What are Fireproof Floors and Walls?

Fire-resistant flooring and wall systems include properties that are resistant to fire and will not structurally fail for a specified amount of time. These can be differentiated based on ASTM Methods. Fireproof floors and walls are able to catch on fire, but have the ability to self extinguish. While fire-resistant floors and walls are some of the safeguards that help protect people from harm, if a fire were to break out in your facility, it is essential that proper fire safety procedures are followed in order to save lives.

Standard Tests for Fire-Resistance


ASTM E648 – This is the standard test method for critical radiant flux of floor-covering systems using a radiant heat energy source. The critical radiant flux of the flooring is determined by igniting it to see how far the flame spreads prior to self-extinguishing. The higher the number, the better the fire resistance. A Class 1 fire rating requires the number to be greater than 0.45 W/cm2.

ASTM E662 – This is the standard test method for specific optical density of smoke generated by solid materials. The optical density is determined by the smoke generated when a sample is ignited. The lower the number, the better the fire resistance. Class 1 requires less than 450 Ds but can vary by local requirements for certain areas (means of egress, etc.)


ASTM E84 – This is the standard test method for surface burning characteristics of building materials. This tests the flame spread and optical density of smoke generated for building materials. Class 1 requires below 25 for flame spread and below 450 Ds for smoke generation.

Benefits of Fire-Resistant Floors and Walls

Fire-resistant flooring and wall systems reduce the spread of flames and smoke in the event of a fire-related incident within a facility.

Benefit highlights include:

  • Reducing the spread of flames and smoke throughout a facility or area
  • Providing greater protection of people and property during a fire-related accident/incident
  • Gaining peace of mind/security against careless actions (e.g. the discarding of lit cigarettes)

Additional Benefits of Stonhard Fireproof Floors and Walls:

Recommended Industries

Nearly all industries benefit from the installation of fire-resistant flooring. In fact, most facilities require it.

Recommended industries include:

Recommended Products

*All Stonhard floors and walls are fire-resistant. The majority of Stonhard products qualify for a Class 1 rating. Our team of Territory Managers, Architectural and Engineering Representatives will assist you in finding the fire-resistant floor or wall system to meet your specific needs.

Recommended products include:

  • Stonclad - general manufacturing, food and beverage, chemical & mining, pharmaceutical & biotechnology
  • Stonblend - pharmaceutical, healthcare, educational, laboratory, corporate
  • Stonblend - parking garages and mechanical equipment rooms
  • Stonglaze - (for walls) hospitals, commercial/industrial kitchens, vivariums, research facilities
  • Stonres - public spaces -- museums, lobbies, arenas, also healthcare, education and retail
  • Stontec - fast install for new construction -- healthcare, education, entertainment venues
  • Stoncrete - schools, retail locations, other commercial and front-of-house spaces

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user/owner of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use, including what fire resistance is best suited for its environment.



    Please enter the zip code of your facility or project to find your local Territory Manager and/or Architectural & Design representatives.

    OR give us a call 800.257.7953.

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