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Post-Applied Water Repellents

Key Points:

  • We recommend the use of a clear, colorless, breathable penetrating water repellant sealant as part of a comprehensive moisture control strategy using WCT units and flashing and weeps.
  • The integral water repellant in the block and mortar addresses most moisture penetration; the post-applied sealant helps with if there are any small voids in the wall.
  • Application of the sealant should be demonstrated and accepted on the sample panel prior to application on the main walls.
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