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Why Cementitious Fireproofing Is Still the Industry Standard for Structural Steel

Posted by Ecostar Insulation on June 17, 2025

Most commercial buildings are comprised largely of a variety of metal structures, including steel ones. This is due to the incredible strength, durability, and longevity of steel. The one caveat with exposed steel is that it needs to be protected in case of a fire. This is where cementitious fireproofing can help. Cementitious fireproofing is the industry standard choice for steel structures in commercial buildings. It offers superior protection, durability, heat resistance, and longevity under extreme conditions when compared to other options on the market. The expert fireproofing contractors at EcoStar Insulation specialize in cementitious fireproofing applications. Contact our team today to get started.

Here is a breakdown of why cementitious fireproofing is preferred for steel structures.

What is Cementitious Fireproofing?

cementitious fireproofingCementitious fireproofing is a spray-applied material that is made of cement, plaster, and aggregates. The spray application allows it to coat the entire surface of metal structures easily and evenly allowing for superior protection against fire. 

When compared to other popular fireproofing methods like intumescent fireproofing, it is evident that cementitious fireproofing is much more cost-effective, long-lasting, and durable. The primary reason why cementitious fireproofing is preferred for steel structures is that it can passivate steel. What this means is that it can create a protective layer that helps prevent rusting and corrosion, keeping your steel structures strong. 

Why Cementitious Fireproofing Remains the Standard

Cementitious fireproofing remains the industry standard for fireproofing steel structures, simply because of its performance. 

Proven Track Record in Fire Resistance

Cementitious fireproofing offers excellent heat resistance, allowing it to remain intact even under extreme conditions. This fireproofing can last over an hour when a building is experiencing a fire. It can even withstand over 1000 degrees Celsius for an extended period of time. This helps keep steel structures intact, preventing your building from collapsing and giving occupants ample time to escape.

Cost-Effectiveness

Cementitious fireproofing tends to be more cost-effective than intumescent fireproofing because of its easy application. Cementitious fireproofing is spray applied, meaning it takes significantly less time to install, making labour costs much smaller than intumescent. This provides you with excellent value for your investment. 

Durability and Longevity 

Another reason why cementitious fireproofing is the standard choice for steel structures is because of its longevity and durability. Cementitious fireproofing remains physically sound for many years and usually requires little to no maintenance or touch-ups unless there is a fire outbreak. This longevity is associated with cementitious fireproofing’s ability to bond with steel. 

Choose the Industry Standard for Your Building with High-Quality Commercial Fireproofing

Cementitious fireproofing continues to stand the test of time as the trusted solution for protecting structural steel in commercial construction. Its unmatched combination of affordability, reliability, and high fire resistance makes it the go-to choice for builders and property owners alike. When applied correctly, it provides lasting defence against fire damage, keeping your building and its occupants safe. If you're planning a new build or upgrading an existing property, investing in professional fireproofing is essential. Trust the experienced fireproofing contractors at EcoStar Insulation for the job. Reach out today to learn more or request a quote!

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