Understand the steps on how to resolve one of the most overlooked safety hazards in fire-resistance rated ceiling/floor assemblies.

Applying Building Codes into Modern Construction

Imagine your next project, redevelopment, or new construction – it’s your choice. You are already envisioning the building’s finish, integrating your signature design – but then you get smacked with your local jurisdiction’s code requirements. Unfortunately, this is a common situation for most architects and developers.

When dealing with compliance, architects are often faced with compromising their original design to meet certain building code conditions. But with these building code requirements, it allows our communities to have peace of mind when residing and working within its structures. Without these standards, there would be a continuous fear of a building’s structure being compromised.

As construction technology and practices have advanced over the years, architects have been able to easily find a compromise between compliance and design. However, there are still certain scenarios in modern construction where this doesn’t apply – or so they think.

The Importance of Fire-Resistance Rated Ceilings

Introduced over several decades ago, fire-resistance rated ceiling assemblies aren’t a new concept to the construction industry. But let’s take a moment to refresh our knowledge.

A fire-resistance rated ceiling assembly is a complete, coordinated system of ceiling components. This system consists of the ceiling system, lighting, audio fixtures, HVAC penetrants through the ceiling, the plenum, structural system, subfloor, and finish floor.  Essentially, a fire-resistance rated ceiling is treated as one whole entity. Therefore, for the ceiling to offer a proper fire rating, it needs to be tested and certified as a whole when meeting specific fire-resistance standards.

What are the testing standards of a fire-rated ceiling assembly?

Local building codes, which require life safety hazards to be addressed, rely on two ratings to evaluate the compliance of the fire-rated ceiling assembly.

Flame Spread Rating

This test measures the propagation of a flame away from the source of ignition across the surface of a material or assembly. Additionally, there will be an evaluation of the potential for spreading flames in the event of a fire.

Fire Resistance Rating

This test determines the ability of a material, product, or assembly to withstand a fire and provide protection on the non-fire side for a period of time. (This is where the one- or two-hour fire rating comes into play).

To learn more information about proper testing and approvals for fire-resistance rated ceiling/floors, please connect with Underwriter Laboratories (UL) or Intertek (ETL).

The Purpose of Fire-Resistance Rated Ceilings

Once a fire-rated ceiling assembly has received its proper tests and approvals, it can now seamlessly be integrated into its specified application(s). But what is the purpose of these assemblies?

Prior to the integration of fire-rated ceilings, the structural integrity of a building is vulnerable to the effects of a fire outbreak. Why? With the exposure of flames, high temperatures, and smoke, certain building materials could not withstand these elements. Because of this, the building itself and its occupants are in danger of rapid fire spread, premature structural failure, and limited time to evacuate safely.

Because it can resist fire exposure for one to two hours (depending on the assembly’s rating), a fire-rated ceiling helps compartmentalize a building and slow fire spread both vertically and horizontally. This performance can buy critical time for occupants to evacuate and for first responders to arrive and suppress the fire.

Where are fire-resistance rated ceiling assemblies required?

Now that we’ve covered the purpose of fire-resistance rated ceilings, it’s easier to understand where these assemblies are required. Because they’re designed to extend evacuation and response time, fire-rated ceilings are most often specified in buildings where occupants may need additional time to exit safely. Common applications include but aren’t limited to:

• Multi-Family
• Healthcare Facilities and Hospitals
• Assisted Living Facilities
• Data Centers
• Educational Building, K12 and Higher Education
• Mixed-Use Spaces

Please check with your local jurisdiction to see what construction applications and building types require fire-resistance rated ceiling/floor assemblies.  

Addressing the Challenges in Fire-Rated Ceilings

Earlier we addressed that for a ceiling to have a fire rating, the whole assembly needed to undergo proper testing procedures. Therefore, when architects specify properly tested and approved fire-rated ceiling assemblies – the rating will be intact. And yes, this is true – until contractors start cutting out openings for the ceiling’s recessed fixtures.

Once penetrated, the ceiling is deemed as compromised and the fire rating is no longer valid. Why?  As we previously addressed, the assembly gains its fire rating as a whole – but what happens when you take out parts of that whole? Well, it means there are holes (quite literally) in the ceiling’s ability to perform in a fire.

Unfortunately, this hazard is commonly overlooked. When penetrating a fire-resistance rated ceiling, contractors aren’t leaving a noticeable opening. Often, they fill the opening with a recessed light fixture or loudspeaker – making the opening hidden from a visual view in plain sight.

But in the scenario of a fire outbreak, the recessed light fixture or loudspeaker can melt in a matter of minutes – leaving the opening wide open. Once fully melted, flames, heat, and smoke can accelerate throughout the building – defeating the purpose of a fire-rated ceiling.

Meeting Local Building Code Adoptions

By recognizing this often-overlooked hazard, building code professionals have collectively decided to adopt several requirements to address this issue.

To protect the lives and properties within our communities, the International Building Code addressed in section 714.5.2 of the 2018 IBC:

“Where floor/ceiling assemblies are required to have a fire-resistance rating, recessed fixtures shall be installed such that the required fire resistance will not be reduced.”

With the establishment of this code adoption, construction professionals are now required to address this situation in their fire-rated ceiling assemblies. But the next question is – how?

How Are Architects Resolving Unprotected Openings?

As the IBC states, construction professionals are required to install a fire-rated solution within each opening to reinstate the fire rating of the ceiling assembly. Over the past several years, various forms of “fire-rated” solutions have entered the landscape. Unfortunately, some of these solutions brought along some challenges.

One of the biggest challenges architects faced when installing these solutions, such as fire-rated recessed lights, is compromising their lighting design. By having to use fire-rated lights, architects are limited in their control on the light’s lumen output, its design, and its overall aesthetic. In addition, another challenge architects faced were a majority of these “fire-rated” solutions are not actually properly fire-tested; defeating the purpose of installing these installations. Ultimately, leaving the architects with a power struggle between compliance and aesthetic.

Tenmat’s Fire Rated Covers for Unprotected Openings

Formulated to accommodate a wide range of recessed fixtures, regardless of model or manufacturer, Tenmat’s Fire-Rated Covers offer a solution to the challenges of other fire-rated solutions. With its ability to be highly compatible, architects will no longer have to sacrifice their design details for compliance.

In addition, Tenmat’s Fire Rated Covers have all undergone proper testing and approvals by third-party testing laboratories. With these approvals, Tenmat Fire-Rated Covers can seamlessly be integrated into a wide range of applications and meet even the most stringent building code requirements.

Explore Tenmat’s Full Range of Tested and Approved Solutions for Unprotected Openings.

Key Takeaways

When it comes to compliance and design, there should only be a balance – not a sacrifice.  By using a fire-rated solution, such as a Tenmat Fire-Rated Cover, architects and contractors can easily reinstate their compromised fire-resistance rated ceiling without compromising the light design they envisioned. If you are interested in learning more about unprotected openings in fire-resistance rated ceiling assemblies, Tenmat USA does offer a free ICC-accredited course, which gives a brief overview of this life safety hazard. If you are interested, you can sign up here.