Most people attribute water problems and timber floors with flooding. Whilst this is a cause of concern it is not the major problem.
It has been found that 90 % of problems associated with timber overlaid floors are caused by moisture coming from beneath. Rising damp and or uncured concrete being the major contributor.
Most overlaid floors are made to go over existing flooring. They are non structural and rely on being either stuck directly to the substrate or are laid floating.
In either case it is imperative that the substrate be adequately sealed or covered to avoid moisture penetrating the flooring given as the core or substrate used in the manufacture of most overlaid floors are made from soft woods or MDF. In both instances these substrates swell when moisture is present.
an example of a standard engineered timber floor water damage caused from water getting under the floor - cause a leaky dishwasher
The sealing of sub floors is expensive, time consuming and requires care and attention to detail. Uncured concrete is a real problem and timber floors should never be laid over uncured concrete unless the concrete is again adequately sealed.
The advent of floating floors has helped in reducing laying costs due to the use of moisture proof underlay. The negative factor is the drumming effect when the floor is walked on and the moisture barrier is of little use in the case of flooding or excessive water. This tends to enter between the floor and the underlay resulting in swelling and buckling.
Hydrawood has been developed to resist this problem by developing and inventing a substrate that will not expand or shrink when subjected to moisture but will also accept without swelling a range of real timber top layers.
This technology has enabled timber flooring to now be used in problem areas where moisture has been seen to be a problem and also has the advantage of being glued directly to the floor eliminating the hollow sound associated with floating floors.