Commercial Roofing Contractor in the North Bay
Rea Roofing Inc. works on commercial and new-construction roofs alongside its residential work — low-slope membrane systems, tapered insulation build-ups, standing seam metal, and the mixed assemblies that show up on modern North Bay buildings. The project photographed on this page is exactly that: cover board and insulation being set across the deck of a new concrete structure.
Low-slope roof build-up in progress on a new concrete structure — cover board being set in two-part adhesive ahead of the membrane.
What we bring to a commercial project
Commercial work is a different set of constraints from residential. There is a general contractor's schedule to hit, other trades on the deck, equipment curbs and penetrations that arrive late, and inspections to pass. Being predictable matters as much as being good.
On new construction we work to the drawings and coordinate with the GC on sequencing — dry-in dates, when the deck is available, and how mechanical curbs and penetrations get flashed once equipment lands. Roofing usually sits on the critical path, and a roofer who communicates about it is worth more than one who does not.
On existing buildings the first question is always whether the roof is a tear-off or a recover, and that is answered by what is in the insulation. Wet insulation under a new membrane guarantees a failure and a warranty argument. We check before recommending.
Detailing is where commercial roofs actually leak: parapets, expansion joints, equipment curbs, drains and scuppers, and the constant foot traffic of HVAC service. Walk pads, properly flashed curbs and adequate drainage are not extras on a commercial roof — they are what makes the difference between a roof that lasts and an annual maintenance line item.
How a commercial job runs
- 01
Drawings, site visit or roof survey
For new construction we work from the plans; for existing buildings we survey the roof, the drainage and the condition of what is already there.
- 02
System specification
Membrane or metal system, insulation type and R-value, tapered layout for drainage, cover board, and attachment method for the deck and wind zone.
- 03
Schedule coordination
Dry-in dates and deck access agreed with the GC or building owner, with tenants and other trades factored in.
- 04
Installation
Substrate prepared, insulation and cover board set, membrane installed and seams welded, or metal panels set with clips and formed trim.
- 05
Details, inspection and handover
Curbs, drains, scuppers, parapets and penetrations flashed; the roof walked, inspected and documented at handover.
Working with Rea Roofing on commercial
New construction experience
The portfolio includes large new builds where roofing had to fit a general contractor's schedule, not the other way around.
Membrane and metal in one crew
Modern commercial buildings frequently combine low-slope membrane with standing seam accents. We do both, so the transition is one contractor's responsibility.
Drainage designed properly
Tapered layouts and adequate outlets, because ponding water is the most reliable way to shorten a commercial roof's life.
Licensed and verifiable
CSLB #1133025, verifiable at cslb.ca.gov before you put us on a schedule of values.
Rea Roofing project photos
Our own photographs of real jobs. Captions describe only what is visible in the frame.
Low-slope roof build-up in progress on a new concrete structure — cover board being set in two-part adhesive ahead of the membrane.
Standing seam metal roof on a hillside estate — continuous panels run ridge to eave with a matching ridge cap and hemmed edges.
Commercial Roofing questions
Do you work directly with general contractors?
Yes. A significant part of the portfolio is new construction, including large metal and low-slope projects delivered on a GC's schedule.
Can you re-roof a building while it stays occupied?
Usually, with sequencing. We phase the work so sections are dried in daily, coordinate access and noise with the tenant or building manager, and keep equipment and materials out of the way of operations.
What roof systems do you install commercially?
Single-ply membrane over tapered insulation and cover board, standing seam and other metal systems, and the transitions between them. The specification follows the building, the deck and the wind and fire requirements for the location.
Free estimate — Commercial Roofing
Tell us what the roof is doing and where it is. We will come and look at it, and the inspection costs you nothing.
More from Rea Roofing
Commercial Roofing — free estimate, no obligation
Call or text (707) 332-0081, or send the details through the form. We cover Sonoma, Marin, Napa & Mendocino counties.