At Henris Roofing, we have spent more than 80 years learning how commercial roofs behave under real conditions, and that experience shapes every repair we perform.
Understanding Commercial Roof Failures
Commercial roofs face pressures that residential systems rarely encounter. Large flat and low-slope surfaces collect water, hold heat, and carry rooftop equipment such as HVAC units, exhaust fans, and drainage systems. Each penetration point is a potential source of leaks. Over time, thermal cycling causes membranes to expand and contract, loosening seams and stressing flashing details around parapet walls and curbs.
When we evaluate a commercial roof, we look beyond the obvious leak. A stain inside a warehouse may originate several feet away from where water actually enters, traveling along decking and insulation before it becomes visible. Our diagnostic approach traces the moisture path back to its source so we repair the true cause rather than the symptom, which prevents recurring problems and protects your interior assets.
Roofing Systems We Service
Different building types call for different membrane technologies, and we repair the full range found on commercial properties throughout Petaluma, Penngrove, Novato, Rohnert Park, Cotati, Santa Rosa, & Sonoma, CA. Understanding the material on your roof is essential to selecting the right repair method and compatible sealants.
- TPO and PVC membranes: single-ply thermoplastic systems repaired with heat-welded patches that restore watertight seams without introducing incompatible adhesives
- EPDM rubber roofing: durable membranes where we address seam separation, punctures, and shrinkage using splice tape and cover strips rated for the material
- Modified bitumen and built-up roofing: multi-ply asphalt systems that require torch-applied or cold-applied repairs to reestablish waterproofing layers
- Metal roofing: panel systems where we reseal fasteners, replace failed gaskets, and repair corroded or storm-damaged sections
- Flashing and detail work: reinforcement around curbs, drains, skylights, and parapet walls where the majority of leaks originate
Our Repair Methodology
Every commercial repair begins with a thorough inspection and a free estimate offered with no conditions attached. We document the roof’s condition, note the membrane type and age, and identify all compromised areas rather than the single spot that prompted your call. This gives you a clear picture of what needs immediate attention and what can be monitored.
Once we agree on scope, we prepare the surface meticulously, cleaning and drying the substrate so patches and sealants bond correctly. Compatibility matters enormously in commercial work, and using the wrong product can void manufacturer warranties or fail within a season. As a GAF Master Elite contractor and a ShingleMaster Pro, we adhere to manufacturer specifications on every repair, which preserves system integrity and any active warranties on your roof.
Minimizing Disruption to Your Business
We recognize that a roof repair cannot bring your operations to a halt. Retail stores, medical facilities, manufacturing plants, and office buildings all depend on staying open. We schedule work to fit around your business hours where possible, stage materials to keep walkways and loading areas clear, and coordinate with your facility managers throughout the project.
Cleanliness is part of that respect for your property. We contain debris, protect landscaping and parking surfaces, and remove all waste when the job is complete. When water is actively entering your building, waiting is not an option, which is why we provide 24/7 emergency service to stop leaks before they damage inventory, equipment, or interior finishes.
Energy Efficiency and Sustainable Repairs
Commercial roof repairs present an opportunity to improve building performance. Reflective membrane coatings and properly sealed insulation reduce cooling loads across large flat surfaces, lowering energy costs over the life of the roof. As an Energy Solar Certified and Timberline Solar Roofing Contractor, Henris Roofing can advise on solutions that pair durability with efficiency when your repair scope allows.
Doing our part to remain environmentally responsible means selecting materials and best practices that extend roof life and reduce waste. A well-executed repair delays a costly full replacement, which is both economical and sustainable. Professional, reliable, efficient, and established in the community we serve, we approach every commercial roof as a long-term investment worth protecting. When you are ready to address a problem before it grows, we are ready to help you keep your building watertight and running smoothly.
