A floating floor installation is one where the planks are attached to each other instead of to the subfloor over which it is being laid. It is a fast, relatively easy method of fixing which allows some room for movement and expansion given changes in humidity; the floor can be removed easily too, making it ideal for commercial applications where the flooring is more likely to be changed within the foreseeable future. Floating installations are usually associated with the fitting of engineered timber floors but, in fact, solid timber boards can also be laid floating over a suitable subfloor providing a damp-proof membrane is laid and Elastilon employed.