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Underlayment is the barrier between the concrete floor and the hardwood flooring. Adding this barrier is a vital step when installing hardwood over concrete, and it’s essential for protecting the wood from moisture coming from the concrete. Some adhesives are also manufactured to contain a moisture barrier that can protect hardwood from moisture, even if it’s glued directly to the concrete.

Thicker concrete is less likely to crack due to extreme weather changes. At a minimum, concrete slabs should be at least 4 inches, but if you’re worried about the concrete cracking under the weight of heavy machinery or from the freeze-thaw patterns of your climate, you should use even thicker concrete. A professional concrete company near you will be able to advise on the best thickness for your climate and use case.

In most cases, the cost to pour a concrete patio falls between $8 and $12 per square foot. For a typical 200-square-foot concrete patio, you’re looking at an average price of between $1,600 and $2,400. Most concrete patios will be 4 inches thick, so thickness plays a minimal role in the price variance, but some types of concrete finishes can cost up to $25 per square foot, which has a major impact on your total.

If the moisture level in your concrete flooring is higher than what is acceptable for your primer or flooring materials, then you are looking at dealing with major flooring issues down the road. From mold and mildew, to warping, buckling, bubbling, and soft spots, you could see a wide range of moisture-induced problems.

These issues can affect not just your flooring but your foundation too. That is why measuring moisture in concrete is so important before starting a project.