Preview - How to Hang Airtight Drywall on Exterior Walls - Fine Homebuilding Video
  • Tips & Techniques for Painting
    Tips & Techniques for Painting
  • 7 Trim Carpentry Secrets
    7 Trim Carpentry Secrets
  • Video Series: Tile a Bathroom
    Video Series: Tile a Bathroom
  • Master Carpenter Videos
    Master Carpenter Videos
  • Basement Remodeling Tips
    Basement Remodeling Tips
  • Deck Design & Construction
    Deck Design & Construction
  • Design Inspiration
    Design Inspiration
  • All about Roofing
    All about Roofing
  • Ultimate Deck Build 2015
    Ultimate Deck Build 2015
  • 7 Small Bathroom Layouts
    7 Small Bathroom Layouts
  • Clever daily tip in your inbox
    Clever daily tip in your inbox
  • 9 Concrete Countertop Ideas
    9 Concrete Countertop Ideas
  • Inside a Model Remodel
    Inside a Model Remodel
  • Magazine Departments
    Magazine Departments
  • 7 Smart Kitchen Solutions
    7 Smart Kitchen Solutions
  • Energy-Smart Details
    Energy-Smart Details
  • Remodeling Articles
    Remodeling Articles
  • Install a Vinyl Privacy Fence
    Install a Vinyl Privacy Fence
  • Read FHB on Your iPad
    Read FHB on Your iPad
Pin It

How to Hang Airtight Drywall on Exterior Walls


Hanging drywall on an exterior wall uses the same fundamentals as hanging the ceiling but, there are more holes - electrical outlets, windows, doors, and service chases.

Before hanging the walls, cut back all of the canned foam applied to the ceiling perimeter, any obstructions around windows, and if not done on the pre-construction walk-through, seal all of the gaps between framing members.

Again, the face of the studs get a thick bead of adhesive. Windows get the royal treatment. Use both latex caulk and polyurethane construction adhesive.

Place the left edge of the sheet into the corner and then lay the rest of it flat against the framing, caulk, and adhesive.

After the cutouts are made for the boxes, seal the drywall opening to the edge of the box opening. First, brush out the dust so that the caulk can stick. Then apply a generous bead of caulk around the perimeter of the box. Smear it in with your finger to make sure the opening is sealed.

It is not just windows and electrical boxes that can make a wall tricky. This big conduit running from the electrical service panel outside to the breaker panel inside presents a bit if an obstacle. To best treat this, we removed the fastening brackets so that we can slide a sheet of drywall behind it.

After the drywall is sealed up, the conduit can be boxed out. Don’t box out the chase before the drywall because this introduces long cracks in an otherwise continuous plane.

Plus get a free gift
Become a Fine Homebuilding Member. Start your free trial now