What are intumescent coatings made of?
The secret behind these coatings lies in their chemical makeup. An intumescent coating consists of many chemicals, all suspended in a binder. The binder softens in response to heat exposure, letting the suspended chemicals react. These chemicals produce a foam, which hardens into an insulating material called “char.”
What is intumescent coating?
Specifically, an intumescent paint is a coating that reacts to heat by swelling in a controlled manner to many times its original thickness, producing a carbonaceous char formed by a large number of small bubbles that act as an insulating layer to protect the substrate.
What is cementitious fireproofing?
Cementitious fireproofing is a Portland cement-based material that is batched onsite and spray applied. It is commonly used to provide fire protection to structural steel members, but can also be used to protect structural concrete.
How is intumescent coating applied?
Some intumescent paint is just like regular paint and can be applied using a sprayer, a brush or roller. When applying intumescent paint, you need to make sure it’s being applied in an even coat and that all of the surfaces have been covered.
What is intumescent coatings for steel?
An intumescent paint is a coating that reacts to heat by swelling in a controlled manner to many times its original thickness, producing a carbonaceous char formed by a large number of small bubbles that act as an insulating layer to protect the substrate.
How does intumescent coating protect steel?
Fire rated intumescent paint is the most commonly used coating to protect steel against fire and acts as an insulator, forming a solid char in response to heat. Intumescent paint can be applied on steel as a thin or a thick film coating.
What is cementitious coating?
Cementitious Coatings Cementitious waterproofing coatings are breathable, seamless coatings used to provide positive and negative side waterproofing protection on concrete and masonry surfaces. They prevent damage from water infiltration and resist mold and mildew.
Can you paint cementitious fireproofing?
Can fireproofing products be painted? When applying paint as a top coat or color coat over a product, it is required that the paint be non-bridging water-based latex. The paint should be applied over the material with the minimum amount required so as to avoid saturating the material.
How does intumescent paint protect steel?
How do you fireproof steel?
In this article, we will outline how all of these methods ensure the compliant protection of structural steel.
- Intumescent paint. Many structural fire protection strategies include intumescent paint for steel as a critical solution.
- Intumescent film coatings.
- Fireproof boards.
- Cementitious coatings.
- Firestopping sprays.
Does intumescent paint prevent corrosion?
Passive fire protection intumescent coatings must protect against fire, but they must also protect the steel against corrosion in a range of environments.