Business Details
50+ Years
experience
Emergency
services
Trusted Construction Solutions Since 1909
Krez Group has been delivering high-quality construction solutions since 1909, combining decades of industry expertise with a commitment to innovation and customer satisfaction. Our family of specialty subcontracting companies, including Barrier Corp., Spray Insulations, Inc., and John Caretti & Co., provides tailored services to meet diverse project requirements across the construction industry. With a legacy built on trust, reliability, and technical excellence, we prioritize safety, precision, and transparency in every project we undertake. Our team of seasoned professionals leverages advanced technologies and proven methodologies to ensure optimal results, whether addressing complex flooring challenges, fireproofing needs, or industrial insulation requirements.Backed by strong partnerships with leading manufacturers and a dedication to continuous improvement, we serve as a trusted partner for clients seeking dependable, end-to-end construction solutions. Our financial stability, evidenced by long-standing relationships with institutions like American Community Bank, ensures we deliver consistent performance even in dynamic market conditions. From initial consultation to project completion, we emphasize collaboration, accountability, and adherence to the highest standards of craftsmanship.
Services
Floor Leveling
Terrazzo Installation
Fireproofing
Spray Foam Insulation
Concrete Moisture Mitigation
Details
- Year established: 1909
Highlights and features
- We offer over 115 years of combined experience across our specialty construction divisions.
- Our team implements patented flooring leveling systems for precision results.
- We maintain a 100% project completion rate with zero safety violations since 2010.
- Our companies partner with top manufacturers like Isolatek International and GCP Applied Technologies.
- We provide 24/7 emergency project support for critical construction needs.
What people say
Perfect project execution
Most thorough submittal package
Professional competent application
Outstanding community project
Instrumental in project success
Services
Floor Leveling
Barrier Corp. provides engineered floor leveling solutions using high-strength gypsum concrete to meet precise tolerances from 1/8" to 1/2" per 10 feet. Our process includes free site surveys, grid-based thickness calculations, and post-pour verification to ensure compliance with project specifications. This service addresses uneven substrates in both new construction and renovation projects.
Terrazzo Installation
John Caretti & Co. specializes in custom terrazzo installation using 3/8" thin-set systems with unlimited color options and natural/exotic aggregates. Our process combines traditional craftsmanship with modern techniques to create durable, decorative flooring solutions for commercial and residential applications across Chicagoland.
Fireproofing
Spray Insulations, Inc. offers cementitious, mineral fiber, and intumescent fireproofing solutions for structural steel protection. Our certified applicators use products from leading manufacturers like Isolatek International to meet fire resistance requirements while maintaining architectural aesthetics and structural integrity.
Spray Foam Insulation
We provide open-cell and closed-cell polyurethane spray foam insulation for thermal and acoustic control. This high-performance solution creates continuous air barriers, fills complex voids, and offers vapor resistance while maintaining compatibility with diverse building materials and designs.
Concrete Moisture Mitigation
Barrier Corp. installs advanced moisture mitigation systems that prevent flooring failures from concrete vapor emissions. Our solutions include proprietary chemical treatments and barrier membranes that provide up to 25-year warranties against moisture-related damage in fast-track construction projects.
People
Paul J. Krez
Founder
German immigrant who established the company in 1909 after working at Mundet Cork Company. Pioneered mechanical insulation contracting in Chicago's early 20th-century construction boom.
John Krez
President
Succeeded Paul J. Krez in 1925, expanding the company's insulation services during Chicago's interwar construction period. Maintained family leadership through the Great Depression.
Leonard Krez
President
Led the company from 1955-1974, overseeing post-war growth and diversification into new construction specialties while maintaining core insulation competencies.
Paul J. Helmer
President
Managed strategic acquisitions from 1974-1994, including Spray Insulations Inc. in 1965 and Barrier Corp. in 1981, forming the foundation for Krez Group's modern structure.
Paul K. Helmer
President
Current leader since 1994 who rebranded the organization as Krez Group in 2010, consolidating specialty companies under a unified brand while maintaining individual operational identities.
Questions
What construction specialties does KREZ GROUP offer?
We provide flooring solutions, fireproofing, spray foam insulation, terrazzo installation, and concrete moisture mitigation through our subsidiary companies.
How long has KREZ GROUP been in business?
Our companies have over 115 combined years of construction industry experience, with individual entities established between 1884 and 2000.
Do you offer safety-certified installation crews?
Yes, all our technicians receive manufacturer-certified training and follow strict OSHA-compliant safety protocols on every job site.
Can you handle large-scale commercial projects?
We have $10M single-project bonding capacity and experience executing complex assignments for Fortune 500 companies and major institutions.
What geographic areas do you serve?
While headquartered in Chicago, we operate throughout the Midwest and provide nationwide specialty subcontracting services as needed.
How do I request project consultation?
Contact us at 847-581-0017 or through our website to schedule a free site assessment with one of our construction specialists.
