Before you coat concrete, especially with horizontal surfaces, you must conduct a concrete floor moisture test. Concrete slabs appear to be hard and solid, yet in reality, concrete is porous and moist stuff. Concrete is a reasonably universal material for construction projects. In most offices and homes, concrete is used for subfloors and foundations, plenty of buildings even use concrete for major load-bearing walls. With concrete being a usual building material, professionals in the restoration, construction, and home inspection industries all need to detect moisture accurately in the concrete.
Some companies provide so-called concrete moisture meters, that can provide a qualitative, surface-level reading of concrete moisture. Yet, these concrete moisture meters do not give exact, quantitative measurements of moisture in the concrete. Concrete is mixed and slabs are set with more water compared to what will be needed for the hydration of the cement.
Understand why it is vital to test concrete for moisture
While concrete usually appears hard and dry, it’s full of moisture, as it begins as a liquid. Moisture even after it hardens can still pass through the concrete for years, which can affect your floors. Construction firms understand this well, they are doing regular moisture testing on the concrete slabs to know the flooring material and best sealer that they will use. Remember that the moisture level of concretes varies from each property depending on the created concrete mix.
Normally, accurate moisture testing is done with a calcium chloride kit or a humidity meter. Both methods can create the exact level of moisture that is present in concrete. That aid to identify the best products for the flooring layer. Homeowners may also like to know the moisture level of their concretes even without special tools.
Check this procedure on how to know the moisture level of concrete
Cut a plastic sheet into 24×24 inch squares and place them securely to the concrete using duct tape or any waterproof tape. All sides should be taped thus that any moisture won’t escape. For two days, leave the plastics and check them after.
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If there is any moisture in the plastics, either in the form of fogginess or water droplets. Your concrete slabs then have a significant amount of moisture inside. This explains why your flooring gets damaged easily and unevenly.
Concrete sealers are made to protect concrete slabs from corrosion, damage, and staining. Once your garage is made from concrete, you may put some sealer on it so it won’t get damaged. These sealers can block holes in the concrete, which lessens the absorption of salt and water that causes damage to the surface. Even if the concrete sealers can impede holes, a series of precise moisture tests still be done to know the appropriate variation for your concrete slabs.
