H-Stud Area Separation Wall
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The H-Stud Area Separation Wall consists of 2" light-gauge steel H-Studs which secure two layers of 1" Fire-Shield Shaftliner or 1" Fire-Shield Shaftliner XP board between adjacent studs.
Shaftliner board is faced with green moisture-resistant paper and Shaftliner XP board is faced with purple moisture/mold/mildew resistant paper on both sides for protection against weather during installation. Shaftliner panels have a beveled edge configuration allowing for simple installation into the H-Studs.
The H-Studs are secured at the foundation floor by the flanges of H-Stud Track. The same track is used back-to-back at intermediate floors to provide a splicing means so that the System can be erected one floor at a time. H-Stud Track is also used at the roof line or at the parapet and at wall ends.
For a fire-rated assembly without the need for battens, a minimum 3/4" air space shall be maintained between the H-Stud assembly and any adjacent framing members. When a 3/4" air space cannot be maintained, the H-Stud and H-Stud Tracks are covered by screw-attached 6" wide battens fabricated from 1/2" Fire-Shield C Gypsum Board; or 1/2" Fire-Shield C Gypsum Board boards can be fastened to the H-Studs and joints* covered with tape and joint compound to provide a finished wall. Mineral wool or glass fiber can be installed in adjacent cavity shaftwalls to provide higher STC ratings.