Commercial Roofing
Commercial roofing for office, retail and light industrial properties throughout the Valley.
Kellum Roofing provides commercial roofing services to office, retail, light industrial and multi unit properties throughout Glendale, Phoenix, Tempe and the greater Valley. We handle flat and foam systems, coatings, commercial tile and shingle work, and repairs across all of those types. The work is the same trade as residential, but the priorities are different, and the biggest one is that the building has to keep operating while we are on it.
What Changes on a Commercial Roof
Scale is the obvious difference, but it is not the interesting one. What actually changes is the density of penetrations. A residential roof has a handful of plumbing vents and maybe a cooler curb. A commercial roof has HVAC units on curbs, condensate lines, exhaust fans, conduit runs, gas lines, skylights, hatches and often a satellite or antenna array, and every single one of those is a place water can get in. Commercial roofing is therefore mostly a detailing job. The field of the roof rarely fails. The curbs, the flashings and the transitions do. When we assess a commercial roof, the penetrations get the most attention because that is where the money and the risk are.
Systems We Install and Service
Spray polyurethane foam with elastomeric coating is the workhorse of Valley commercial roofing. Seamless, self flashing around penetrations, adds insulation value, can often be applied over an existing sound substrate, and can be built up to correct ponding. Recoating of existing foam systems is the single most cost effective thing most commercial building owners can do. Restores ultraviolet protection and reflectivity, resets the maintenance clock, and costs a fraction of a replacement, provided the foam underneath is still sound. Commercial tile and shingle is common on retail centers, offices and multi unit residential built to match a residential aesthetic. We do not work on metal roofing systems.
Reflectivity, Cooling Load and Operating Cost
On a commercial building in Phoenix, the roof is a very large horizontal surface absorbing sun all day directly above conditioned space. A dark, degraded, non reflective roof pushes that heat straight into the building, and the HVAC system spends the summer fighting it. A bright reflective elastomeric coating changes that equation measurably. For a building owner or a tenant paying the cooling bill on a warehouse or a retail box, the operating cost difference is a real line item, not a rounding error. It is one of the few roofing decisions that has an ongoing financial return rather than just avoiding a loss.
Ponding, Drainage and Rooftop Equipment
Commercial flat roofs pond for the same reasons residential ones do, with two aggravating factors. There is more rooftop equipment creating obstructions and low spots, and drains and scuppers are further from anyone's attention. In Arizona the drains fill with blown dust, gravel, palm debris and litter, and nobody notices until water has nowhere to go during a monsoon. We check whether water is actually leaving the roof, address the drainage, and where the slope itself has failed we can build up foam to reestablish it. We also look closely at HVAC curbs. Equipment gets serviced, technicians walk the roof, panels get set down, and the roofing around a curb takes abuse that the rest of the field never sees.
Working Around Your Operations
Most commercial roof work, particularly coating and foam application, can be done without shutting down the business underneath. We coordinate scheduling around your hours, keep access routes clear, manage staging so it does not consume your parking, and communicate the schedule up front rather than showing up unannounced. Kellum Roofing is licensed under Arizona ROC 352782, bonded and fully insured, and we will provide current certificates of insurance to your property manager or facilities team before work begins. That documentation requirement is normal on commercial work and we are set up for it.
Assessment and Documentation for Owners and Property Managers
If you own or manage the building, you generally need more than a verbal opinion. Our commercial inspections come with photo documentation of the existing system condition, the penetrations and curbs, the drainage, and any areas of active or likely failure, along with a written scope and price. That gives you something you can take to an owner, a board, a budget cycle or a tenant, rather than a number on the back of a card. If you are evaluating whether to recoat now or replace in three years, we will give you the honest version of that math.
Not sure what your roof needs?
Get a free inspection with photos from a licensed Glendale roofer. Call (480) 258-0925 or request an estimate online.
Free InspectionOther Services
We walk the roof, photograph what we find, and give you a written estimate, often the same day.
(480) 258-0925
Built to endure
Arizona heat.
BBB Accredited
Accredited Business since 2024.
Licensed, Bonded, Insured
Arizona ROC 352782, Specialty Dual.
Locally Owned
Based in Glendale. Not a franchise and not an out-of-state storm chaser.
Manufacturer Warranties
Underlayment warranties from 10 to 30 years.
Quality work, thorough, detailed. Highly recommend Kellum Roofing.