Credentials that set us apart.
Our certifications aren't badges — they're proof of training, expertise, and accountability. In roofing, the best credentials aren't bought; they're earned. Here's what each of ours means for your home.
- GAF Master Elite — Top 3% nationally
- Owens Corning Platinum — <1% qualify
- HAAG Certified Inspector
- DaVinci, CertainTeed, Firestone & IB Roof
- BBB A+ · Licensed & Insured since 1984
Why our certifications matter to you.
In roofing, certifications aren't given — they're earned. Each credential below represents rigorous training, proven expertise, and a commitment to the highest standards. Choosing Reasonable means choosing a contractor vetted, tested, and approved by the industry's most respected manufacturers and organizations.
Owens Corning Platinum Preferred Contractor
The highest level of certification offered by one of America's most trusted roofing manufacturers. You can't buy it — it's earned through demonstrated excellence, extensive training, and a proven track record of quality roof installations, plus strict standards for business excellence, licensing, insurance, and customer satisfaction.
- Owens Corning's most comprehensive warranty, including the exclusive System Warranty
- Priority access to the full line of premium Owens Corning products
- A demonstrated history of customer satisfaction and quality workmanship
- Continuous training on the latest installation techniques and product innovations
- Verified business credentials and full insurance coverage
GAF Master Elite™ Contractor
The gold standard of roofing certifications. As North America's largest roofing manufacturer, GAF sets the benchmark for quality — and Master Elite™ is the highest level a contractor can achieve, requiring exceptional business practices, proper licensing and insurance, ongoing training, and consistently superior service.
- Golden Pledge® Warranty — up to 50 years on materials and workmanship
- Non-prorated coverage that keeps its full value for the life of the warranty
- GAF stands behind our work with their factory seal of approval
- Rigorous installation standards, so your roof is done right the first time
- Peace of mind from a contractor trusted by America's #1 roofing manufacturer
DaVinci Masterpiece™ Contractor
DaVinci Roofscapes makes the most realistic and durable synthetic slate and shake roofing in the world. The Masterpiece™ certification is reserved for professionals who've proven the specialized skills these premium systems demand — extensive hands-on training and a real eye for detail.
- Specialized training in high-end composite slate and shake installation
- Proven capability with architectural and historically accurate roofing
- Direct access to DaVinci's complete line of luxury roofing products
- Extended lifetime warranty coverage on premium systems
- The precision and attention to detail luxury installations require
CertainTeed Master Shingle Applicator
CertainTeed's Master Shingle Applicator program is the highest level of installation expertise this industry-leading manufacturer recognizes — mastery of proper technique across their full product line, earned through rigorous training and a documented commitment to quality workmanship.
- SureStart PLUS enhanced warranty protection with extended coverage
- Installation that follows strict manufacturer guidelines and best practices
- Full access to the Landmark, Presidential, and Grand Manor collections
- In-depth knowledge of CertainTeed's complete roofing-system components
- Direct backing from one of the industry's most trusted names
HAAG Certified Inspector
HAAG Engineering provides the most respected roof-inspection training in the industry — the standard for forensic inspections, recognized by insurers, legal professionals, and manufacturers. Certification demands extensive classroom training, field experience, and a comprehensive exam covering storm-damage assessment and documentation.
- A recognized authority for assessing storm damage and processing insurance claims
- A scientific approach to identifying hail, wind, and other roof damage
- Thorough, professional inspection reports accepted by all insurance companies
- Expert ability to identify and document weather-related roof damage
- Honest evaluations of whether a repair or full replacement is actually needed
Better Business Bureau A+ Rating
The BBB's A+ is the highest grade possible — the pinnacle of trustworthiness, ethics, and customer satisfaction. Unlike certifications you can buy, BBB ratings are earned over time, and ours reflects 42 years of honest business, prompt service, and resolving any concern quickly and fairly.
- 42 years of ethical business practices and customer satisfaction
- A demonstrated commitment to addressing and resolving customer concerns
- Operating with honesty, integrity, and clear communication
- Licensed and insured, with business credentials independently verified
- A long-standing, trusted reputation in the Michigan community
Firestone Building Products Certified Contractor
Firestone Building Products is a leading manufacturer of commercial roofing systems, and their certification ensures contractors meet strict standards for technical expertise and installation quality — proof we can handle commercial and flat roofing with precision.
- Proven expertise in flat and low-slope commercial roofing systems
- Certified installation of advanced TPO & EPDM membrane systems
- Access to Firestone's comprehensive warranty programs
- In-depth understanding of commercial roofing requirements
- Installation that follows strict manufacturer specifications
IB Roof Systems Authorized Contractor
IB Roof Systems makes some of the highest-quality commercial roofing membranes available, known for exceptional durability and energy efficiency. As an authorized contractor, we've proven the technical expertise these premium systems require.
- Trained in the proper installation of premium IB membrane systems
- Roofing engineered for exceptional long-term durability
- Energy-efficient systems that can lower building cooling costs
- Environmentally responsible roofing options
- Manufacturer-backed performance you can count on
Dual-elite, and licensed since 1984.
Holding both GAF Master Elite and Owens Corning Platinum Preferred is rare — most contractors hold one, many hold neither. Add specialty, commercial, and forensic-inspection certifications on top, and you get the strongest warranties in the trade, installed by a team the manufacturers themselves trust. Fully licensed and insured in Michigan, accredited A+ since 1984.
See the standard for yourself.
Get a free, no-obligation estimate from Michigan's dual-elite certified exterior team — and put these credentials to work on your home.