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membrane penetration

  1. S

    membrane / sheathing

    In Ontario building code, "membrane" and "sheathing" are used thousands of times. When we are saying membrane in every day life, it means a thin sheet, like paper or wrapping sheet, while in OBC, a sheet of "gypsum board" can be called "gypsum board membrane", see OBC SB-2 2.3.4.(1). My...
    • sunyaer
    • Thread
    • gypsum baord membrane penetration obc sheetrock
    • Replies: 16
    • Forum: Canada
  2. J

    2015 IRC 302.2 membrane penetration

    Per this section the common wall shall be constructed without plumbing or mechanical equipment, ducts or vents in the cavity of the common wall. I have a double wall. 2x4's with 5/8" type x each side, an airspace. Structure requires that a beam penetrate one layer of GWB and sits on multiple...
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