J & J Roofing Authority LLC is Detroit's trusted local roofing contractor — delivering expert workmanship, honest pricing, and guaranteed results on every job we take on.
Every service backed by our lifetime workmanship guarantee and decades of Detroit roofing experience.
Full tear-off and installation with premium materials — permits, disposal, and cleanup all included.
Fast, lasting fixes for leaks, missing shingles, and damaged flashing. Most repairs same day.
We work directly with your insurance company to streamline claims and restore your roof fast.
Honest, detailed inspections for buyers, sellers, and proactive homeowners. No upsell pressure.
Flat roofs, TPO, EPDM, and metal systems for Detroit commercial properties of all sizes.
Active leak or storm damage? We respond 24 hours a day, every day across metro Detroit.
Four simple steps from your first call to your finished, guaranteed roof. No surprises, no pressure — just honest roofing done right.
Get Started TodayWe assess your roof and provide a written estimate at no charge. No obligation, no pressure — ever.
Review the quote at your pace. Ask every question. The price we quote is the price you pay — always.
Professional crew, clean worksite, most jobs completed in a single day with full cleanup.
Every job backed by our lifetime workmanship warranty. We're not done until you're satisfied.
Four commitments that set us apart from every other roofing contractor in Detroit.
Detroit people serving Detroit people. We're invested in this community and accountable to every homeowner we work with — not a franchise or national chain.
Michigan licensed contractor with full liability and worker's comp coverage. You are completely protected from start to finish on every job we perform.
No surprise fees, no change orders, no fine print. The price we quote is exactly what you pay. Complete transparency from estimate to final invoice.
We're confident enough in our craftsmanship to back it for the life of your roof. Every single job, no exceptions, no excuses.
"J & J replaced our roof after a storm, handled the insurance, finished in one day, and the price was exactly what they quoted. Outstanding work."
"Emergency leak on a Friday night. Had someone out by Saturday morning. Professional, fast, and completely honest about the price."
"Best price of three quotes and genuinely the best workmanship. Crew was respectful, cleanup was perfect. Highly recommend."
Every roof is different — exact number after your free inspection. Here's what Detroit homeowners typically spend.
We respond within a few hours. No obligation, no pressure — just honest answers about your roof.