BASC Search | Building America Solution Center

Window flashing is overlapped to provide a continuous drainage plane.

Window flashing is overlapped to provide a continuous drainage plane.

Image

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

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

Image

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

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

Image

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

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

Image

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

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

Image

Pouring water into the window track and checking for drainage at the weep holes can reveal if weep holes are draining properly.

Pouring water into the window track and checking for drainage at the weep holes can reveal if weep holes are draining properly.

Image

Window weep holes, located on the exterior at the bottom of the window frame, ensure proper drainage and prevent water infiltration.

Window weep holes, located on the exterior at the bottom of the window frame, ensure proper drainage and prevent water infiltration.

Image

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

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

Image

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

Image

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

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

Image

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

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

Image

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.

Image

Low-E Exterior Storm Windows

Guide

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

Pre-Retrofit Assessment of Walls, Windows, and Doors

Information Guide

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

Windows and Doors are Fully Flashed

Guide

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

Guide describing a method to modify the existing sash of a window to accept new double (or triple), low-E coated, insulated glass units.

Existing Skylights Repaired or Replaced and Fully Flashed

Guide

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

Window Performance Grades and Installation Details for Multifamily Buildings

Guide

Guide providing describing the window classifications per the Fenestration and Glazing Industry Alliance.