If there are any mortars grouts or adhesives they must be removed and ground down to expose a clean section of concrete.
Epoxy floor moisture test.
There are two tests that are typically used one is a calcium chloride test astm f1860 11 standard and the other is an in situ relative humidity test astm f2170 11.
Plastic sheet moisture test.
The calcium chloride test is the only quantifiable test method which identifies the rate of moisture transmission within the concrete.
Testing moisture in concrete.
A third option a simple diy test can indicate the presence of excess moisture either on the slab surface or in the room s air but it cannot measure.
Only then can you test properly for moisture using the following test methods.
For those slabs with a pre existing floor covering an extra step is involved to test for moisture.
It is not however the best test if you are planning to put an epoxy coating on the floor.
Clean and dry the concrete floor.
Concrete is thick solid and hard.
Flooring manufacturers rate their products based on the moisture levels they can tolerate and testing your slab can tell you if a particular flooring material is likely to perform adequately.
It is necessary to test your concrete for moisture before applying any coat of paint or epoxy on it.
Follow the steps outlined below to perform a moisture test prior to an epoxy floor installation.
Sweep vacuum and dry the concrete floor with a shop vacuum to ensure it is emitting as little moisture as possible.
Ft then additional kits for every 2 000 3 000 sq.
You need to do an mvt or moisture vapor transmission test on your floor s surface prior to applying either epoxy or paint on it.
One way to eliminate epoxy floor coating failure is to test it before you coat it.
One test kit is normally used for the 1st 1 000 sq.
The floor covering must be removed.
Moisture testing per astm f 1869 calcium chloride test before installation of floor coverings on concrete substrates it is wise to test the rate of moisture vapor transmission mvt.
Avoid the problem by doing a simple moisture test to determine if the floor is right for an epoxy coating.
Are placed on various areas of your floor as a single test on a large area cannot accurately determine moisture levels.
This is a low cost low tech moisture test that can be useful for determining if you have moisture in a garage or basement floor.
Additionally moisture under the concrete slab causes pressure that forces the epoxy to separate from the concrete s surface often taking pieces of concrete with it.