Business Details
22 Years
experience
Emergency
services
Expert Roofing & Siding Services in McHenry, IL
Gen Ex Construction has been serving McHenry County and surrounding areas since 2004, established by Paul Antonou and David Johnson as a fully licensed and insured business. Our team specializes in residential and commercial roofing, siding, and gutter solutions with a commitment to safety, quality workmanship, and customer satisfaction. We maintain strict safety protocols including job site cleanliness, landscaping protection, and comprehensive documentation of pre-existing conditions. Our 10-year workmanship warranty covers labor errors, and we offer 24/7 emergency services for storm damage.As an Owens Corning Preferred Contractor, we use premium materials sourced through ABC Supply Company. Our team works directly with insurance companies to maximize client entitlements and provides transparent, no-obligation consultations. With an A+ BBB rating and Google Guaranteed status, we combine technical expertise with personalized service to ensure lasting solutions for every property.
Services
Roofing
Siding
Gutters
Emergency Services
Commercial Roofing
Storm Damage Restoration
Insurance Claim Assistance
Gutter Repair
Siding Replacement
Details
- Year established: 2004
Highlights and features
- We work directly with insurance companies to maximize your claim benefits
- 10-year workmanship warranty covering labor errors
- A+ rating with the Better Business Bureau
- 24/7 emergency response for storm damage
- Financing options available for all projects
Associations and certifications
- Google Guaranteed
- Better Business Bureau (BBB)
What people say
Prompt, professional
Excellent job
Highly recommend
Timely manner
Professional staff
Services
Roofing
Our roofing services include residential and commercial roof repair, replacement, and storm damage restoration using premium Owens Corning materials. We handle insurance claims and provide 24/7 emergency response for urgent roof leaks. Our 10-year workmanship warranty covers labor errors while material warranties are provided by manufacturers.
Siding
We offer comprehensive siding repair and replacement services using high-quality materials that enhance property value and weather resistance. Our team handles insurance claims for storm-damaged siding and provides emergency board-up services. Projects include vinyl, wood, and fiber cement siding installation with careful attention to landscaping protection.
Gutters
Our gutter solutions include repair, replacement, and maintenance services to protect foundations from water damage. We address clogged gutters, damaged soffit, and fascia issues while providing emergency repairs for storm-related damage. The Catch-All protection system prevents landscaping damage during installations.
Emergency Services
Available 24/7 for urgent storm damage needs, our emergency services cover roof leaks, fallen trees, and siding damage. We provide temporary repairs, coordinate with insurance companies, and offer same-day inspections. Certified technicians handle hail, wind, and lightning damage with immediate response capabilities.
Commercial Roofing
Specializing in commercial roofing solutions for multi-tenant properties, we handle flat roofs, TPO membranes, and large-scale replacements. Our team works with property managers to minimize business disruption and provides maintenance contracts for ongoing protection. Services include skylight installation and industrial gutter systems.
People
Paul Antonou
Co-Owner
Co-founder with 20+ years of roofing experience, Paul oversees operations and quality control. He works directly with crews on complex installations and ensures adherence to safety standards. Paul maintains relationships with material suppliers and industry partners.
David Johnson
Co-Owner
Co-founder responsible for project management and client relations. David supervises emergency response teams and handles insurance coordination. With extensive storm damage expertise, he ensures timely project completion while maintaining BBB A+ standards.
Greg
Project Manager
Senior estimator with expertise in insurance claims and roof inspections. Greg provides technical consultations, develops repair plans, and educates homeowners about maintenance. He has handled over 500 insurance claims and maintains 98% client satisfaction.
Questions
What areas do you service?
We serve McHenry County and surrounding areas including Crystal Lake, Cary, Algonquin, and Huntley.
Do you handle insurance claims?
Yes, we work directly with all major insurance companies to process claims and maximize your coverage.
What warranties do you offer?
We provide a 10-year labor warranty and manufacturer warranties on materials like shingles and siding.
Are emergency services available?
Yes, we offer 24/7 emergency response for storm damage and urgent roof leaks.
Do you offer financing options?
Yes, we provide flexible financing options for all residential roofing and siding projects.
Are you licensed and insured?
Yes, we are fully licensed and insured with an A+ BBB rating and Google Guaranteed status.
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