Drywall

A typical fire problem: the measures taken by the plumbers and the drywallers are at cross-purposes.

Another set of unsealed drywall through-penetrations.

Another example: this steel sleeve, a penetrant itself, causes more problems than it solves.

Penetrants have been punched and burned through drywall, compromising its integrity.

Mechanical shaft with compromised fire-resistance rating through pipe installation.

Finished, painted, fire-resistance rated drywall assembly. A common deficiency: List ceiling tiles and find electrical and mechanical service penetrations without a firestop.

Improper drywall assembly with absent firestops at Cambrian College, Sudbury, Ontario, Canada

Improper Firestop and Fireproofing interface, August 2000, Cambrian College, Greater Sudbury, Ontario, Canada.

Improper breach of fire-resistance rated drywall assembly, August 2000, Cambrian College, Greater Sudbury, Ontario, Canada.