer from a range of problems including draughts, rattles, and poor insulation. With a little effort, they can be restored to a higher level of performance.

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

Sealing

Sash windows can look stunning in older buildings, but they do need maintenance and can be subject to issues such as cracked putty, wet rot, and draughts. It is possible to decrease energy loss and increase the efficiency of sash windows by replacing, repairing or sealing them.

Draughts are usually caused by gaps between the sash and Sash Windows Repair the frame. They can also trigger noise reduction and rattling. Various methods can be used to stop air leaks from the sash Window repairs, such as sealing beads, specialist products, and secondary glazing.

A gap between the top or bottom of the sash and the jamb frame, is an issue that is common. This can result in the leaking of moisture and rotting of the wood and the growth of mould. Seal the gaps with silicone, polyurethane or foam sealant.

If a gap is preventing windows from opening and closing smoothly, it may be necessary to replace sash runners or spring bronze. These bronze strips are attached by staples or nails to the lower sash edges in order to stop sideways rattling. They can be bought at DIY stores. Tubular vinyl weather-stripping is an alternative option however it is prone to rip, and it can affect the appearance of windows.

It is crucial to measure the entire window opening before installing an alternative sash runner. It is best to take measurements 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 the new runners, which will ensure a good fit and a better performance of the window.

In older buildings the gap between the 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 important to consider this when measuring and cutting the material.

The strip should be cut at the top of the sash with an inch extra on each side to allow for movement. The strip should be cut to a square shape and then positioned in a way that the ends are matched to the angle of the window sill. Use stainless steel screws since brass will rust. Also, make sure to use the highest quality polyurethane or silicone glue.

Refurbishment

The sash is a beautiful historic feature in many homes. They are beautiful but they can also be susceptible to problems. Draughts, rattling or leaking are typical issues. The rotted frames and the rails that connect them, as and broken glazing bars, damaged weights or rotten frames are all causes of problems. When these problems occur it's time for repairs or replacements to your sash.

Refurbishment may be more expensive than replacing the sash however, it can restore the appearance and function to the same standard that it was in its original form. It involves re-lining the meeting rail and sash boxes with traditional putty, and then repairing any rot damage. It also involves painting the frame of timber and re-glazing with traditional glass. A full refurbishment can also include adding draught proofing, Sash Windows Repair re-attaching the sash furniture/ironmongery and replacing the parting bead (the dividing strip between the two panes of glass). It's also recommended to install brush pile weather strip to reduce rattling.

If you require a new sash the frame can be constructed from like-for-like designs to match the old frame and maintain your property's heritage style. This is especially important for listed buildings where any changes to the windows will require planning permission.

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