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Washington & Alaska's Union Mechanical Insulation and Firestop Professionals
Certified FRMA Firestop Professionals
Union Trained. State Approved. Contractor Ready.
Heat & Frost Insulators Local 7 and our Contracting Partners are Washington State's leading providers of trained Fire Resistive Material Applicators (FRMA) and Firestop professionals. Our members install fire resistive materials, firestop systems, passive fire protection assemblies, and other critical life-safety systems in commercial, industrial, healthcare, educational, and public facilities. When owners, architects, engineers, and general contractors need a workforce trained beyond minimum requirements, they turn to Local 7 and our Contracting Partners for highly skilled Firestop and FRMA professionals who deliver code-compliant installations, superior workmanship, and enhanced life-safety protection.
Union Trained Skilled Firestop Workers trained in systems, materials and field installationContractor Ready
Signatory contractors prepared to support projects across Washington.Firestop Is Life Safety Work
- Properly installed firestop systems help maintain the fire-resistance rating of walls, floors, joints, and penetrations. This work plays a critical role in limiting the spread of fire, smoke, and toxic gases through a building.
What is FRMA?
- Fire-Resistant Materials Applicator. In Washington State, 24-hour certified FRMA workers are shown the basics to install firestop systems and fire-resistant materials in accordance with approved systems, project specifications, and applicable code requirements.
Why Union Trained and Certified Firestop Matters
While Washington State requires a minimum of 24 hours of approved training for Fire Resistive Material Applicators, Local 7 sets the industry standard through the State's only registered Firestop Apprenticeship Program. Every Local 7 Firestop Journeyman has successfully completed this rigorous three-year apprenticeship, combining extensive classroom instruction, hands-on training, manufacturer-specific certifications, and real-world field experience.
Training does not end upon completion of the apprenticeship. To maintain and advance their knowledge, Local 7 Firestop Journeymen are required to complete a minimum of eight hours of continuing education annually. This ongoing training ensures our members remain current with evolving building codes, industry standards, installation methods, manufacturer requirements, and emerging fire protection technologies.
Life Safety FocusedFirestop protects rated assemblies and helps limit fire and smoke movement.
Hands-On TrainingMembers receive practical training focused on real-world installation.
Code AwarenessWorkers understand the importance of approved systems and documentation.
Project Ready
Our workforce and contractors are ready to support job site needs.
General Contractors & Building Owners
If your project requires Washington State certified FRMA workers, Local 7 can help connect you with signatory contractors who are trained, certified, and ready to perform firestop work.
- Commercial construction
- Hospitals and healthcare facilities
- Schools and public buildings
- Industrial facilities
- Marine and waterfront projects
- Public works and infrastructure
Need Certified FRMA Firestop Workers?
Contact Local 7 Heat & Frost Insulators and Firestop Workers to learn more about Washington State certified FRMA members and signatory contractor availability.
Local 7 Heat & Frost Insulators and Firestop WorkersCertified workforce. Skilled contractors. Firestop done right.
Email Local 7 About FRMAMechanical Insulation • Firestop • Apprenticeship • Energy Conservation • Certified FRMA WorkforcePaused
Who We AreOur Local Union is made up of hardworking men and women who understand the value of skilled craftsmanship, workplace rights, and professional excellence. We are committed to providing the best-trained and most highly skilled Mechanical Insulators and Firestop professionals throughout Washington State and Alaska.
Local 7 is its membership. Our members have a voice in the direction of the union through democratic participation, including the election of leadership and the ratification of the collective bargaining agreements under which they work. Together, we are building a stronger workforce, a stronger industry, and a stronger future for our members and their families.
What We DoMechanical Insulation
Mechanical insulation is the only building product that pays for itself. From industrial facilities to commercial construction projects, Heat and Frost Insulators and Allied Workers are experts in insulating mechanical systems that improve energy efficiency, reduce operating costs, and enhance system performance. We insulate thermal piping, HVAC systems, domestic water lines, and cryogenic systems, while also providing freeze protection, condensation control, sound attenuation, and personnel protection. As Energy Conservation Specialists, insulation is the first and most effective step toward reducing energy consumption and improving building performance.
Firestop Containment Workers
Our Firestop Containment Workers specialize in the installation of firestop systems and passive fire protection assemblies that help save lives and protect property. Local 7 Firestop professionals understand the importance of installing firestop materials as a complete tested system to maintain the integrity of fire-rated walls, floors, and assemblies. Our Firestop workforce is 100% trained and fully compliant with Washington State Fire Resistive Material Applicator (FRMA) requirements, ensuring code-compliant installations that enhance life safety and building protection.
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Latest News
We will be setting up at the park at 9am. Please feel free to come early and stay late. Other activities not listed on the Flyer; we have booked Brother Ahmed Lindsey's Ice Cream truck for the third year and Brother Ulysses Chaves's bouncy house for the second year.
Brothers and Sisters, Limited spots available for the 2026 Local 7 Memorial Golf Tournament. Get your team together and call Nicole at the Union Hall to Sign up! 100% of the tournament proceeds benefit the Wayne J Nettekoven Memorial Scholarship Fund. A huge THANK YOU to the tournament sponsors.
Download:
Wayne J Nettekoven Memorial Scholarship.pdf
Youturn Health provides free, confidential support to members of the International Association of Heat and Frost Insulators and their families to help with challenges like stress, depression, anxiety, grief, substance use, and thoughts of suicide.Upcoming Events 
Observed day off; 4th of July
Jul 03, 2026Observed day off for 4th of JulyCE Make up
Jul 08, 2026Local #7 Training facility, Renton Technical CollegeUnion Meeting
Jul 10, 2026Large Auditorium in the Teamsters Building 14675 Interurban Ave S Tukwila, WA 98168Union Meeting
Aug 14, 2026Large Auditorium in the Teamsters Building 14675 Interurban Ave S Tukwila, WA 98168Continued ed
Sep 11, 2026Local #7 Training facility, Renton Technical College, Bldg. L room 101Contact Elected Officials! Important Links
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