Business Details
46 Years
experience
Emergency
services
Trusted Commercial Roofing Solutions in Fresno, CA
GC Roofing has been a trusted name in the roofing industry since 1980, dedicated to delivering exceptional service, craftsmanship, and community engagement. Founded by Gerry and Carol Thiesen, our company began as G & C Enterprises and has evolved into a family-owned business led by Josh and Brandy Thiesen. With over 45 years of experience, we specialize in commercial and industrial roofing solutions, including metal roof systems, fabric-reinforced coatings, elastomeric coatings, and single-ply membranes. Our commitment to innovation is evident in our early adoption of metal restoration systems and partnerships with industry leaders like Polyglass and IB Roof Systems.We prioritize ongoing training and technological advancements to ensure our team remains at the forefront of roofing expertise. Our preventative maintenance programs help property owners extend roof longevity while minimizing costs. Recognized for our integrity and customer-centric approach, we serve clients across California, offering tailored solutions for diverse roofing needs. Our mission remains rooted in serving people, investing in our employees, and contributing to the communities we operate in.
Services
Metal Roof Systems
Fabric Reinforced Coatings
Elastomeric Coating Systems
Single Ply Roofing
Preventative Maintenance
General Contracting
Details
- Year established: 1980
Highlights and features
- We offer 45 years of specialized roofing expertise across California.
- Our family-owned business prioritizes integrity and long-term customer relationships.
- We implement energy-efficient, cost-saving roofing technologies.
- Our preventative maintenance programs extend roof lifespan significantly.
- We provide 24/7 emergency leak repair services for urgent needs.
What people say
Professional company
Excellent work
Top-notch service
Impeccable communication
Quick execution
Services
Metal Roof Systems
Our metal roof systems provide complete waterproofing solutions that inhibit rust, stop leaks, and deliver energy-efficient finishes. Using fabric reinforcement and premium coatings, we strengthen seams and fasteners while preserving existing structures. These systems extend roof life significantly at a fraction of replacement costs, with energy savings from reflective coatings reducing cooling expenses by up to 30% annually.
Fabric Reinforced Coatings
Fabric-reinforced coatings combine liquid-applied membranes with single-ply strength for superior leak resistance. The reinforced fabric adds tensile strength without extra weight, while reflective white coatings reduce heat absorption. This system offers durable protection against weather extremes and potential 30% annual cooling cost savings through energy-efficient design.
Elastomeric Coating Systems
Elastomeric coatings create seamless, leak-resistant barriers that extend roof life through reflective white finishes. Designed for energy efficiency, these coatings can reduce cooling costs by up to 30% annually. Available with 10-year material warranties, they provide durable protection against UV radiation and weather damage for various roof types.
Single Ply Roofing
Our single-ply PVC roofing membranes offer high-performance solutions for diverse applications. Available in 50-80 mil thicknesses with multiple reinforcements, these systems provide durable waterproofing with up to 30-year material warranties. Designed for easy installation across various substrates, they deliver long-term protection against environmental stressors.
Preventative Maintenance
Our preventative maintenance program includes comprehensive inspections, debris removal, and targeted repairs to extend roof longevity. Technicians check drains, flashings, and penetrations while providing detailed reports with photos for budget planning. Regular maintenance helps avoid premature replacement and ensures optimal roof performance through proactive issue resolution.
People
Josh Thiesen
Owner
Josh Thiesen leads GC Roofing with over 20 years of industry experience, continuing the family legacy established by his father Gerry. He focuses on operational excellence and client relationships.
Brandy Thiesen
Owner
Brandy Thiesen co-owns GC Roofing, overseeing business operations and strategic growth while maintaining the company's commitment to quality and community service.
Gerry Thiesen
Founder
Gerry Thiesen founded the company in 1980, pioneering metal restoration techniques before industry standardization. His legacy continues through innovative practices and family leadership.
Carol Thiesen
Co-Founder
Carol Thiesen co-founded the business with Gerry in 1980, establishing foundational values of integrity and customer service that remain central to GC Roofing's operations.
Kristen
Customer Service Manager
Kristen manages client communications and project coordination, recognized for exceptional service and detailed reporting that enhances client satisfaction across managed properties.
Questions
What types of roofing systems do you specialize in?
We specialize in metal roof systems, fabric-reinforced coatings, elastomeric coatings, and single-ply membranes for commercial and industrial properties.
Do you offer emergency roof repair services?
Yes, we provide 24/7 emergency leak repair services with rapid response for urgent roofing issues.
What preventative maintenance programs are available?
Our preventative maintenance includes annual/bi-annual inspections, debris removal, seam repairs, and detailed reporting to extend roof lifespan.
Are financing options available for roofing projects?
Currently, we do not offer financing options but provide detailed cost estimates for budget planning.
Which areas do you serve?
We serve commercial and residential clients across California, including Fresno, San Diego, and Santa Maria regions.
What warranties are offered on roofing systems?
Warranties vary by system: 10-year material warranties for coatings and up to 30-year warranties for single-ply membranes.
