Firestop & Sound Caulk

Hilti Firestop Specialty Contractor (HAFSC) & Firestop Contractors International Association (FCIA) Accredited

 

Difiniti is proud to be a Hilti Accredited Firestop Specialty Contractor (HAFSC), delivering certified, high-quality installations you can trust. Difiniti is also one of only two Indiana companies accredited by the Firestop Contractors International Association (FCIA).

Firestop caulking is a critical component of life safety in construction, designed to seal joints, gaps, and penetrations in fire-rated walls and floor assemblies. These systems help contain the spread of fire, smoke, and toxic gases, preserving the integrity of rated barriers and allowing more time for safe evacuation. Proper firestopping must be installed in accordance with tested systems and local building codes.

Image courtesy of Hilti Group, used for illustrative purposes of passive fire protection systems.

Image courtesy of Hilti Group, used for illustrative purposes of passive fire protection systems.

Difiniti offers a comprehensive firestop program designed to support compliance, safety, and project efficiency:

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Manufacturer and office support
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Detailed recordkeeping and reporting
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Installation submittals for all applications
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Field walkthroughs with code officials
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Internal quality control, including selective destructive testing
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Same-day engineering judgments to support field conditions
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Ongoing exposure to the latest products and UL-tested systems

Certified in UL-Approved Systems From Leading Manufacturers:

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Hilti Firestop Systems
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3M Fire Protection Systems
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Specified Technologies Inc. (STI)
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Tremco Fire Protection & Smoke Seal Systems

Training & Certifications:

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FIT (Firestop Instructional Training) Levels I & II
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Manufacturer installation certifications
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Extensive, ongoing training for all installers

Sound Caulking (STC-Rated Systems)

Precision Sealing for Superior Sound Control
At Difiniti, we specialize in high-performance STC-rated sound caulking systems designed to enhance acoustic privacy and meet strict building code requirements. Whether for commercial, healthcare, education, or multi-family construction, our solutions ensure sound transmission is effectively controlled where it matters most.

What Is Sound Caulking?
Sound caulking is a critical component in maintaining the integrity of Sound Transmission Class (STC)-rated wall and floor-ceiling assemblies. It seals joints, penetrations, and gaps that would otherwise allow sound to travel between spaces. Without proper sealing, even the best-designed wall system can fail to meet required acoustic performance standards.

Image courtesy of Hilti Group, used for illustrative purposes of passive fire protection systems.

Why it Matters

Properly installed sound caulking:

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Preserves the full STC rating of assemblies
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Reduces airborne noise transfer between rooms
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Enhances privacy and occupant comfort
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Ensures compliance with architectural specifications and building codes

Our Qualifications Set Us Apart

Difiniti is proud to be STC system knowledgeable and installation-focused specialists, Hilti Accredited Installers, trained in manufacturer-approved methods, and one of only two qualified contractors in Indiana with the expertise to properly install both firestop and STC-rated sound sealing systems to specification.  Our team understands that sound control is not just about materials—it’s about proper installation, continuity, and system integrity.

Why Choose Difiniti?

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Proven experience in code-compliant installations
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Highly trained crews with specialized certifications
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Strong coordination with other trades
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Reliable performance on fast-paced commercial projects
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A reputation for doing it right the first time

Our Scope of Work Includes:

  • Perimeter joints (top-of-wall, bottom-of-wall)
  • Partition intersections
  • Head-of-wall joints (deflection tracks)
  • Penetrations and transitions
  • Drywall-to-structure connections

All work is performed in coordination with UL-listed and ASTM-tested assemblies where required.

 

Industries We Serve:

  • Healthcare Facilities
  • Multi-Family Residential
  • Commercial Office Buildings
  • Educational Institutions

Commitment to Quality & Compliance

We work closely with general contractors, project managers, and inspectors to ensure:

  • Submittals align with project specifications
  • Installations meet or exceed STC requirements
  • Work passes inspection the first time
  • Schedules stay on track