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Condensation is one of the most misunderstood problems in buildings and industrial facilities. It is often blamed on poor insulation, inadequate ventilation or even the weather itself. In reality, condensation is governed by a simple principle of physics: surface temperature in relation to the dew point.
Understanding that relationship is the key to managing condensation effectively, and it’s also why surface thermal management coatings such as Super Therm can play an important role in reducing condensation risk.
Condensation occurs when a surface cools to or below the dew point temperature of the surrounding air.
Warm air can hold more moisture than cold air. As warm, moisture-laden air contacts a colder surface, the air immediately next to that surface cools. Once it reaches its dew point, the excess water vapour changes into liquid water.
This is exactly why:
The moisture wasn’t inside the material—it came from the surrounding air.
Contrary to popular belief, condensation is not determined simply by humidity.
It depends on three factors:
For example:
If a steel beam cools to 11°C, condensation forms.
If Super Therm helps keep that same surface at 15°C, condensation is unlikely to occur because the surface remains above the dew point.
The objective therefore isn’t simply adding insulation—it’s managing the surface temperature.
Steel is an excellent conductor of heat.
During winter it rapidly loses heat to the outside environment. Interior surfaces can quickly become colder than the indoor air, creating ideal conditions for condensation.
This can result in:
The problem becomes worse in agricultural buildings, warehouses, food processing facilities, marine environments and industrial plants where humidity levels are naturally higher.
Unlike conventional insulation that primarily slows conductive heat transfer through thickness, Super Therm works by managing heat at the surface.
Its multi-ceramic technology reduces heat movement across the coating while maintaining a warmer interior surface during colder conditions.
This provides two important benefits:
By reducing heat loss through the building envelope, interior surfaces remain closer to the indoor air temperature.
Even a few degrees can mean the difference between remaining above the dew point or falling below it.
Super Therm moderates rapid temperature swings.
Instead of metal surfaces quickly following outdoor temperatures, the coating slows those changes, reducing the likelihood of crossing the dew point threshold.
Many people associate Super Therm with blocking solar heat in summer.
Its ability to reduce heat transfer also benefits buildings during winter.
In colder weather it helps retain internal warmth within the building envelope. By slowing heat loss through roofs and walls, interior surfaces stay warmer, reducing the conditions that allow condensation to form.
This means the same coating contributes to:
An Australian Super Therm project in Canberra demonstrated another important benefit.
Monitoring of a commercial building coated with Super Therm showed not only reduced heat transfer but also a reduction in indoor humidity levels compared with untreated conditions.
While the project was not specifically designed as a condensation study, the improved thermal stability and reduced humidity provide valuable insights into how managing surface temperatures may contribute to a healthier internal environment.
Applications include:
Every application should be assessed according to its operating temperatures, humidity levels and dew point conditions.
There is no universal temperature difference that guarantees condensation.
A surface doesn’t need to be “3°C colder” or “5°C colder.” It simply needs to fall below the dew point for the surrounding air at that moment.
That’s why professional condensation assessments consider:
Managing condensation requires understanding the complete thermal behaviour of the building envelope rather than relying on insulation thickness alone.
Super Therm should not be viewed as a replacement for good building design, ventilation or vapour control. Instead, it complements these systems by improving surface thermal behaviour.
By helping surfaces remain above the dew point for longer periods, Super Therm can reduce condensation risk while simultaneously delivering year-round energy savings and thermal comfort.
For facilities battling corrosion, mould, water damage or condensation on metal surfaces, managing heat at the surface may be the missing piece of the solution.
NEOtech Coatings – Super Therm Thermal Insulation Coatings
https://neotechcoatings.com/
Canberra Case Study – Super Therm Permeability and Building Performance
https://neotechcoatings.com/permeability-of-super-therm-in-australian-buildings-canberra-act/
Engineering Toolbox – Dew Point Temperature Explained
https://www.engineeringtoolbox.com/dew-point-air-d_682.html
U.S. Department of Energy – Air Sealing Your Home
https://www.energy.gov/energysaver/air-sealing-your-home
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