
Where We Operate
Iowa
Illinois
Wisconsin
Southern Minnesota
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Locations We Service
Why Midwest Masonry Requires Specialized Protection
The Science of the Freeze-Thaw Cycle
In Iowa and across the Midwest, masonry doesn't just age; it battles the elements. Our region is defined by extreme temperature fluctuations where the thermometer can swing 40 degrees in a single day. This creates the "Freeze-Thaw Cycle": moisture seeps into porous mortar joints, freezes and expands, and then thaws, leaving behind microscopic fractures. Over time, these fractures lead to crumbling mortar, "spalling" (where the brick face pops off), and serious structural instability.
Beyond Basic Repair: The TNT Methodology
A "one-size-fits-all" mortar mix will fail in the Heartland. Because many of our local buildings in cities like Iowa City and Davenport are historic, they require a specific balance of lime and sand to remain flexible. TNT uses advanced mortar-matching and moisture-mitigation techniques specifically designed for the I-80 corridor. We don't just patch cracks; we reinforce your building's envelope to withstand the unique humidity of the Mississippi Valley and the punishing winters of the Central Plains.
Local Knowledge, Regional Results
With over 30 years of on-site experience from Des Moines to the Quad Cities, we understand the soil shifts and environmental stressors unique to our corner of the country. We provide a level of regional expertise that national contractors simply can't match, ensuring your masonry remains a beautiful, functional asset for the next generation.





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Our skilled team is here to bring your building to life. Contact us today to discuss your project!









