Its walls have a painted timber picture rail fixed at . A timber picture rail is also located within the office. Internally almost every room of the house was wall-papered to the picture rail. The walls are of over-painted brick and there is also timber picture rail. Internally, the Green House is lined in tongue-in-groove timber panelling, with a picture rail. There is a plain, non-original picture rail in the south-eastern and centre southern bedrooms.