Coating News, Articles, Industry Resources,

Disadvantages of Epoxy Coatings

Ecodur_Epoxy_sm
 
Epoxies are a popular type of coating, but it might not always be the best choice for your project, especially in the long run.
 
Epoxies are solvent-based and can cause some serious health issues which include:

  • Any exposure to high amounts of epoxy consistently without proper equipment, asthma and sensitization to epoxy can occur.
  • Liquid and partially cured epoxies evaporate, which can then affect the human respiratory system. And note that the evaporation process speeds up with poor ventilation and high temperatures.
  • Inhalation of epoxy fumes can irritate and inflame the eyes, lungs, throat, and nose.
  • Inhalation of epoxy dust will get trapped in the mucus lining of the respiratory system.

On the coating performance side of the equation the limitations include:

  • Epoxies are limited to the type of surface it can coat. Wood, for example, is not compatible with epoxy because wood is far more flexible than epoxies, which can lead to the epoxy cracking due to the expansion and contraction of the wood.
  • When coating on steel for applications like internal tank linings, epoxies do not protect against reverse impacts.
  • Full of solvents. With a solvent-base system, you cannot stop the spray gun or you will risk throwing all of your hoses away.
  • They are highly flammable.
  • Must use proper ventilation at all times.
  • They have limited repairable because they do not ‘autobond’ to previous coats.
  • Epoxies do not perform well in colder temperatures. Expensive heating equipment would need to be used to raise the temperature for the coating. The other situation would be in a refrigeration environment (foods) in which they would need to raise the temperature in order for the coating to be applied and cure. This would be increased downtime for the facility owner.

The advancements in technology have allowed the coating industry to produce more environmentally friendly and toxic-free coating – like our Ecodur.
 
Ecodur is solvent and toxic-free and has a certified NSF-61 rating for drinking water.
 
Ecodur also saves coating applicators money because it can be applied to a lot more square footage in less time than a typical epoxy coating. Traditional epoxy takes about twice as much time to apply and to cover a particular surface, especially on vertical surfaces where sagging problems for the coating can occur. Ecodur does not have this problem because the cure rates are so fast that it does not have time to even sag before the coating hardens.
 
Advantages of Ecodur include:

  • It’s green and sustainable in terms of the technology. No emissions or waste in the manufacturing process
  • A 25-year track record
  • Uses renewable plant ingredient and gypsum (main component).
  • It molecularly bonds to wood and is flexible to resist reverse impacts.
  • There are no big or messy clean-ups to do. Just roll up the hose and go.
  • It performs well in cold weather and the curing rate is programmable.
  • Infinitely repairable because they ‘autobond’ to previous coats.
  • Superior adhesion properties.
  • There is no flash point, and it’s VOC-free and BPA-free.
  • High chemical resistance
  • No solvents in Ecodur allow the coating to cure fast, which means systems are returned to service quicker. Plus, spraying is easier to do and the spray gun can be put down and picked up again, unlike epoxy spray guns.
  • There’s no need to apply multiple coats. One coat will do the job, which means the project will be less expensive in terms of overall costs.

Overall, Ecodur meets all the technical requirements for protecting surfaces from various types of corrosive elements the surface is subjected to. It is simply better, faster, and cheaper.
 
For more information contact us at info@castagra.com or 1 (888) 388-2935 (Toll Free US/Canada)