Step 3 · Interview How to interview for each commercial roofing role.
Everyone who applies will claim the experience. These are the questions that test it, the signals that separate a strong candidate from a plausible one, and the mistake each seat invites.
Commercial Roofing Foreman
My Trade Talent band Runs the crew on a commercial roof: tear-off sequencing, deck inspection, insulation and cover board layout, membrane installation, flashings and terminations, and the daily call on whether the weather lets the work go on. Owns safety on a surface where the fall hazard is the job site itself.
Questions that find out
- Tear-off is open and a storm is two hours out. What is your sequence?
- Walk me through flashing a curb-mounted unit on a TPO roof.
- The deck under the old system is worse than the bid assumed. Who do you call and in what order?
What a strong candidate shows
- Names the systems worked rather than saying "commercial roofing" - TPO, EPDM, modified bitumen, built-up, standing seam
- Treats detail work - curbs, penetrations, parapets, drains - as the part that decides whether the roof leaks
- Can describe a dry-in plan for a partial tear-off with rain forecast
The mistake this seat invites. Hiring on square footage installed rather than on detail work and dry-in judgement. Roofs fail at penetrations and terminations, not in the field of the membrane.
Commercial Roofing PM
My Trade Talent band Owns commercial roofing jobs from award through warranty: submittals and manufacturer approvals, material procurement on long-lead systems, crew and equipment scheduling across several roofs, change orders for deck and substrate conditions, and the closeout paperwork the warranty depends on.
Questions that find out
- What does a manufacturer need from you before they will issue an NDL warranty?
- Three roofs, two crews, and a week of rain. How do you re-sequence?
- How do you price and document unforeseen deck replacement?
What a strong candidate shows
- Understands that the manufacturer warranty is a document trail, not a handshake
- Has scheduled around weather and material lead times as a normal constraint rather than an excuse
- Can describe pricing a deck-condition change order that was found after tear-off
The mistake this seat invites. Treating the role as general construction project management. Roofing is warranty-driven and weather-driven in ways other trades are not.
Commercial Roofing Service Technician
My Trade Talent band Finds and repairs leaks on existing commercial roofs, performs preventive maintenance inspections, and documents roof condition for building owners. Works alone most days, diagnosing from the symptom inside the building back to the cause on the roof.
Questions that find out
- A tenant reports a ceiling stain twenty feet from the nearest penetration. How do you find the source?
- How do you repair a TPO seam failure so the warranty survives it?
- What goes in a preventive maintenance report that makes an owner approve the repair?
What a strong candidate shows
- Describes leak tracing as a diagnostic process rather than patching the nearest suspect spot
- Comfortable writing the condition report the owner actually reads
- Has worked across several membrane types, because service work does not get to choose
The mistake this seat invites. Screening for installation experience. Service technicians diagnose and write; installers produce. The overlap is smaller than it looks.
Every role in every trade is in the interview question bank.