Fireproofing & Insulation Contractor in Boulder, Colorado
Andrex Insulation provides commercial fireproofing and insulation services for Boulder's university campuses, federal research facilities, tech offices, and mixed-use developments. Just 30 minutes from our Denver headquarters, we have been protecting Boulder's most important structures since 1988.
Why Boulder Construction Demands Expert Fireproofing
Boulder, Colorado is one of the most distinctive construction markets along the Front Range. Nestled against the Flatirons at an elevation of 5,430 feet, the city combines a booming tech economy, a world-class research university, and some of the strictest building codes in the state. For general contractors and developers building in Boulder, fire protection is not an afterthought — it is a critical path item that requires an experienced, reliable subcontractor who understands the local landscape.
The University of Colorado Boulder is one of the largest drivers of commercial construction in the city. CU's campus is in a continuous state of expansion and renovation, with new academic buildings, research laboratories, residence halls, and athletic facilities regularly going vertical. Every one of these steel-frame structures requires spray-applied fireproofing on structural members, firestopping at penetrations through fire-rated assemblies, and in many cases intumescent coatings on architecturally exposed steel. Andrex Insulation has decades of experience working on institutional projects where schedule coordination, campus access logistics, and occupied-building work are standard considerations.
Boulder is also home to a concentration of federal research facilities that few cities in the country can match. The National Institute of Standards and Technology (NIST), the National Oceanic and Atmospheric Administration (NOAA), and the National Center for Atmospheric Research (NCAR) all maintain significant campuses in and around Boulder. Federal construction projects carry stringent fire protection requirements that often exceed local building codes, including enhanced fire ratings, specialized firestop assemblies, and rigorous documentation and inspection protocols. Our experience with institutional and government-adjacent projects means we understand the level of quality control and documentation these facilities demand.
The city's well-known building height restriction — which limits most structures to 55 feet in the downtown core — shapes the types of construction that happen in Boulder. Rather than high-rise towers, Boulder sees a steady pipeline of mid-rise mixed-use developments, office buildings, and multi-story residential projects. These buildings are predominantly Type II and Type III construction, requiring 1 to 2 hour fire ratings on structural steel. While the buildings may be shorter than Denver's high-rises, the fire protection requirements are no less demanding, and Boulder's building department is known for thorough plan review and rigorous inspections.
Boulder's tech economy has also transformed the construction landscape. Companies including Google, Twitter (now X), Zayo Group, and numerous startups have established offices in Boulder, driving demand for new office campuses and adaptive reuse of existing commercial buildings. Google's expanding Boulder campus alone has generated significant construction activity. These tech-driven projects often incorporate exposed structural steel as an architectural element, which requires intumescent fireproofing coatings rather than traditional SFRM — a specialty that Andrex Insulation has extensive experience with.
Finally, Boulder's commitment to sustainability makes it one of the most LEED-focused construction markets in Colorado. The city has adopted aggressive energy codes and green building requirements, and many private developers voluntarily pursue LEED certification. Andrex has worked on numerous LEED-certified projects, and our team understands how to coordinate fireproofing and insulation work within the documentation and performance requirements of green building programs. Our spray-applied insulation products, including K-13 and Monoglass, help Boulder projects meet thermal performance targets while also providing acoustic benefits.
Fireproofing & Insulation Services in Boulder
Andrex Insulation provides a full range of commercial fire protection and insulation services to Boulder construction projects. Whether your project is a new campus building at CU, a federal research facility, or a mixed-use development on Pearl Street, we have the expertise and crew capacity to deliver on schedule.
Spray Applied Fireproofing (SFRM)
Cementitious spray-applied fireproofing for structural steel beams, columns, and metal decking. UL-classified assemblies with 1 to 4 hour fire ratings using BlazeShield II and Monokote products.
Learn moreIntumescent Fireproofing (IFRM)
Thin-film intumescent coatings that expand under heat to protect exposed structural steel. Ideal for Boulder projects where architects want a clean, painted finish on visible steel elements.
Learn moreFirestopping
Code-compliant firestop systems for penetrations, joints, and openings in fire-rated walls and floor assemblies. UL-listed systems installed per the manufacturer's engineering judgments.
