Service Area
Commercial Roofing Contractors in Pasadena, CA
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.
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 fail again within months: a contractor spreads asphalt mastic over a wet membrane, the Pasadena sun cracks it, and the leak returns. HP’s standard is different. We never apply material over a wet membrane. Our 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, 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 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.
Three engineered components:
- Waterproofing-grade asphalt base, seals and bonds to the existing substrate
- Stitch-bonded polyester reinforcement, engineered for structural integrity and puncture resistance
- Two-phase acrylic elastomeric reflective surfacing, designed to reflect solar heat, lower interior temperatures, and meet California Title-24 energy standards
No tear-off, no disposal, no exposing your building’s interior, an important consideration for medical and professional tenants who can’t absorb downtime.
RainArmor vs. Full Replacement
| RainArmor Restoration | Full Tear-Off Replacement | |
|---|---|---|
| Tear-off required | No, installs over existing roof | Yes, old roof removed and disposed |
| Business disruption | Minimal, building stays protected | Significant, interior exposed |
| Energy performance | Cool-roof surfacing, Title-24 compliant | Depends on system selected |
| Tax treatment | Typically maintenance expense (single-year) | Capital expenditure (depreciated) |
| Warranty | 15-25 year leak-free options | Varies by manufacturer |
Full replacement is available when genuinely necessary. We just won’t recommend it when you don’t need it.
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
- Skylight Removal & Installation, replace aging commercial skylights before they leak
- Solar Panel Roofing, structural assessment and membrane prep for photovoltaic installations
Why Pasadena Property Managers Choose HP Roofing Pro
- Close to you, our Alhambra HQ is 10-15 minutes from Pasadena
- Honest assessment, we tell you what your roof needs, not what generates the biggest invoice
- Full capability, repair, restore with RainArmor, or full replacement
- CSLB #1043546, fully licensed and insured since 2017
- Manufacturer Certified, Owens Corning Preferred Contractor, GAF CoatingsPro, Mulehide Warranty Eligible
- 15-25 year warranties, backed by documented inspection and installation standards
- Title-24 compliant, all systems meet California energy standards
Pasadena Service Area
We serve commercial properties throughout Pasadena and the western San Gabriel Valley:
Pasadena area: Pasadena, South Pasadena, Altadena, East Pasadena
Adjacent communities: San Marino, Sierra Madre, Arcadia, La Cañada Flintridge, and neighboring Glendale
Greater SGV: connects with our Alhambra HQ coverage for full San Gabriel Valley reach
HP Roofing Pro 601 S Palm Ave, Alhambra, CA 91803 📞 909-521-1285 · [email protected] CSLB #1043546
Frequently Asked Questions
Can you re-roof an older or historic commercial building in Pasadena? +
What roofing system works best for a Pasadena retail store or supermarket? +
Can you repair the roof on an occupied Pasadena medical or office building? +
What is RainArmor? +
How close is HP Roofing Pro to Pasadena? +
Why do patch repairs on Pasadena commercial roofs keep failing? +
What areas near Pasadena do you serve? +
HP Roofing Pro
601 S Palm Ave, Alhambra, CA 91803
Serving Pasadena, CA