When you hear sash windows or even see one, you think oh that's a window that slides open from the top or the bottom and that's it, however they are far more than just one style of sash window, there are curved tops, different styles of glazing bars, as well as different types of glazing and we didn't even get to the varying size of frame, sash mechanisms and window furniture.
I would go so far as to say that no two houses are exactly the same, so many houses are built in different era's in London with different window sizes and frames. Its not surprising that windows need to be made to measure. The glass choices on their own when matched with glazing bar configurations can leave you with a dizzying level of choice to make.
Its important that a professional joinery manufacturer is chosen to make your wooden box sash windows, the timber choice is also such an important part of the craft of the sash window, it can determine the life of the window.
A sash window is not going to last if it is not installed professionally so there are no gaps to allow water ingress, as well as a professional job of the painting and finishing, making sure to keep it maintained will also be important if you want to maximise the life of the window.
