A frequently asked question about fitted wardrobes is whether they should have backs on them or whether they should just be front frames with the walls and ceiling forming the interior.

If the wardrobes are entirely on internal walls then there may be a case for not having backs if you are desperate for every cubic inch of storage or because the room is so narrow that you need to restrict the wardrobe depth to 550 mm.  The cost saving is marginal and you will not get the feel of a proper piece of fitted furniture whenever you open the doors.

However, if even one end of the wardrobes is on an external wall think very carefully about the condensation risk. On a winter morning you open your wardrobe doors and let in a flow of centrally heated air that comes into contact with the cool external wall, you close the doors and trap that warm, moist air inside the wardrobe and it spends the next ten hours cooling and precipitating its moisture content onto the walls.  Much later you open your wardrobe again and let in another batch of warm air to repeat the process through the night.  Don’t be surprised if your clothes start to smell of damp and begin to grow a patina of black mould.

Fitted wardrobes on external walls must have backs on them and a free air space between the backs and the walls.  Ideally, the back should be of 18mm thick laminated chipboard or MDF.  Otherwise, what you saved by cutting corners on the wardrobes will be spent on dry cleaning or replacing your precious clothes.