Commercial Roofing Contractor Pasadena CA | HP Roofing Pro

Most Pasadena Commercial Roofs Can Be Repaired or Restored - Not Replaced

Pasadena’s commercial building stock is distinct from the warehouse corridors to the south. Medical office parks near Huntington Hospital, the professional buildings of the South Lake business district, the mixed commercial along Colorado Boulevard and Old Pasadena, and the research and institutional properties adjacent to Caltech and the city’s universities all sit under flat or low-slope roofs that need careful, honest maintenance, not a default tear-off.

HP Roofing Pro is headquartered in Alhambra, 10-15 minutes south. We assess your Pasadena commercial roof honestly and recommend the most cost-effective solution, a targeted repair, a cool-roof restoration with our RainArmor system, or a full replacement only when it’s genuinely warranted. We can do all three. We’ll tell you which one your roof actually needs.

📞 Call 909-521-1285 for a free commercial roof assessment in Pasadena.

Request a Free Inspection →

Featured Pasadena Project - CTRL Collective Coworking & Office Space. When every contractor told the manager of this fully occupied 1916 coworking building that the only fix was a complete tear-off, HP Roofing Pro found a smarter path: targeted repairs and a seamless coating that stopped the leaks without shutting the building down. Read the CTRL Collective case study →

Commercial Roof Repair in Pasadena

Most flat-roof problems - active leaks, flashing failures around HVAC units, ponding water, and membrane punctures - can be fixed without replacing the entire roof. HP Roofing Pro provides commercial roof repair for all major systems across Pasadena:

• TPO roofs, seam failures, punctures, and UV degradation on modern medical and office buildings
• PVC roofs, weld repairs, shrinkage correction, and flashing resealing
• Modified bitumen, blister repair and cap sheet replacement on mid-century commercial stock
• Built-up roofing (BUR), gravel-surfaced systems common on older Pasadena institutional buildings
• EPDM and metal roofs, patching, fastener replacement, and coating touch-ups

Here’s why so many “repaired” roofs in Pasadena fail again within months: a contractor spreads asphalt mastic over a wet membrane, the sun cracks it, and the leak returns. HP’s standard is different. We never apply material over a wet membrane. Our commercial roof repairs use a 3-course system - clean and dry the area, apply a base coat, embed a flat-roof repair polyester reinforcement, then seal with a topcoat. The result is measured in years, not months.

For occupied medical and office buildings throughout Pasadena, our sectional approach keeps your tenants and patients working while we repair the roof above them.

Recent Pasadena Project: Good Food Market Re-Roofing

A working example of our honest-assessment approach in Pasadena: the Good Food Market, a 15,000-square-foot supermarket, came to HP Roofing Pro after years of recurring leaks and patches on its distinctive barrel roof, a wood deck topped with multi-ply built-up roofing (BUR) and a granular cap sheet that had lost its reflective granules and waterproofing.

Other contractors might have sold a full tear-off. After a thorough analysis, we found the roof deck was still structurally sound, the only real failure was the waterproofing layer. So instead of an expensive, disruptive tear-off over an operating grocery store, we installed an acrylic-coated cool-roof system directly over the existing membrane: a white, highly reflective surface that waterproofs the building and cuts heat transfer into the sales floor, lowering cooling costs.

The barrel shape added a real challenge, a steep, sloped roof where our crews had to tie off throughout the project for safety, which roughly doubled the timeline of a comparable low-slope job. We planned around it and kept the market open and trading the entire time.

📹 See the full project: Good Food Market Re-Roofing in Pasadena →

The same approach carries across Pasadena’s commercial mix, the medical offices near Huntington Hospital, the older storefronts of Old Pasadena and Colorado Boulevard, and the university-adjacent institutional buildings around Caltech: we assess the deck and the membrane separately, then recommend the least invasive fix that genuinely lasts rather than the biggest invoice.

We took the same approach for The Permit Company, a 9,000-square-foot Pasadena office building with a steep-slope barrel roof. Rather than a costly tear-off, we restored it in place with an acrylic cool-roof system, tying off across the curved roof for safety and keeping the offices open throughout.

