Why Does Concrete Sweat?

When warm air comes into contact with a colder temperature concrete slab, the condensation will build up on the surface and can commonly be defined as concrete sweating. The combination of temperature swings and humidity build up cause the concrete to sweat.

Why Does Concrete Sweat?

Concrete is one of the world’s most commonly used building materials, providing reliable and durable foundations for our homes, businesses, and infrastructure. But one lesser known fact about concrete is that it can sweat, leading to a variety of problems for those who use it. So why does concrete sweat, and how can it be prevented?

At its simplest, concrete sweating occurs when moisture in the concrete rises to the surface and condenses, forming a thin layer of moisture on the surface. This is due to a process known as vapor drive, where vapor molecules in the concrete are driven to the surface by changes in temperature or pressure. This vapor can then condense, leading to concrete sweating.

Concrete sweating can be caused by a variety of factors, including changes in the local environment, exposure to moisture and humidity, and changes in barometric pressure. In many cases, concrete sweating can be prevented by properly sealing the concrete and ensuring it is adequately insulated.

When concrete sweats, it can lead to a number of problems. Most notably, the moisture on the surface of the concrete can damage any objects or materials placed on or around it. This can include furniture, carpets, and even paint, which can all be damaged by the