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Don’t Ignore the Importance of Moisture Mitigation

August 10, 2015 by PSI Americas 5 Comments

With today’s construction timelines on the fast track, it means there is far less time available for drying concrete slab foundations before primary construction begins. But rushing a concrete installation project potentially translates into higher than acceptable slab moisture levels for concrete slabs and flooring.

Additionally, if you want to meet manufacturer warranties, taking care of the humidity or RH levels is a must. That’s where moisture mitigation becomes a necessary skill on commercial job sites around the country.

Causes of Concrete Moisture Problems

In some ways, the move toward more environmentally-friendly materials and practices creates the moisture issue.

In the effort to “go green”, makers of glues and epoxies have replaced toxic substances with water-based ingredients. When the final slab mixture of concrete, limestone and calcium silicate combines with the floor adhesives and surface layer, water vapors interact with the water-based glues and move up through the slab. This results in failure of the epoxy coatings to adhere to the floor.

In commercial building such as hospitals, the failure is more than a cosmetic issue. It affects the safety of everyone walking on the floor.

Of course, all concrete contractors use water in their cement mix to develop and maintain the strength of the concrete. The problem arises when slab vapor emissions create excess moisture. And it’s more than potential “slip and fall” accidents related to flooring failure that’s the concern. Excess moisture may also increase the risk of mildew and mold growth.

Moisture mitigation contractors, such as PSI Americas of Chicago, understand the importance of having a plan prior to installing concrete flooring. Their solution includes such activities as moisture tests for reading relative humidity and applying the right topical coatings to ensure that the concrete mixture adheres properly.

Minimizing Concrete Moisture Problems

PSI must consider a variety of issues when dealing with potential moisture and water issues in concrete floor surface prep and installs. To minimize potential problems, they make sure to follow the 5 methods below:

1) Proper ratio of water to cement in the flooring installation mixture
2) Careful monitoring of pour to prevent extra water entering mix
3) Use of lightweight, low-porosity aggregate rather than porous aggregates when needed above grade
4) Avoiding hard trowelling which can create densified layers on concrete surface that prevent drying
5) Adequate curing with blankets or sheeting

PSI Americas Illinois is available to help you with moisture mitigation issues on your next commercial flooring project. We’ve assisted with surface preparation and installation in the construction of hospitals, convention facilities, restaurants and more.

We specialize in commercial concrete floors, epoxy coatings and concrete polishing. Contact us at 1-877-97-LEVEL or fill out our Free Quote form at right to learn more.

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Filed Under: Moisture Mitigation

Comments

  1. Jason Strong says

    November 9, 2015 at 10:34 pm

    My uncle does concrete work for a living and loves it. He is constantly staying busy and is in charge of several construction progress that requires concrete services. I’m grateful for these services and all that they do to build up our society.

    Reply
  2. Concrete Sealers says

    November 17, 2015 at 5:29 pm

    Great article. Many companies do not address moisture mitigation before applying VCT to 100,000sf retail stores (just to save money) and they always have issues later in time.

    Reply
  3. Breck Lewis says

    December 4, 2015 at 1:50 pm

    I really like how you said that, “Proper ratio of water to cement in the flooring installation mixture.” This is very important if you want to minimize concrete moisture problems. I was laying down some cement in my backyard and was surprise how hard it was to get the right water ratio in my cement. Thanks for sharing these great tips that were really helpful to me.

    Reply
  4. Vincent Burns says

    February 10, 2016 at 7:15 pm

    It is interesting how concrete can have moisture problems when you need to have moisture to actually get the cement poured. I can see how you would want to have the right consistency and right water to mix ratio so that you don’t have a concrete mess. The more you work on concrete the better.

    Reply
  5. Andy Harrison says

    March 9, 2016 at 12:28 am

    Concrete and moisture don’t mix. It is important that when building with concrete that you use the right materials and that it properly cures. Not having the epoxy coatings stick to the floor would be a contractors worst nightmare. That would probably mean that they would have to re-pour the concrete.

    Reply

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