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Preventing Moisture in Grain Bins by TMI Coatings


TMI Coatings, Inc. (TMI) applies a waterproof membrane to prevent moisture entering around the base of the grain bins. We provide solutions to costly problems. A North Dakota grain company had an issue with moisture seeping into the bottom of three, 42’ diameter, steel grain bins. The infiltrating water would heat and subsequently cause the grain to mold and this process results in ruined product, wasting valuable assets. TMI recommended that the bin exteriors be sealed with a waterproof membrane to prevent future moisture problems.


  • Removed exterior grain and debris where the steel bins met the concrete pads.
  • Prepared the steel/concrete juncture by removing the old, failed sealant/coating with grinders and hand tools.
  • Next, applied a bonding primer to the steel/concrete juncture, up the bin sides, and onto the concrete.
  • To prevent moisture from entering the bin, sealed the steel/concrete juncture with two full coats of urethane elastomer. This product will flex with the freeze/thaw cycle, making it a great solution for many regions of the United States.


Weather in the Midwest varies from hot and humid to driving rain and frigid temperatures. Because TMI’s waterproof coatings expand and contract, they’re ideal for protection during the most extreme temperature changes.

With over 35 years of experience, TMI Coatings will have your project completed on time and within budget. Contact us today at 651-452-6100 for your free, no obligation quote.


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