10/09/2026
The KSA recently sent out an industry advisory to our members regarding the dangers of installing cabinetry when a site is not dry.
It is NEVER best practice to install cabinetry when the walls may be damp or when walls have not been plastered and sealed with at least a primer, and floors have not been screeded. Any and all cabinetry installed under these circumstances is at very high risk of moisture damage.
It is the builder’s responsibility to have a building / masonry grade industrial moisture meter so that it can be determined if the walls are dry enough for installation. If there are any queries the builder must be able to show the cabinet maker that the measure reflects a maximum of 12-15% moisture (this is the international best practice percentage). If the measure reflects more than this the cabinetmaker should be able to refuse to install without penalty. If forced to install the builder should sign a waiver absolving the cabinet maker of any liability should the cabinetry suffer moisture damage in the future.
There is no prescribed industry standard when it comes to backing boards on cabinetry. Cabinet makers are free to determine their own best practice in this regard and it varies from company to company. Many cabinetmakers do not add a backing board when building cabinetry for developments in order to work withing the PC amount prescribed by the builder. For those who do add a backing board it was often Masonite and is now often 3mm single faced MDF. While adding a backing board to the cabinetry can assist in slowing down the process of moisture reaching the melamine carcassing it will not stop it. You will however normally see the impact of the moisture on the backing board first.
Many cabinet / kitchen manufacturers only edge the seen sides of carcassing. When installing without a backing board it is our recommendation that the unseen sides facing the wall are either edged or sealed with a liquid sealant before installation to afford a little extra protection.