NASCLA Commercial General Building Contractor Exam — All Questions

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All Procurement & Contracting Requirements General Requirements Site Construction Concrete Metals Mechanical & Plumbing Wood, Plastics & Composites Thermal & Moisture Protection Finishes Masonry Openings (Doors, Windows & Glazing)Electrical

1 questions

Thermal & Moisture Protection

At the intersection of a roof and a vertical wall or penetration, what component is installed to prevent water intrusion?

a.A control joint
b.A vapor retarder only
c.Flashing✓
d.A weep screed

Flashing is the sheet material installed at roof-to-wall junctions, penetrations, and other transitions to direct water away and prevent leaks. It is one of the most failure-prone areas of the building envelope, so correct flashing detailing is critical to thermal and moisture protection.Roofing / flashing (thermal and moisture protection)

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