Commercial Roofing

How We Choose the Right Commercial Roof System

A commercial roof fails when the wrong membrane sits on the wrong substrate, not from bad luck. We match the system to your roof deck, its pitch, and how much foot traffic the rooftop actually carries.

• TPO membrane is heat-welded single-ply that resists UV and standing water, and it earns the longest warranty terms on a flat deck.
• EPDM rubber membrane shrugs off thermal shock and costs less when the field is wide and penetrations are few.
• Modified bitumen is asphalt-based and torch-applied or self-adhered, which suits roofs crowded with pipe flashing.
• PVC membrane stands up to grease and kitchen exhaust, so it fits restaurant and loading-dock roofs.
• Built-up roof layers felt and bitumen under gravel surfacing, and it still works on older decks that cannot take a recover.
• Standing-seam panel and corrugated panel handle steeper slopes and last decades when fasteners stay tight.

We install systems from Carlisle SynTec, GAF EverGuard, Firestone, Johns Manville, and Versico. Warranties run 15 to 30 years NDL, and we put in writing what voids them: ponding water, added HVAC units, unapproved tenant repairs.

What a Roof Asset Survey Looks For

A roof asset survey is a roof inspection that starts at the roofline and walks every square before we quote a number. We photograph wet insulation, take a test cut, and check whether the parapet, scupper, coping, and drain push water back onto the field.

• Membrane delamination and seam separation appear first along the field course, where foot traffic is heaviest.
• Ponding water at a drain means the deck has settled out of pitch, and that points to structure rather than surface.
• Wet insulation and a saturated roof deck feel soft under a pry bar, and leaving them in place voids most warranties.
• Rotted plywood or OSB sheathing under a pitched section means the substrate gets rebuilt before new material goes down.
• Failed flashing at a parapet, chimney, skylight, or vent boot causes most of the interior leaks we trace.
• A dead attic fan or a blocked soffit vent shows up as condensation, because ventilation under the decking has stopped.

Steep-Slope Details on Mixed-Use Buildings

Plenty of properties near Arcadia and the Willo Historic District run pitched sections of shingle, tile, or wood shake above the same structure as a flat roof. Different crew, different details.

• Asphalt shingle and architectural shingle go down from the eave up, with a starter course and staggered courses so the field course locks together.
• Three-tab shingle, clay tile, and concrete tile each need their own underlayment and fastener pattern, while slate and cedar shake get matched on smaller repairs.
• Synthetic underlayment has replaced roofing felt and tar paper on most reroofs, with ice-and-water shield at every valley and eave.
• Drip edge, fascia, soffit, and rake or verge trim get replaced when old metal has peeled, and the ridge cap and ridge vent close the top.
• A batten or counterbatten grid lifts clay tile off the deck, and a purlin spreads load where truss spacing runs wide.
• A dormer, hip, gable, or mansard section gets its own flashing set, including apron flashing and boot flashing at each penetration.

Tear-Off, Recover, and How the Work Runs

We stage a dumpster, scaffold, ladder access, and a debris chute on day one, and every roofer on the roof wears a safety harness clipped to a rated anchor. Here is the sequence we follow on most buildings.

1. Tear-off strips the old membrane to the deck instead of hiding rot under a recover or an overlay.
2. Deck repair replaces water-damaged plywood or OSB, and a sagging truss, rafter, joist, or ridge beam gets sistered or replaced.
3. A vapor barrier and rigid insulation go down with tapered crickets that steer water toward the drains.
4. Membrane goes on mechanically fastened with screws and plates, self-adhered with contact adhesive, or torch-applied for modified bitumen.
5. Flashing work covers step flashing, counter-flashing, chimney flashing, and apron flashing, hand-sealed with mastic, caulk, or roof cement at each termination.
6. Waterproofing and weatherproofing passes finish with sealant at pipe boots and a magnet sweep for spilled nails and debris.

Code, Coordination, and Timelines

Commercial work in Maricopa County has to satisfy building code for roof assembly ratings, so we pull permits and hand the inspection paperwork to ownership. Property managers get a schedule that names crew days and parking-lot closures.

• Building code updates can require added insulation thickness at the roof deck when a recover goes over an existing assembly.
• Tenant coordination matters near I-10 and Loop 101, where a closed loading dock costs a tenant a full day of business.
• Most flat roofs take two to four days, while a large building with HVAC curbs and skylights can run two to three weeks.
• Cost drivers are square footage, number of tear-off layers, wet insulation, roof access, and how many penetrations need new flashing.
• A reflective coating is the low-cost path when the membrane is sound; full replacement is the honest answer when it is not.

Call 6025330488 for a free estimate and a roof asset survey you can budget against. Ice dams and steam ice belong to cold climates, while in Phoenix we fight UV granule loss, hail bruising, and heat that oxidizes asphalt.