Your most important
inside job.
Buildings get their strength from the inside — and protecting them starts there, too.
Fireproofing keeps the frame standing when it counts.
The skeletons of steel-frame buildings are protected with fireproof coatings that keep the frame from buckling and collapsing in a high-intensity fire. You want experts performing such a vital job.
Wilkin Insulation is one of the largest and most successful fireproofing contractors in the Midwest and a nationally recognized expert in the fireproofing industry. Architectural and design firms, general contractors and construction managers come to us for help with code compliance.

What we apply
Spray-Applied Fireproofing
Fire protection for structural steel columns, beams, joists and roof/floor decks, applied to the specified fire-resistance design.
Commercial Spray-On Insulation
Spray-applied thermal and acoustical insulation for exposed decks, walls and ceilings in commercial and industrial spaces.
Code-Compliance Support
Guidance for architects, GCs and CMs on materials and methods that meet the specified ratings and local code.
New Construction
Coordinated scheduling with your GC so fireproofing keeps pace with steel erection and the trades that follow.
Renovations & Repairs
Patching and re-application of fireproofing disturbed by renovation, tenant build-outs and MEP work.
Inspection-Ready Work
Applications documented and performed to independent testing agency guidelines, ready for special inspection.

It’s what we do — and we’re great at it.
Our plasterers, carpenters and laborers concentrate exclusively on applying fireproofing materials.
- Extensively trained and certified by the manufacturers of every product we apply
- They know these materials inside and out — so your building is safe from the inside out
- Estimators, sales, project managers, superintendents, foremen and laborers for any size job
- Applied to the highest industry standards under recognized independent testing agency guidelines
From bid to final inspection
Estimate & Review
Our estimators review drawings, specified designs and code requirements to price the job accurately.
Plan & Schedule
Project managers coordinate sequencing with your GC so we’re on site exactly when you need us.
Apply
Certified union crews apply materials to manufacturer requirements under experienced superintendents.
Inspect & Close Out
Work is ready for independent inspection — thickness, density and bond — and your project stays on budget.
Fireproofing questions, answered
What is spray-applied fireproofing?
Spray-applied fire-resistive material (SFRM) is a cementitious or fiber-based coating applied to structural steel. In a fire it insulates the steel, slowing how fast it heats up so the frame keeps its strength — and the building stays standing — for the rated period required by code.
How is the required thickness determined?
Thickness is set by the tested fire-resistance design specified for each assembly and the hourly rating required by the building code. We apply every material to the manufacturer’s requirements and the specified design, and verify thickness as we go.
Is the work inspected?
Yes. All applications are performed in accordance with the highest industry standards and under the guidelines of recognized independent testing agencies. On most commercial projects, third-party special inspectors verify thickness, density and bond.
Can you help with code compliance during design?
Absolutely. Architectural and design firms, general contractors and construction managers come to Wilkin for guidance on code compliance. Bring us in early and our estimators can help you choose the right products and approach.
What size projects do you handle?
Any size. Our team of estimators, project managers, superintendents, foremen and laborers is ready for everything from a single tenant build-out to a 50-story high-rise.
Need fireproofing on your next project?
Contact us today to put Wilkin’s insight to work on your most important inside job.

