Protecting Your Investment: Moisture and Garage Floors

Garage Floor CoatingEpoxy Flooring

In Maryland, the mix of humid summers and wet winters creates a perfect environment for moisture-related issues in garage floors. Perfect for the moisture, that is, not so much the homeowner.

Moisture trapped beneath concrete surfaces can lead to significant problems—this could lead to deterioration of the garage floor coating and subsequent delamination. Many homeowners and one-day contractors fail to assess moisture content before application, leading to expensive and, if we’re being honest, unnecessary repairs.

How on Earth does moisture from the ground hurt my garage?

Water vapor can build up beneath the slab, called moisture-vapor transmission, creating hydrostatic pressure that pushes upwards on the concrete coating. This problem often becomes evident within six to twelve months (which is FAST if you just paid a bunch for a brand new garage floor).

But what do I do?

You need a proper moisture assessment before jumping headfirst into a new garage floor, but professionals shouldn’t be skipping this step anyway. The pros here in Maryland conduct thorough evaluations, checking for visible signs of moisture such as efflorescence and dark spots, and they use calibrated moisture vapor transmission meters for accurate readings. It sounds complicated, but it’s just a necessary process that any seasoned installer should be super familiar with.

When medium to high moisture levels are detected, a moisture-mitigating epoxy primer is applied (never a fast-curing polyurea like the “1-day” guys use). The slower-curing, moisture-mitigating epoxy primer penetrates deeply into the concrete, creating a strong bond. This lays the groundwork for the subsequent flake broadcast and dual polyaspartic clear topcoats. (Your entire coating system is only as strong as its primer coat). This meticulous process ensures that the coating system can withstand Maryland’s variable climate.

Don’t forget: A well-prepared floor not only prevents moisture-related failures but also enhances your home’s appeal, making it more attractive to potential buyers. By “well-prepared”, we mean (1) it has been ground down with diamond grinders, and (2) the proper moisture-mitigating epoxy primer is selected.

Choosing a professional installation that includes moisture assessment and preparation is crucial. By addressing moisture issues from the start, you can enjoy a resilient and aesthetically pleasing garage space for years and years.