Yes, both solid bamboo flooring and engineered bamboo flooring can be floated over an underlay. Floating a floor, which is sometimes also referred to as being ‘loose laid’, is one of the quickest and easiest methods of installation.
When a floor is ‘floated’ it means that it has been installed without being glued, nailed or screwed to the subfloor. The planks of flooring are fitted together and attached to each other but do not need to be fixed into place as they are laid over an underlay.
Bamboo flooring is available with two main fitting system – tongue and groove and a click system. Tongue and groove planks should be glued together and planks with a click fitting system are simply clicked and locked together. Both methods of installation provide a tight and secure fit which ensures the bamboo floor is smooth and gap free. 
When installing any bamboo floor it is essential that the subfloor is checked and well prepared. It must be flat, level and dry before floating a bamboo floor over an underlay. There are various types of underlay that can be used, including sound proofing underlays, thermal barriers and special low tog underlays that can be used with an underfloor heating system.
