BASC Search | Building America Solution Center

Window flashing is overlapped to provide a continuous drainage plane.

Publication Date

Thu, 09/01/2011 - 12:00

Wrong – The corners are not properly flashed, leaving a vulnerable area in the drainage system

Publication Date

Tue, 02/01/2011 - 12:00

Permanent exterior low-E storm windows include weep channels in the bottom leg of the frame to allow for drainage

Publication Date

Wed, 09/01/2021 - 12:00

Proper flashing around windows is especially important when the rigid foam serves as the drainage plane in the wall

Publication Date

Mon, 10/01/2007 - 12:00

Right – The flashing is properly installed to create a complete drainage system with continuous rigid insulation sheathing/siding

Publication Date

Tue, 02/01/2011 - 12:00

Wrong - Window sill trim was too tall for window frame and was poorly modified in an attempt to provide drainage out of the window.

Publication Date

Mon, 06/05/2023 - 12:00

Wrong - Stucco has rotted and cracked above a window because of water damage due to lack of proper flashing and drainage.

Publication Date

Tue, 11/12/2019 - 12:00

Install insulating foam sheathing and tape all seams to serve as a continuous drainage plane behind the home’s cladding.

Reference

Building America Best Practices Series - 40% Whole-House Energy Savings in the Cold and Very Cold Climates, Volume 12

Author(s)

Baechler Michael C,

Gilbride Theresa L,

Hefty Marye G,

Cole Pam C,

Love Pat M

Organization(s)

Pacific Northwest National Laboratory,

PNNL,

Oak Ridge National Laboratory,

ORNL,

U.S. Department of Energy,

DOE

Guide describing measures that builders in the cold and very cold climates can take to build homes that have whole-house energy savings of 40% over the Building America benchmark with no added overall costs for consumers.

Publication Date

Tue, 02/01/2011 - 12:00

Right – There is flashing installed along the top of the window and the water-resistant barrier is layered over to create a complete drainage system

Publication Date

Tue, 02/01/2011 - 12:00

The fluid-applied asphalt coating provides a weather-resistant, moisture resistant layer around the house, serving as a continuous drainage plane and flashing for window and door openings.

Low-E Exterior Storm Windows

Guide describing how to install low-e exterior storm windows.

Pre-Retrofit Assessment of Walls, Windows, and Doors

Information guide describing things to consider before retrofitting walls, windows, and doors, including wiring, moisture protection, and lead paints.

Windows and Doors are Fully Flashed

Guide describing how to install flashings to help direct water down and out of windows and doors openings in exterior walls.

Window Sash Retrofit

Guide describing how to modify an existing window sash for high-efficient windows.

Existing Skylights Repaired or Replaced and Fully Flashed

Guide describing how to repair or replace skylights in existing homes.