If you own a steel building or work in the metal industry, you have probably heard about metal building condensation or “metal building sweating”. Condensation may cause your steel building to easily corrode and promote the growth of mold and mildew. Let’s understand why condensation occurs and how to stop condensation in a metal building.
Why does condensation occur in steel buildings?
Condensation occurs when there is more moisture than the air can hold. Warm air can hold more moisture and when the air cools down, it reaches a saturation level and water droplets start to form. In metal buildings, when the warm air comes in contact with the cooler metal surface, the air cools down and deposits condensation on the building.
How to stop condensation in a metal building?
Higher levels of humidity and the temperature difference between the building surface and surrounding air are the factors that contribute to metal building condensation. So, when we talk about preventing condensation, we need to look at these two factors. We need to ensure the air inside is not coming in direct contact with the metal surface and reduce the humidity levels to stay between 30 to 50%.
Below we discuss 4 ways to prevent steel building condensation.
Properly insulate the metal building
Make sure the insulation is continuous without leaving any exposed surfaces. Placing the insulation only between the framing members will still cause water droplets to accumulate and ooze through the insulation. Properly installed insulation helps to regulate the interior temperature and prevents condensation.
Use proper ventilation
Proper ventilation will help in air circulation and keep things dry. You can run fans, add ceiling vents, or simply keep your windows open to encourage airflow. Stagnant air can result in moisture accumulation and condensation.
Prevent moisture coming from the ground level
Make sure there is adequate drainage to divert any sources of water such as roof runoff water away from the building. Having gravel or crushed rock under the concrete slab can help reduce condensation occurring at the base of the steel building.
Install vapor barriers
Place vapor barriers on the building walls to prevent moist air from reaching the metal surface. It is a good idea to engage an architect or engineer during the construction process to select the most appropriate barrier protection by reviewing the needs of the building.
Taking the appropriate measures to prevent steel building condensation can help improve the lifespan of your steel building.
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