Floor covering manufacturers whether producers of tile wood carpet or high performance floor coatings publish the maximum allowable moisture content of the concrete over which their flooring products can be installed based on results of various astm.
Floor tile moisture barrier.
Nance carpet and rug versapad 180 sq.
The sheet membranes like ditra provide better waterproofing and isolation to prevent cracks which are important in areas with a lot of moisture like showers or slabs with cracks.
Acoustical underlayment w vapor barrier for luxury vinyl flooring 54 pack model qwlv100 2 430 00.
However moisture levels can and do fluctuate over time so your sub floor moisture measurements may give you a false sense of security.
X 1 5 mm premium silent underlayment for vinyl plank laminate hardwood and tile model 22491 125 00.
In this case there is less breathability to encourage evaporation which ultimately could cause mold growth.
It is possible there was a vapor barrier and it deteriorated over time.
Floor muffler padding underlayment has the highest and most effective sound barrier for floating floors along with superior moisture blocking technology.
Seal the floor either chemically or via membranes this creates an impermeable barrier between the sub floor and your flooring which means moisture cannot penetrate into your flooring.
This underlayment is not only strong and flexible but is light as well making it easier for the installer to take up and down wherever it is needed.
Much cheaper and easier to use than sheet style barriers.
Either way if you are going to install a moisture sensitive tile over a slab without a vapor barrier there is a risk that the floor has high moisture content either continuously or after rain events.
Greatmats also offers a completely waterproof carpet basement flooring tiles with a built in vapor barrier with a raised base and waterproof carpet top made of recycled materials.
The majority of commercial and industrial buildings are constructed with a concrete substrate laid over prepared soil called slab on grade.