felt

Walls Without Water-Resistive Barriers

Posted on May 04,2015 by ScottG in asphalt felt

Unless a builder has opted for a Zip System wall or is willing to ignore building code requirements, a layer of housewrap or building felt typically covers any exterior sheathing before the siding is applied. This water-resistive barrier, or WRB, helps to protect the sheathing from damage in the event that water is driven past the siding.

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