This 1920s sash window is original to the house with the brickwork built around the window. Being North facing, it wasn’t getting much opportunity to dry out after rain so despite the owners diligent upkeep, this particular area of the window was suffering. During redecoration the previous year, the area had been treated with filler but unfortunately this had only served to further trap moisture inside the wood and accelerate the rot.
The timber available during the 20s was typically slow grown and therefore is much more rot resistant and stable than the equivalents we see today. It’s therefore a good idea where possible to retain as much of that original timber as we can. Here, we were able to localise the repair only to the corner of the sill and bottom area of the weight box planks using Accoya with a minimum rot resistance of 50 years.
To complete the repair and ensure a long life for the window, we made a small repair to the bottom sash which also needed a little TLC.
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