BASC Search

Taped Insulating Sheathing Drainage Planes

Guide describing techniques for installing insulating sheathing as a continuous drainage plane on walls.

Upper wall insulation installation with butyl z-flashing

Publication Date

Mon, 09/01/2014 - 12:00

This exterior insulated slab-on-grade monolithic grade beam foundation is protected from pests by termite shield at the sill plate, borate-treated framing, flashing at end of wall insulation, brick veneer over slab-edge insulation, and rock ground cover.

Publication Date

Mon, 03/01/2021 - 12:00

Measure Guideline: Guidance on Taped Insulating Sheathing Drainage Planes

Author(s)

Grin Aaron,

Lstiburek Joseph W

Organization(s)

Building Science Corporation,

BSC

Publication Date

September, 2014

Measure Guideline research report providing simple, long term, and durable solutions when using tapes and flashing membranes in conjunction with the exterior face of rigid polymeric foam sheathing to create the drainage plane of a wall system.

Clean taping areas and install 3" tape on vertical joint of upper insulation overlapping the horizontal joint

Publication Date

Mon, 09/01/2014 - 12:00

Tape the joint between the top insulation sheet and the Z-flashing with 2" wide tape to improve air tightness

Publication Date

Mon, 09/01/2014 - 12:00

This farmhouse was retrofit by removing the existing siding and adding taped insulated sheathing and battens before installing new siding

Step 1. Apply roof underlayment over roof deck and up the sidewall over the rigid foam insulation

Reference

40% Whole-House Energy Savings in the Marine Climate, Volume 11

Author(s)

Baechler Michael C,

Gilbride Theresa L,

Hefty Marye G,

Cole Pam C,

Williamson Jennifer,

Love Pat M

Organization(s)

Pacific Northwest National Laboratory,

PNNL,

Oak Ridge National Laboratory,

ORNL,

U.S. Department of Energy,

DOE

Report providing builders in marine climates with guidance for building homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers.

Publication Date

Wed, 09/01/2010 - 12:00

Step 5. Apply self-adhesive flashing over top edge of the wall flashing, diverter, and rigid foam insulation

Reference

40% Whole-House Energy Savings in the Marine Climate, Volume 11

Author(s)

Baechler Michael C,

Gilbride Theresa L,

Hefty Marye G,

Cole Pam C,

Williamson Jennifer,

Love Pat M

Organization(s)

Pacific Northwest National Laboratory,

PNNL,

Oak Ridge National Laboratory,

ORNL,

U.S. Department of Energy,

DOE

Report providing builders in marine climates with guidance for building homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers.

Publication Date

Wed, 09/01/2010 - 12:00

Rigid foam insulation can serve as the drainage plane when all seams are taped. Furring strips provide an air gap behind the cladding.

Publication Date

Sun, 04/01/2012 - 12:00

This basement is insulated on the exterior with rigid foam over dampproofing, with granular backfill and footing drains to facilitate drainage away from the foundation, a termite shield to protect from pests, and cellular PVC to protect the rigid foam.

Publication Date

Mon, 03/01/2021 - 12:00

Flashing of Wall Penetrations in Existing Homes

Guide describing how to install flashing that is integrated with air and water control layers around piping, vents, and other wall penetrations as part of an exterior wall retrofit.

Flashing of Penetrations in Existing Roofs

Guide describing how to provide a continuous water control layer across the roof assembly by sealing all penetrations for pipes, vents, etc. in existing roofs.

Install minimum 6" wide self-adhered butyl Z-flashing

Publication Date

Mon, 09/01/2014 - 12:00

Right – Two-thirds of acrylic tape is offset above the joint and over and above the fasteners

Publication Date

Mon, 09/01/2014 - 12:00

Right – two-thirds of the blue butyl flashing tape is above the sheathing seam; the top edge of the butyl flashing tape is covered with clear sheathing tape that is also offset so two-thirds is above the top edge of the butyl flashing.

Publication Date

Mon, 09/01/2014 - 12:00

Taped Insulating Sheathing Drainage Planes

Upper wall insulation installation with butyl z-flashing

This exterior insulated slab-on-grade monolithic grade beam foundation is protected from pests by termite shield at the sill plate, borate-treated framing, flashing at end of wall insulation, brick veneer over slab-edge insulation, and rock ground cover.

Measure Guideline: Guidance on Taped Insulating Sheathing Drainage Planes

Clean taping areas and install 3" tape on vertical joint of upper insulation overlapping the horizontal joint

Tape the joint between the top insulation sheet and the Z-flashing with 2" wide tape to improve air tightness

This farmhouse was retrofit by removing the existing siding and adding taped insulated sheathing and battens before installing new siding

Step 1. Apply roof underlayment over roof deck and up the sidewall over the rigid foam insulation

Step 5. Apply self-adhesive flashing over top edge of the wall flashing, diverter, and rigid foam insulation

Rigid foam insulation can serve as the drainage plane when all seams are taped. Furring strips provide an air gap behind the cladding.

This basement is insulated on the exterior with rigid foam over dampproofing, with granular backfill and footing drains to facilitate drainage away from the foundation, a termite shield to protect from pests, and cellular PVC to protect the rigid foam.

Flashing of Wall Penetrations in Existing Homes

Flashing of Penetrations in Existing Roofs

Install minimum 6" wide self-adhered butyl Z-flashing

Right – Two-thirds of acrylic tape is offset above the joint and over and above the fasteners

Right – two-thirds of the blue butyl flashing tape is above the sheathing seam; the top edge of the butyl flashing tape is covered with clear sheathing tape that is also offset so two-thirds is above the top edge of the butyl flashing.

Step and Kick-Out Flashing at Roof-Wall Intersections

Windows and Doors are Fully Flashed

Roof Valleys and Penetrations Sealed

Asphalt Shingle Roofs

Roof Edge Protection

Clay or Concrete Tile Roofs

Flashing of Roof-Wall Intersections in Existing Homes