Commercial Roof Replacement

Commercial Roof Replacement in Austin, TX

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  Full-system tear-off and replacement on Austin commercial flat roofs — scoped against your capital horizon, sequenced around Central Texas weather, and closed out with manufacturer warranty documentation.

  Most commercial roof replacements in the Austin metro get scoped reactively. The roof leaks, someone calls three contractors, and the lowest bid wins. That replacement often runs the same membrane on the same insulation against the same parapet detailing — and leaks again inside two years. We do not work that way.

  Our replacement scope starts with a roof walk and moisture-core sampling on any roof where we suspect saturated insulation. We document deck condition, parapet flashing condition, drain status, every penetration, and every prior repair. The scope then specifies the membrane, the insulation stack calibrated to current Austin energy code, the fastener density for wind-uplift compliance, the manufacturer warranty path, and the maintenance contract that keeps the warranty intact.

  Austin's climate makes scope discipline especially important. Summer surface temperatures on dark membranes routinely hit 150–165°F on flat roofs in the 78701 and 78702 zip codes. The Edwards Plateau karst limestone under much of the metro creates drainage constraints that differ significantly from flat-terrain cities — tapered insulation packages need to be designed against the specific drain layout and documented ponding patterns on your building, not against a generic Austin-average slope.

  The deliverable at closeout is the warranty document, a roof zone diagram with all closeout photos, the maintenance contract, and a written condition record that the next reroof cycle can build from — not a stack of receipts that the next building manager has to reconstruct.

  When Replacement Is the Right Call

  Recover-versus-replace is the first decision in any aging-roof scope. We pull moisture cores in five to ten representative locations on roofs we suspect have insulation saturation. If more than 25% of cores read wet, replacement is the honest scope — recovering wet insulation traps moisture and voids the new warranty within the first year. If under 25% read wet, a recover with targeted insulation replacement at wet areas can extend the asset another 15 to 20 years at roughly half the capital cost of full replacement.

  Deck condition is the second decision point. We pull deck inspection ports under wet cores and at visible deflection points. Corroded metal deck or rotted plywood means deck replacement, which moves the project into a different cost band and a different sequencing plan. Owners need to know this before the project starts, not when the crew opens the roof and stops work.

  Austin buildings on the Edwards Plateau sometimes have drainage constraints that make 'full replacement' more complex than a flat-terrain market equivalent: karst permeability means interior drain lines can shift over time, and parapet heights on mid-century buildings were often designed before current code. We flag these issues in the scope walk, not after mobilization.

  What the Replacement Scope Specifies

  Membrane: TPO 60-mil or 80-mil for most Austin commercial buildings — it is the dominant single-ply choice for the Austin climate because its white reflective surface reduces cooling loads significantly during the 90-day stretch of 100°F+ days that Austin averages. EPDM 60-mil for industrial with high mechanical traffic or where black membrane is operationally acceptable. PVC 50-mil or 60-mil for restaurants and high-chemical-exposure applications. Modified bitumen for buildings with existing BUR systems where a recover makes economic sense.

  Insulation: We specify to current Austin energy code (IECC 2021 minimum R-25 for low-slope commercial, often higher for buildings pursuing LEED or ENERGY STAR certification, which several of the Domain-area office properties require). The stack typically runs polyiso primary plus a cover board. Tapered insulation packages are designed against the actual drain layout and documented ponding patterns — not a generic slope estimate.

  Fastener pattern: Designed against IBC 2021 wind-uplift requirements for the building's zone and exposure category. Austin is mostly Exposure B or C depending on adjacent terrain and building height. Tall buildings on open lots near the SH 130 toll corridor or the 183A corridor in Cedar Park get more conservative pattern density.

  Manufacturer warranty path: 20-year NDL (no-dollar-limit) warranty is standard for most TPO and EPDM systems properly installed per manufacturer spec. PVC systems can carry 25-year warranties. Silicone fluid-applied restoration coatings carry 10, 15, or 20-year manufacturer warranties depending on applied mil thickness and substrate condition at time of application.

  How We Sequence the Project Around Austin Weather

  Pre-construction: Permits filed with the City of Austin Development Services Department (or relevant municipality — Round Rock, Cedar Park, Pflugerville, Georgetown — depending on building location), pre-job meeting with facility management to set crane staging and material lay-down zones, tenant notification distributed, parking and ingress/egress impacts documented.

  Production: Tear-off staged in 5,000 to 10,000 sq ft sections with same-day dry-in on each section. Austin's spring storm season — the Memorial Day 2015 floods and Halloween 2013 floods are the reference events for this region's convective capacity — means we track radar and maintain ready tarps for emergency cover even on clear-sky days. Crews work 5:30 AM to 1:30 PM in July and August to avoid peak surface temperatures that compromise TPO weld quality above 130°F substrate.

  Closeout: Punch walk with building management and our project manager, manufacturer warranty inspection with the manufacturer's field representative (most national TPO and EPDM manufacturers have regional reps based in Austin or Houston who cover Central Texas), closeout package delivered. The package includes the warranty document, photo-keyed zone diagram, maintenance contract, and manufacturer start-up documentation.

  How long does a commercial roof replacement take in Austin?

  For a 50,000 sq ft single-story building with no deck replacement and no major rooftop equipment relocation: typically 3 to 4 weeks of production from tear-off through closeout, assuming normal spring/summer weather cooperation. Austin's storm season can extend this by a week on larger projects. We provide a written production schedule before contract signing.

  Will the building be exposed to rain during the replacement?

  No. We tear off only what we can dry-in the same day. Each section gets a temporary dry-in at end of day. Given Austin's documented history of fast-moving convective events — storms have dropped 4+ inches in under two hours in Travis County — we plan conservatively. We do not leave the building's interior exposed overnight.

  Does Austin's limestone substrate affect replacement cost?

  Sometimes. Buildings on the Edwards Plateau that predate modern drainage design may need drain relocation or tapered insulation packages larger than a flat-terrain equivalent. We flag these in the scope walk. The cost impact is usually modest relative to total project cost, but it needs to be in the scope before contract — not discovered after tear-off.

  Get a written replacement scope for your Austin building.

  Our project managers will walk the roof, pull moisture cores if the recover-vs-replace decision depends on it, and deliver a written scope detailed enough to bid against.

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