What is the recommended practice for cutting through roofing to avoid gas ignition?

• A. Make controlled, deliberate cuts away from interior spaces, keep blades cool, and maintain a clear smoke path away from potential gas sources
• B. Cut near interior spaces to vent quickly
• C. Use dull blades to reduce sparks
• D. Vent first, then cut anywhere

Answer: (C)

Controlling ignition risk when cutting through roofing is the central idea. When you’re cutting to ventilate, any sparks from the cut can ignite gas pockets present in roofing materials or the attic. A dull blade tends to cut more slowly and produce fewer high-energy sparks, and it keeps the blade cooler overall. That combination lowers the chance that a spark or hot contact will ignite gas while you’re making the cut. The technique also supports a deliberate, controlled approach, which helps you keep the operation away from interior spaces and maintain a smoke path that stays clear of potential gas sources. Other approaches either move gas toward or into interior areas or don’t address spark/heat generation as effectively, so they’re less protective in this scenario.