Home / Services / Commercial Roof Repair
Commercial · Fast Documented Response

San Jose

Commercial property managers, building owners, and facility teams call us when something's leaking — or when something's going to leak soon.

Get a Free Estimate (408) 295-8616
Commercial Roof Repair San Jose

Commercial Roof Repair
Done Right Since 1952

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 Roof Repair project by Keith Roofing Company in San Jose
Complete Guide

Commercial Repair Scope and Standards

The Commercial Repair Process

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.

Common Commercial Repair Scopes

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.

Material Compatibility Matters

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.

When to Consider

Signs You Need
Commercial Roof Repair

01

Active Leak in Occupied Building

Commercial leaks affecting tenant operations need immediate response. Every hour of active leak increases damage and operational impact.

02

Visible Damage from Exterior Inspection

Wind damage, impact damage, or visible deterioration noted during routine inspections. Address before it becomes a leak.

03

Recent Storm Event

Post-storm inspection and repair documentation for insurance purposes. Wind damage may not be immediately visible as leaks but documented quickly for claim support.

04

Scheduled Annual/Semi-Annual Maintenance

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.

05

Property Acquisition Inspection

New property acquisition often involves identifying and repairing issues found in inspection. Professional repair documentation supports the property transaction.

06

Insurance Claim Scenario

Storm damage, impact damage, or other insurance-eligible damage requires documented repair scope and coordination with the insurance adjuster.

Repair Scope

Commercial Repair
Approach

TPO Repair Stock

Matched TPO membrane material for heat-welded patches and seam repairs. Multiple thicknesses and color options. Stocked for common manufacturers (Carlisle, GAF, Firestone).

Modified Bitumen Repair Materials

Mod-bit cap sheet and base sheet materials for matching repair. Multiple mod-bit types (APP, SBS) in stock.

Professional-Grade Sealants

Polyurethane sealants (Sikaflex 1a, Vulkem 116) and silicone sealants appropriate for commercial roofing applications.

Self-Adhered Membrane Patches

Ice-and-water shield and self-adhered membrane products for rapid repair situations, particularly storm damage response.

EPDM Repair Products

EPDM patch material, seam tape, and bonding adhesive for EPDM system repairs.

Silicone Roof Repair System

Brushed-grade silicone for small-area coating repairs on aging or coated roofs.

Our Process

How We Handle
Your Commercial Roof Repair

01

Response (Emergency or Scheduled)

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.

02

Assessment & Documentation

On-site evaluation of leak source, scope of damage, and root cause. Photo documentation of pre-repair conditions.

03

Scope & Quote Preparation

Written scope of work describing repair approach, materials, estimated completion time, and cost. For property managers, scope format matches their operational requirements.

04

Repair Execution

Material-matched repair execution following manufacturer specifications for the existing roof system. Proper surface preparation, appropriate repair materials, and professional installation technique.

05

Post-Repair Documentation

Post-repair photos, complete scope description, material specifications, warranty documentation. Packaged for property manager records.

Why Keith Roofing

Why Homeowners Choose Us
for Commercial Roof Repair

01

Rapid Emergency Response

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.

02

Property Manager Operational Fit

Documentation, scope clarity, photo reports, tenant communication, clean billing — standard practice. Property management firms recommend us because we handle the operational side correctly.

03

Material Matching Expertise

Access to TPO, mod-bit, EPDM, and BUR repair materials across major manufacturers. Quick turnaround on less-common material sourcing.

04

Insurance Claim Coordination

For insurance-eligible damage, we document thoroughly and coordinate with adjusters through the claim process. Several California carriers have us as preferred contractors.

Multi-Tenant Office Building — Emergency Leak Response — Keith Roofing Company case study
Featured Project

Multi-Tenant Office Building — Emergency Leak Response

Sunnyvale Commercial

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.

Common Questions

Commercial Roof Repair
Answered

Yes. Long-standing relationships with several Bay Area commercial property management firms. Documented scope, photo reports, and clean billing are standard.
Yes. Damage documentation, scope of work, and adjuster coordination are standard for insurance-eligible repair work. We've worked with most major California commercial carriers.
Same-day during business hours when possible. Next business day for after-hours calls. Emergency tarping can be done after hours when damage is imminent.
Yes. Many property managers have annual or semi-annual maintenance contracts with us. Scheduled inspections, minor repair work, and documentation. Maintenance contracts typically save 30-50% vs. reactive-only care.
Repair addresses specific localized issues on an otherwise-serviceable roof. Replacement is required when widespread failures, major structural issues, or end-of-life conditions exist. We evaluate honestly and recommend appropriately.
We work with TPO, EPDM, modified bitumen, BUR, and silicone-coated roofs. For unusual or specialty systems, we discuss scope and capabilities before committing.
Varies significantly by scope. Simple patch repairs: $500-$1,500. More involved seam restoration: $2,000-$8,000. Major repair scopes with extensive flashing work: $10,000-$30,000+. Emergency tarping: typically $400-$1,200.
Ready to Start?

Get a Free Estimate
for Your Commercial Roof Repair

Every Keith Roofing estimate is free and no-obligation. Call or message us and we'll be in touch within one business day.

Free estimates · No pressure · BBB A+ · CSLB #1118418 · Serving San Jose Since 1952