Condensation Control

Super Therm® insulation used for condensation management

Condensation is the accumulation of water on surfaces as a result of temperature differences between the surface and the surrounding air. When warm/moist air comes into the area and accumulated under a roof, the warm/moist air sits next to the cold surface. Cooled and cool air cannot hold moisture, therefore condensation. Usually in Australia condensation is more common in winter as the metal roof cools with the night air. When warm air comes into contact with a colder surface, it cools down and can’t retain the same amount of water vapour. The excess water vapour is released and forms condensation.

Super Therm® helps prevent condensation and thus corrosion and mould.

On a traditional roof, without protection, condensation builds up on the metal underside of the roof. It then drips onto the ceiling below. The fibreglass batts below act like a giant sponge. It has been noted as the batts absorb the moisture from above ceiling stains can appear. There have been cases that the ceiling can become so wet that it is in danger of caving in. This also means the value of fibreglass as an insulator has also deteriorated.

When Super Therm® is applied to the condensation side, generally inside, it prevents the water vapour build up. If the exterior facing the sun has been coated with Super Therm®, then the underside is colder. This would require 8mm of HPC® with an overcoat of Super Therm® to block the trapped warm/moist air from touching the cold surface.

Note: Anytime warm/moist air is allowed to come into a cool room, you will have condensation because the warm/moist air will begin to cool and you will have water droplets everywhere anyway, but not dripping from the ceiling.

Super Therm® has many other cost-reducing, profit-enhancing benefits. Condensation and moisture inside buildings quickly deteriorates existing insulation materials, and can be a breeding ground for disease, damage internal structures, causes corrosion and drips water under unprotected areas causing inconvenience.

Super Therm® on houses, storage containers, verandahs and cold water pipes, feed bins etc will eliminate condensation and moisture, extending the life of existing materials and preventing moisture damage. Use of Super Therm® on Bin Feeders in agriculture for example, also prevents condensation and moisture contamination of the feed, resulting in less feed waste. Other benefits include:

  • Stops container rain or condensation inside shipping containers
  • Reduce risk of condensation on cold water pipes
  • Protect feed bins to reduce condensation and feed degradation
  • Insulate freezers or refrigeration units to protect goods and reduce costs
  • Prevents condensation and corrosion in air conditioning systems, pipelines, tanks, ships, etc.
  • Protect goods by insulating long haul trailers designed to carry perishables
  • Reduce heat stress during animal transportation by applying to vehicles
  • Reduce energy costs and increase comfort by coating roofing and interior/exterior walls to keep heat in during winter or heat out during the summer
  • To provide a fire-resistant coating for substrates. Super Therm® has a “0” fire and smoke spread and will not contribute to flame providing added benefits and safety.


Super Therm® on Poultry Houses

  • Fact: Reduced attic temperature by 16.7°c (30° F) – Benefit: Death rate of chickens dropped by 75%
  • Fact: Chickens were heavier at the end of growth season – Benefit: more case value per bird
  • Fact: Current insulation materials become loaded with moisture form condensation and must be replaced every 5 years. Super Therm® eliminated condensation and will perform for 20 years without concern for reinsulation – Benefit: Saves the cost of reinsulation 4 times over 20 years of the life of the house, insulation materials and labour savings. Example

Super Therm® Coverage for a shipping container

Each container has 2 sides / 2 ends and the roof

  • Standard 20’ x 8’ x 8’ = total area to cover 56.5m2 – 608 f2 (60mapprox.) 2 pails needed
  • Hi cube 20’ x 9.6’ x 8’ = total area to cover 68m2 – 729.6 f(70mapprox.) 2 pail needed
  • Standard 40’ x 8’ x 8’ = total area to cover 101m2 – 1088 f(102mapprox.) 3 pails needed
  • Hi cube 40’ x 9.6’ x 8’ total area to cover 122m2 – 1305 f(122mapprox.) 3 pails needed

Currently we sell full 5 gallon US (18.9 litres) pails. We recommend using Super Therm® on the floor internally as this neutralises any contaminants in the timber and provides additional floor insulation. Super Therm® has a coverage of 40-45 mper pail depending on application.

Note: if container has rust it needs to be thoroughly cleaned and we suggest a coat of Rust Grip® before you apply Super Therm®. For the ultimate protection then apply Enamo Grip over the top as the perfect protection against the elements.

Contact us below if you wish to purchase Super Therm® for your shipping container project.

Recommended coating system for shipping containers

  1. The SPI Coating System applied to the shipping containers consists of the following: After thorough pressure clean and drying, Super Therm® is applied directly to the exterior walls and roof of the container, and HSC® Coating (recommended) and Super Therm® applied directly to the interior walls and ceiling of the container.
  2. In the real world environment with factors of condensation, air infiltration, moisture absorption, and thermal bridges, the SPI Coating System provides an insulation benefit for the shipping containers in cool to hot environments.
  3. The SPI Coating System provides insulation against radiation heat transfer and conductive heat transfer, blocks the absorption of moisture, air infiltration, condensation, and mould and mildew, and is a fire resistant coating with zero flame spread and zero smoke.

HPC for Cool Room Condensation – 30°C variation

The Challenge: A client was looking to stop condensation on a wall that was an office and the room was 22°C. The other side of the wall was a cool room at -15°C with panelling. Both walls are interior to the building however for this conversation the office wall is the exterior wall.

HPC Solution from SPI Coatings

When you get over a 30°C difference between the interior and exterior of a wall, you need some thickness, so you are only interested in the exterior side of the wall.

Why, because the hot moisture air is only on the exterior wall.

When the warm air hits the wall and sets, it cools and when it cools, it cannot hold the moisture and it shows as condensation on the side of the warm air. As warm air cools, it drops out it’s moisture.

The interior is cold and no moisture as the air conditioning unit pulled all the excess moisture out of the air and cool air does not hold moisture. You must prevent the warm moist are from setting on the cold common wall between interior and exterior.

To do this, you must apply HPC® for thickness to 13mm dry thickness and over coat with Super Therm®.

This blocks the warm air from setting on the surface of anything cool, the Super Therm® helps to throw off the radiation by using emissivity to release the warmth off the surface.

You must have the thickness of the HPC® to prevent the wall surface with Super Therm® on it to ever being cool that would cause the warm air still covering the exterior wall during the warm air laying on the wall and then being thrown off by Super Therm®.  You would still have some condensation without HPC®.

NEOtech Coatings Australia are pleased to be a part of and to support your efforts to develop energy efficient and affordable structural systems for use in home and commercial construction using shipping containers.

Looking to join one of the world’s leading coatings companies. Contact us if you’re a quality applicator looking for new products and markets!