Wet Shaft Wall Liner

[Paul Sweet]

Are there any guidelines on whether the fire resistance of gypsum shaft liner is reduced when it gets wet? We recently had significant water damage from a leak in lab equipment in a science building, and some water did run down a rated shaft wall. We will ask the state Fire Marshal to look at it once the outer layer of the wall is removed.

 

[RLGA]

Find out what product was installed. Many shaftliner panels have moisture-resistant facings and cores. If the quantity of water was minimal, then I doubt there should be a problem, but you may want to check with the manufacturer.

 

[steveray]

Most of it that I have seen is a Densglass type product which should be resistant which makes it more feasible to install in a building under construction and exposed....