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Mistake & recovery · #069

Failing to double-hem raw edges on kitchen exhaust hoods for rigidity

2nd YearSheet Metal Work

All exposed edges on grease hoods require a minimum 3/4" hem turned twice. A single fold is not sufficient for structural rigidity or food-safe compliance…

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Safer field move

All exposed edges on grease hoods require a minimum 3/4" hem turned twice. A single fold is not sufficient for structural rigidity or food-safe compliance. Use a hand folder or brake to form a clean double hem.

Ask Foreman

Can you verify this before I keep going? I’m looking at: Failing to double-hem raw edges on kitchen exhaust hoods for rigidity. What’s the approved correction for this job?

Do not

Do not hide, force, cover, or “make it work” if this affects safety, access, airflow, rated assemblies, supports, equipment, or inspection. Stop and verify the approved correction.

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