Start With The Existing Roof
Commercial Re-Roofing in San Francisco, CA begins with a structural load check. Before any tear-off is priced, the building's roof deck capacity must be verified against the weight of the proposed new assembly — new insulation, cover board, membrane, ballast if applicable, and any required drainage improvements. For commercial re-roofing in San Francisco, the code also controls how many membrane layers can remain on the deck: most jurisdictions follow the two-layer maximum specified in the International Building Code, which means full tear-off may be required even when the top membrane looks serviceable.
Access And Operations Come First
Before crews mobilize, we verify how Commercial Re-Roofing planning affects tenants, loading, elevators, pedestrian controls, rooftop equipment, service paths, and daily dry-in needs. That keeps the scope tied to the building instead of a generic material list.
Repair, Recover, Coat, Or Replace
The practical answer depends on moisture, deck condition, slope, membrane compatibility, code triggers, edge metal, drainage, and how much disruption the building can tolerate. We document those items so ownership can compare a near-term fix with a longer lifecycle option.
Clear Closeout Records
A useful roof file includes photos, observed conditions, access assumptions, repair priorities, warranty notes when applicable, and the next maintenance checkpoint. The goal is a decision record that still makes sense after the crew leaves.
Questions About Commercial Re-Roofing
What changes the scope?
Access, wet insulation, deck repairs, edge metal, drain work, occupied-building constraints, disposal, and code documentation can all change the final path.
Can the building stay occupied?
Often, yes. The scope still needs rules for loading, noise, odors, tenant notices, daily dry-in, and emergency contact responsibilities.
When is coating realistic?
A coating is realistic only when the roof is dry, cleanable, compatible, properly detailed, and still structurally sound.
What should ownership receive?
A usable roof file should include photos, observed conditions, assumptions, near-term repairs, capital triggers, and the recommended next step.