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Airseal the Rim Joist and Wall Framing Connection

September 29, 2017
Read time: 1 min

Glue the rim joist, caulk the gaps, and overhang the wall sheathing to tighten this leaky building assembly


One of the leakiest parts of a house is where the floor meets the walls and foundation. On the Model Remodel project, Ben Bogie added air sealing to each step of the framing sequence, beginning with a sill seal gasket.


Step by step:

  • The mudsill and joists are added, but before installing the rim joist, he laid a bead of construction adhesive to bed it in. Adhesive is also applied up the edge, for an airtight corner.

  • Huber’s new foaming subfloor adhesive was used to glue down the AdvanTech subflooring.
  • Walls are framed as usual, but before adding sheathing, seal the gaps with silicone sealant.
  • The wall panels are sealed to the foundation in perfect-world of animation-land, but the real foundation was out of square, so some onsite 'engineering' was needed.
  • Last, he taped the corners and seams in ZIP System’s R Sheathing for a tightly seamed and well-insulated wall.


—This detail comes from the 2017 Model Remodel project in Woodbury, CT. Watch the progress weekly on the Model Remodel Show.

Floor-Leaks.pdf (109.23 KB)

Download the detail:

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