Intumescent Steel Protection

Architectural fire protection for exposed structural steel in interior and exterior applications

Modern design practice has increasingly incorporated architecturally exposed structural steel, or AESS. Originally used by structural engineers as a highly elaborate exoskeleton, AESS has evolved into an outlet for both engineers and architects to integrate components of their work into the visibly finished structure. If these exposed design elements are also part of the primary structural components of the building, the integrity of the structural steel must be protected with an intumescent fire protection coating.

Hilti's Intumescent Steel Protection portfolio has expanded to now offer solutions for both water-based and solvent-based fire proofing. Also known as IFRM, these products are optimized for architecturally exposed structural steel in interior and exterior applications with approved top coats. 

Tested for a wide range of beams and columns for multiple hourly ratings

Hilti Fire Finish CFP-SP WB 120+ and the NEW CFP-SP AWHB offer key aesthetics and productivity gains to the contractor and installer.

Water Based IFRM

CFP-SP WB 120+

  • Apply up to 65 mils wet per pass
  • Glass fiber-free formulation
  • Premium aesthetics
Fire Finish 120+ Technical Documents

Solvent-based IFRM


  • Up to 160 mils per coat (dries in 24 hours) - MAX 350 mils per coat if dry time is not a concern
  • Can get wet 1 hour after product is applied
  • UL approved exterior exposure without a topcoat
  • Apply in a wide range of temperature and humidity conditions
CFP-SP AWHB Technical Documents

Choose Hilti IFRM products

Superior fire protection and distinctive aesthetic finish

Architects can specify Hilti IFRM products with confidence knowing that they will not only get the superior aesthetic finish they desire, but also the dependability and reliability of a fire proofing product tested to ASTM E119/UL 263 and certified for up to a 4-hour fire rating.

Contractors can see a productivity gain by choosing Hilti’s intumescent steel protection products for their next job.

Installers will notice the products' high wet-film thickness features allow them to apply more product per pass and less overall coatings compared to thinner competitor products. 

Additional Resources

Whether it be onsite consultation or corporate engineering support via product testing and engineering judgments, Hilti’s experienced team is ready to support you. Our technical specialists offer in-depth training on Hilti’s intumescent products in addition to providing a variety of continuing education opportunities covering core applications as well as today’s trending industry topics.

To learn more about Hilti’s steel protection solutions, reach out to our team of technical specialists to schedule an AIA accredited education session.