Learn moreSpray Insulation
Spray-applied thermal and acoustic insulation including Monoglass and K-13 for commercial buildings. Helps Boulder projects meet energy code requirements and LEED performance targets.
Learn moreWhy General Contractors Choose Andrex for Boulder Projects
After 38 years and more than 7,500 completed projects across Colorado, Andrex Insulation has the experience, crew capacity, and local knowledge that Boulder general contractors rely on. Here is what makes us the right choice for your Boulder project.
30 Minutes from Denver HQ
Our headquarters on South Acoma Street in Denver is a straight shot up US-36 to Boulder. This proximity means fast mobilization, same-day response to urgent requests, and no travel premiums on your bid. When your steel is up and ready, our crews can be on-site within hours.
University & Institutional Experience
We have extensive experience on university and institutional projects where schedule coordination, campus access restrictions, and occupied-building work add complexity. Our crews understand how to work within these constraints without slowing down your project.
Boulder Building Code Expertise
Boulder's building department is known for thorough plan review and rigorous inspection standards. We understand the local amendments to the IBC, the inspection process, and what Boulder inspectors look for. Our self-testing protocols ensure first-pass approval rates that keep your schedule on track.
LEED Project Experience
We have completed numerous LEED-certified projects across the Denver metro area. We understand the documentation requirements, material specifications, and coordination protocols that LEED-certified projects demand.
Self-Testing Before Inspection
Every area we fireproof is self-tested with calibrated thickness gauges before we call for third-party inspection. This process catches and corrects deficiencies before the inspector arrives, minimizing re-work and protecting your schedule.
Trusted by Colorado's Top GCs
We are a preferred fireproofing subcontractor for DPR Construction, Hensel Phelps, Mortenson, Swinerton, and other leading general contractors who build in Boulder. Our reputation is built on consistent quality, reliable scheduling, and clean closeouts.
Frequently Asked Questions About Fireproofing in Boulder
Do you serve Boulder construction projects from your Denver office?
Yes. Our headquarters is located on South Acoma Street in Denver, approximately 30 minutes from downtown Boulder via US-36. We have been serving Boulder commercial construction projects for decades and regularly mobilize crews to job sites across Boulder County. Our proximity means we can respond quickly to scheduling changes and have crews on-site the same day when needed.
What fireproofing is required for new commercial buildings in Boulder?
Boulder adopts the International Building Code (IBC) with local amendments that can be stricter than the state baseline. Most new commercial steel-frame buildings in Boulder require spray-applied fireproofing (SFRM) on structural steel members, with fire ratings ranging from 1 to 4 hours depending on the construction type, occupancy classification, and height. Boulder's building department is known for thorough plan review and inspections, so working with an experienced fireproofing contractor who understands local requirements is important for avoiding delays.
Can you fireproof historic buildings and renovation projects in Boulder?
Absolutely. Boulder has a large inventory of historic and older commercial buildings, particularly along Pearl Street and in the University Hill area. We regularly perform fireproofing upgrades on renovation projects where existing fire protection needs to be brought up to current code. This includes recoating damaged SFRM, adding fireproofing to previously unprotected steel during change-of-use conversions, and installing firestop systems in penetrations through fire-rated assemblies.
Do you have experience with LEED and sustainable construction projects?
Yes. Boulder is one of the most sustainability-focused construction markets in Colorado, and we have significant experience on LEED-certified projects across the Denver metro area. The fireproofing materials we use, including BlazeShield II and Monokote, contribute to indoor environmental quality and can support LEED credit documentation. We understand the coordination requirements, material specifications, and documentation protocols that LEED-certified projects demand.
What is your typical lead time for a Boulder project?
For most commercial projects in Boulder, we can begin work within one to two weeks of contract execution, depending on crew availability and material lead times. For urgent situations or schedule compression, we have mobilized crews within 48 hours. We recommend reaching out during the steel erection phase so we can coordinate our schedule with your GC and avoid delays once the steel is ready for fireproofing.
Need a Fireproofing Bid in Boulder?
Send us your plans and specs and our estimating team will provide a competitive bid with fast turnaround. We are just 30 minutes from Boulder and ready to mobilize.
Other Service Areas
In addition to Boulder, Andrex Insulation provides commercial fireproofing and insulation services throughout the Colorado Front Range and beyond.
Have a project outside these areas? Contact us to discuss availability and scheduling.