Thermal and Ignition Barrier Intumescent Coatings
Determining the type of material needed for a fire-retardant coating will be based on whether you require a thermal barrier, ignition barrier, or both. Different ratings measure flame spread, how effectively the coating limits flammability, and coating efficacy for delaying and resisting the effects of fire.
Because of this, all intumescent coating is also intended to be fire-retardant coating. A thermal barrier is typically used on foam to further prevent increased temperature when a fire or fire hazard is present. An ignition barrier prevents material from igniting, slowing the spread of fire.
Determining Fire-Retardant Intumescent Coating
Intumescent coating is an affordable option for passive fire protection. According to SSPC’s 2011 Protective Coatings Glossary, a fire-retardant is a “…product, under accepted methods of test, that will significantly: (1) reduce the rate of flame spread on the surface of a material to which it has been applied, or (2) resist ignition when exposed to high temperatures, or (3) insulate a substrate to which it has been applied and prolong the time required to reach its ignition, melting, or structural-weakening temperature” [ASTM D 16].
Flammability is defined as the ability to catch fire (a flammable material burns quickly and easily). Inflammability can sometimes mean “not flammable.” SSPC has separate definitions for a flammable aerosol, gas, liquid, and solid material, based on their respective properties to ignite and burn, according to various test methods.
Moreover, an intumescent paint, according to SSPC’s definition, is “a fire-retardant coating that when heated forms a foam produced by nonflammable gases, such as carbon dioxide and ammonia. This [reaction] results in a thick, highly insulating layer of carbon (about 50 times as thick as the original coating) that serves to protect the coated substrate from fire. See also FIRE-RETARDANT [ASTM D 16].”
Applications Available with Our Intumescent Paint:
Some of the places that you can apply our intumescent paint include but are not exclusive to:
- Walls, foam, attics, and crawl spaces
- Open-cell insulation foam
- Closed-cell insulation foam
- Bio foams
- Lumber
- Oil rigs, boats, and ships
- Industrial worksites and mining
- Commercial trucks and machines
- Factories
- Storage tanks
- Structural steel
- Commercial roofing materials
Customer FAQs on Intumescent Paints and Coatings
Where can intumescent paints and coatings be used?
Intumescent coatings and paint are suitable to be used on a variety of surfaces including wood, steel, and other materials where fire protection may be required. Be sure to talk with an expert before starting a project to determine if the surface is fit for coatings and paints.
Can intumescent coatings be used outdoors?
Yes. However, there are specialty types of intumescent coatings that are designed and engineered for outdoor use. These specific types are created to provide both fire protection as well as weather resistance.
What does the application process look like for intumescent paints and coatings?
The application process varies depending on the intumescent coating product that is chosen. However, the typical process includes surface preparation, primer application, intumescent coating application, and, in some cases, a topcoat. It is important to thoroughly read the product directions before utilizing the product itself.
How long do intumescent coatings typically last?
The lifespan depends on factors including environmental conditions and frequent maintenance. Performing regular inspections and recoating when it is necessary will help to extend the lifespan and ensure the fire protection properties are withheld.
Can intumescent paint be applied over existing paint?
In most cases, intumescent paint can be painted over existing paint. However, there can be different surface preparation guidelines and compatibility checks depending on the type of existing paint and intumescent paint being used. It is recommended to consult the product guidelines for specific recommendations.
Are there any safety precautions to be aware of when working with intumescent paints?
The main safety precautions that are important when applying intumescent paints include having adequate ventilation and wearing protective gear on the face and body. Products will come with safety data sheets that provide additional safety information, including insights on potential health risks.
Do intumescent coatings affect the appearance of surfaces?
Intumescent coatings and paints are created in various shades of gray and finishes that you can select from based on the needs of your project. The impact on appearance depends on the specific product being used.
Contact SprayWorks Equipment for Your Fire-Retardant, Intumescent Coatings
To learn more about our intumescent paint, please contact us today. We look forward to speaking with you about how we can best accommodate your intumescent coating needs!
