What goes under the laminate/engineered flooring?

Laminate is fitted as a "floating floor " it is not fixed down at all. In most cases engineered wood and solid bamboo floors are fitted as floating floors. The final feel of the floor is very much dependent on the subfloor it is fitted on. Uneven sub-floors will result in bouncy floors, and in most cases manufacturers have very strict guidelines on subfloor flatness. Underlay will to some extent level minor bumps and dips. In most cases the use of a vapour barrier is recommended to separate your very dry laminate/wood from any chance of moisture present in most subfloors. Some underlays have an integrated vapour barrier these are called combi underlays. Here are some of the laminate and engineered wood flooring underlay that are available : •White foam: If its any less than 3mm its pretty worthless. •B&Q Combilay: 3mm foam easy to use, just have to be careful working on it, as it tears easily , compromising the vapour barrier. •Barrier Plus. : 3mm foam combi underlay brilliant value ...  more