RainArmor: Cool-Roof Restoration for Pasadena Commercial Buildings

For Pasadena commercial buildings where a repair isn’t enough but a full tear-off is overkill, our RainArmor cool-roof restoration system is the middle path - a proprietary seamless single-ply system applied straight over your existing roof. No tear-off means no operational shutdown for occupied Pasadena buildings, whether that’s a retail strip on Colorado Boulevard, a professional office in the South Lake district, or an institutional property near Caltech.

Three engineered components:

1. Waterproofing-grade asphalt base - seals and bonds to the existing substrate
2. Stitch-bonded polyester reinforcement - engineered for structural integrity and puncture resistance
3. Two-phase acrylic elastomeric reflective surfacing - meets California Title-24 energy requirements

RainArmor is HP Roofing Pro’s answer to the recurring-patch cycle that costs Pasadena property owners money year after year. The seamless finish eliminates the seams and laps where water finds its way in. Commercial RainArmor installations carry a leak-free warranty from 20 to 30 years depending on the system - transferable to new property owners with notification of ownership change.

As a GAF CoatingsPro(TM) Liquid Applied contractor, Owens Corning Preferred Contractor, and Mule-Hide Warranty Eligible applicator, our Pasadena installations also qualify for manufacturer-backed warranty coverage on qualifying systems.

Preventive Maintenance

Regular inspections and proactive maintenance extend roof lifespan by 10-15 years and prevent the emergency calls that disrupt medical tenants and office operations. We provide documented inspection reports and maintenance schedules for Pasadena property managers.

Additional Services

Beyond repair, restoration, and maintenance, HP Roofing Pro offers Pasadena commercial property owners a full range of roofing services:

• Skylight removal and installation - common on Pasadena’s older institutional and retail buildings
• Solar panel roofing installation - roof preparation and integration for commercial solar projects
• Flat roof repair - targeted repairs for BUR, modified bitumen, TPO, and PVC systems
• Cool roofing - Title-24 compliant reflective systems for energy-conscious Pasadena building owners

All services are performed by HP Roofing Pro crews - licensed (CSLB #1043546), insured, and bonded - operating out of our Alhambra headquarters, minutes from Pasadena.

Why Pasadena Property Managers Choose HP Roofing Pro

Commercial roofing in Pasadena comes with specific demands: older building stock with varied roof systems, occupied facilities that can’t shut down, and a mix of institutional, medical, retail, and professional tenants with different tolerance for disruption. HP Roofing Pro is built for exactly this environment.

• Honest assessment first. We inspect before we recommend. Most Pasadena commercial roofs can be repaired or restored - we’ll tell you which, and why, in writing.
• No unnecessary tear-offs. Our RainArmor system is installed directly over the existing membrane. No disruption to tenants, patients, or customers.
• Documented in writing. Every assessment, every scope, every warranty - written, not verbal.
• Accountability over time. Our commercial leak-free warranties run 20 to 30 years depending on the system, and they’re transferable to new property owners with notification of ownership change.
• Manufacturer-backed coverage. As a GAF CoatingsPro(TM) Liquid Applied contractor, Owens Corning Preferred Contractor, and Mule-Hide Warranty Eligible applicator, qualifying Pasadena installations carry manufacturer-backed warranty protection.
• Local. Our Alhambra headquarters is 10-15 minutes from Pasadena. The San Gabriel Valley is one of our most active commercial markets.

Tim Cason, the manager at CTRL Collective coworking space in Pasadena, came to us after other contractors insisted on a full tear-off for his fully occupied 1916 building. We repaired and restored it - no shutdown, no tear-off. That’s the HP Roofing Pro standard.

📞 Call 909-521-1285 or request a free Pasadena roof assessment online →

Pasadena Service Area

HP Roofing Pro serves commercial properties throughout Pasadena and the surrounding San Gabriel Valley from our Alhambra headquarters - including South Pasadena, Altadena, San Marino, Sierra Madre, Arcadia, La Cañada Flintridge, and East Pasadena.

For commercial-scale projects, we also travel throughout the LA Basin, Inland Empire, Orange County, and broader California. View our full service area →

HP Roofing Pro - CSLB #1043546 - Licensed, Insured & Bonded 601 S Palm Ave, Alhambra, CA 91803 📞 909-521-1285 - [email protected] Get a Free Estimate →