Commercial property managers, building owners, and facility teams call us when something's leaking — or when something's going to leak soon.
Commercial property managers, building owners, and facility teams call us when something's leaking — or when something's going to leak soon. We respond fast, diagnose correctly, and document the work to professional commercial standards: photo reports before and after, scope of work in writing, before-and-after documentation suitable for insurance claims or reserve records, and warranty paperwork that matches how property management operations actually work. Keith Roofing has been doing commercial roof repair for decades, and several Bay Area property management firms have us on their priority response lists.
Commercial roof repair differs from residential in important ways. Operational impact matters — active leaks in commercial buildings can disrupt tenant operations, damage inventory, trigger business-interruption claims, and damage the property manager's relationship with tenants. Repair timing needs to minimize that impact. Documentation standards are higher — scope, photo evidence, insurance coordination, and billing all need to match commercial property management workflows. Material matching is typically more demanding — matching existing TPO, modified bitumen, or BUR systems requires supply relationships and technical knowledge.
Our commercial repair work covers the full range: active leak emergency response with same-day tarping and temporary repair; permanent repair scheduling with property manager coordination; seam and flashing renewal on aging commercial systems; penetration rework at HVAC curbs and roof equipment; insurance claim documentation and coordination; and ongoing maintenance contracts for property portfolios.
Commercial repair scope typically includes: emergency response for active leaks (same-day or next-day depending on severity), permanent repair execution with proper material matching and warranty preservation, documentation including pre-repair photos, scope description, materials used, and post-repair photos, and coordination with property management, tenants, and sometimes insurance adjusters.
For active leaks causing tenant operational impact, speed matters. Our emergency response typically includes tarping or temporary patching within hours of the call during business hours, stabilization of the leak while permanent repair is planned and scheduled, documentation of damage for insurance purposes, and communication with the property manager throughout.
Seam repair on aging mod-bit or TPO: the most common commercial repair we do. Existing seams develop failures over time — adhesive bond failure on mod-bit, weld separation on TPO. Repair involves surface preparation, seam reinforcement with compatible materials, and often polyester fabric embedded for additional strength.
Penetration flashing renewal: HVAC curbs, pipe penetrations, electrical conduit, structural supports — all can develop flashing failures over time. Repair involves removing failed flashing, surface preparation, and installation of new flashing compatible with the existing roof system.
Membrane patching: punctures from foot traffic, mechanical damage, or dropped tools. Repair involves cleaning the area, applying primer where required, and installing a patch of compatible membrane material with proper seaming.
Storm damage repair: wind-driven damage, impact damage from fallen branches, or other storm-related issues. Often involves insurance claim documentation and coordination.
A repair is only as good as the material match to the existing roof. TPO repairs need TPO patches heat-welded with the same membrane type. Modified bitumen repairs need mod-bit-compatible materials. BUR repairs need compatible asphalt products. Using incorrect materials — a common shortcut — creates repairs that fail faster than they should.
We maintain stock of common repair materials and have manufacturer relationships for less-common items. When a specific material match is needed, we typically can source it within 1-3 days.
Commercial leaks affecting tenant operations need immediate response. Every hour of active leak increases damage and operational impact.
Wind damage, impact damage, or visible deterioration noted during routine inspections. Address before it becomes a leak.
Post-storm inspection and repair documentation for insurance purposes. Wind damage may not be immediately visible as leaks but documented quickly for claim support.
Proactive repair and maintenance extends commercial roof life. Property managers with maintenance contracts see 30-50% longer effective roof service life vs. reactive-only approach.
New property acquisition often involves identifying and repairing issues found in inspection. Professional repair documentation supports the property transaction.
Storm damage, impact damage, or other insurance-eligible damage requires documented repair scope and coordination with the insurance adjuster.
Matched TPO membrane material for heat-welded patches and seam repairs. Multiple thicknesses and color options. Stocked for common manufacturers (Carlisle, GAF, Firestone).
Mod-bit cap sheet and base sheet materials for matching repair. Multiple mod-bit types (APP, SBS) in stock.
Polyurethane sealants (Sikaflex 1a, Vulkem 116) and silicone sealants appropriate for commercial roofing applications.
Ice-and-water shield and self-adhered membrane products for rapid repair situations, particularly storm damage response.
EPDM patch material, seam tape, and bonding adhesive for EPDM system repairs.
Brushed-grade silicone for small-area coating repairs on aging or coated roofs.
Emergency leak: same-day response during business hours, next business day for after-hours calls. Scheduled repair: inspection and quote typically within 1-3 business days.
On-site evaluation of leak source, scope of damage, and root cause. Photo documentation of pre-repair conditions.
Written scope of work describing repair approach, materials, estimated completion time, and cost. For property managers, scope format matches their operational requirements.
Material-matched repair execution following manufacturer specifications for the existing roof system. Proper surface preparation, appropriate repair materials, and professional installation technique.
Post-repair photos, complete scope description, material specifications, warranty documentation. Packaged for property manager records.
For active commercial leaks, we respond as fast as practical. Same-day during business hours is typical. After-hours emergency tarping possible when damage is imminent.
Documentation, scope clarity, photo reports, tenant communication, clean billing — standard practice. Property management firms recommend us because we handle the operational side correctly.
Access to TPO, mod-bit, EPDM, and BUR repair materials across major manufacturers. Quick turnaround on less-common material sourcing.
For insurance-eligible damage, we document thoroughly and coordinate with adjusters through the claim process. Several California carriers have us as preferred contractors.
A 45,000 sq ft multi-tenant office building in Sunnyvale developed an active leak over a tenant's conference room during an atmospheric-river storm event. Property manager called at 8 AM Monday; we had a crew on-site by 10 AM. Emergency tarping stabilized the active leak within hours. Detailed assessment over the next two days identified seam failures in three locations on an aging TPO roof, not a single catastrophic failure. We executed permanent seam repairs with reinforcement over the following week. Complete documentation package delivered to property manager for reserves records. Tenant operations returned to normal within days with no documented water damage beyond the initial storm event.




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