Step by-Step: Pricing and Scoping a Commercial Roof Project
Step 1: Measure the Roof and Confirm the Assembly
- Pull the building footprint from county GIS or as builts. Typical Crossfields commercial roofs run 5,000 to 80,000 square feet.
- Identify the deck type: steel (22 gauge typical), concrete, or wood. Deck type drives fastener spec and load math.
- Identify the membrane: TPO (45, 60, or 80 mil), EPDM (45 or 60 mil), modified bitumen (2-ply SBS), PVC (50 or 60 mil), or metal (24 gauge standing seam).
- Measure insulation thickness. Code minimums in our climate zone push R-30, usually 4.5 to 5.5 inches of polyiso.
- Count penetrations: HVAC curbs, vents, drains, skylights. Each penetration adds 75 to 250 dollars in flashing labor.
- Note parapet heights and coping conditions. Parapets under 24 inches change edge metal detailing and wind uplift calculations.
- Document roof slope (typical low slope ranges from 1/4 inch to 1/2 inch per foot) and tape any ponding areas larger than 100 square feet.
Step 2: Classify the Damage
- Isolated puncture or seam split under 4 square feet: repair candidate.
- Multiple seam failures with membrane still serviceable: spot repair plus seam re weld, 3 to 7 dollars per linear foot.
- Saturated insulation under 25 percent of roof area: cut and patch with insulation replacement.
- Saturated insulation over 25 percent, or membrane past 80 percent of service life: replacement or recover.
- Active interior leak with visible ceiling staining: prioritize emergency tarping and dry in, then engage our commercial emergency roof repair crew while drying equipment runs inside.
- Hail bruising over more than 30 percent of field area: photograph and engage an insurance adjuster before scoping repair versus replacement.
- Blistering with intact top ply: monitor, do not cut, unless blisters break and expose felts.
Step 3: Price the Repair Path
- Diagnostic commercial roof inspection: free from Crossfields Roofing when paired with interior water assessment, otherwise 350 to 850 dollars from a roofing only contractor.
- Small puncture patch (under 2 square feet): 450 to 900 dollars.
- Seam re weld, 20 to 50 linear feet: 600 to 1,800 dollars.
- Drain bowl replacement: 800 to 2,200 dollars per drain.
- Flashing rebuild at parapet or curb: 1,200 to 3,500 dollars per location.
- Wet insulation cut out, replace, re membrane (100 square feet): 1,800 to 3,600 dollars.
- Pitch pocket rebuild around conduit or guy wires: 250 to 600 dollars per pocket.
- Coping cap re set with new butyl tape and fasteners: 18 to 32 dollars per linear foot.
Step 4: Price the Replacement Path
Use these per square foot ranges typical for Crossfields commercial work in 2024 to 2025:
Step 5: Add the Line Items the Base Number Misses
- Tear off and disposal: 1.00 to 1.75 dollars per square foot.
- Polyiso insulation upgrade to R-30: 1.50 to 2.50 dollars per square foot.
- Cover board (half inch HD polyiso or gypsum): 0.60 to 1.10 dollars per square foot.
- New drains, scuppers, and overflow scuppers: 800 to 2,500 dollars each.
- Walk pads at behind cabinets and appliances: 8 to 14 dollars per linear foot.
- Permits and engineering letter: 400 to 2,000 dollars depending on building size.
- Crane or boom rental for material loading: 1,200 to 3,800 dollars per day.
- Tapered insulation packages for positive drainage: 0.80 to 1.60 dollars per square foot averaged across the field.
- Edge metal and termination bar upgrades to ANSI/SPRI ES-1: 9 to 16 dollars per linear foot.
- Lightning protection re attachment after membrane work: 1,500 to 4,500 dollars per building.
Step 6: Decide Between Recover and Full Replacement
- Recover (new membrane over existing) is allowed once per IBC. If the building already has two roof systems, you must tear off.
- Recover saves 25 to 40 percent versus tear off when insulation is dry and deck is sound.
- If a moisture survey shows over 15 percent saturated insulation, recover is not appropriate.
- Confirm structural load capacity before adding weight from a recover system.
- Verify the existing membrane is mechanically sound. Brittle EPDM or shrunken seams telegraph through a recover and shorten service life.
- Our commercial roof replacement team will document moisture readings before quoting either path.
Step 7: Sequence the Work to Protect the Interior
- Schedule tear off in dry weather windows only. Watch 72 hour forecasts.
- Limit daily tear off to what your crew can dry in by end of shift.
- Stage interior plastic and equipment protection under active work zones.
- If a leak develops mid project, pause and document for insurance.
- Notify tenants 48 to 72 hours before noisy phases (fastener install, kettle operation if MB) so production schedules adjust.
- Establish a single staging zone for material drops to keep parking and dock traffic clear.
- Coordinate any interior commercial water damage restoration work in parallel so tenants are not displaced twice.
Step 8: Verify Specifications at Closeout
- Confirm membrane gauge with manufacturer stamped material tags.
- Verify fastener pattern matches wind uplift design (typical 12-inch on center at perimeter).
- Test seam welds with probe at 1 to 2 foot intervals.
- Flood test new drains where feasible.
- Photograph every penetration flashing for the closeout binder.
- Collect manufacturer warranty (typically 15, 20, or 30 year NDL) and contractor workmanship warranty (2 to 5 years).
Step 9: Build the Maintenance Plan That Protects the Investment
- Schedule semi annual inspections in spring and fall. Spring catches winter freeze thaw damage, fall clears debris before snow load.
- Clear drains, scuppers, and gutters quarterly. Ponding within 48 hours of rainfall accelerates membrane breakdown by 30 to 50 percent.
- Re caulk pitch pans and termination bars on a 3 to 5 year cycle.
- Re coat metal roofs at year 10 with a silicone or acrylic system, 1.25 to 2.50 dollars per square foot, to extend service life another 10 to 15 years.
- Log every service visit in a digital roof file. Most NDL warranties require documented maintenance to remain valid.
- Budget 0.05 to 0.15 dollars per square foot per year for preventive maintenance. That spend typically prevents 5 to 10 times the cost in deferred repairs.
Step 10: Engage Crossfields Roofing for Scope Verification
- Send recent inspection reports, drone imagery, or insurance scope documents to Crossfields Roofing for a second review.
- Severity is assessed over the phone first, then a Crossfields field inspection is scheduled fast.
- For active leaks, tarping and dry in are prioritized while the scoping and pricing process continues in the background.
- Expect a written scope with line item pricing, photo documentation, and a recommended path within a few business days of the field visit.