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User Guides & Best Practices

Installing INTELLO PLUS In Wood Frame Buildings With Batt Insulation

August 16, 2017

This video covers how to properly install INTELLO Plus membrane over rigid or batt insulation in a wood frame assembly. In order to achieve a completely airtight barrier, it is important that the installation is done in a way that minimizes the potential for airleaks in the system. Here is a list of the top install tips from the video that you and your team can refer to during the installation process.

Top tips from the video:

Prep the site

  • Check framing for any protruding objects that may tear the membrane before installing
  • Only apply tape to dry, clean surfaces to ensure adhesion and airtightness

Unroll the membrane

  • Leave 1” overlap of membrane covering the floor for future sealing
  • Make sure the writing on the intello is facing into the room


  • Staple in a triangular pattern as you move along the studs to ensure the membrane is taut
  • Staple parallel to the studs
  • Staple at 3” intervals
  • Make sure the membrane is slightly “relaxed” at junctions (between walls & ceilings, corners, and floors) to accommodate expansion and contraction of the structure

Overlapping the membrane sheets

  • Overlap the next sheet of membrane using the guide marks on the intello
  • Using the dotted line to center the tape over the joint, tape the overlaps using TESCON VANA tape
  • The adhesive is pressure activated, so activate the tape by pressing firmly with a PRESSFIX tool

Floor Joint

  • Seal the membrane to the floorboard using CONTEGA HF adhesive caulk

Wall Penetrations

  • Light switches and outlets: use INSTAABOX to create an airtight cavity
    • adhere instaabox boxes to the membrane with TESCON VANA tape
  • Pipes: airseal with ROFLEX gaskets
  • Cables: airseal with KAFLEX air sealing sleeves

More Installation Videos:

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