How To Flash Window In Concrete Wall

Bill palmer an engineer and the editor in chief of concrete construction a sister publication of jlc responds.

How to flash window in concrete wall.

For example if the windows are flashed incorrectly then siding must be removed around each window to re flash them correctly and properly integrate the flashing with the sheathing wrap such as tyvek. The aluminum flashing shown in horgan. Although flanged windows were designed for installation in wood frame walls the task can be just as convenient and sound in concrete walls if proper procedure is followed. Tek 19 5a flashing details for concrete masonry walls ref.

What is the best type of flashing to use with concrete. The first step is to wrap the sill with self adhering flashing. The second half of window flashing occurs once the window unit is secured and squared within the rough. Fill that space with low expansion polyurethane spray foam.

Although flashing is the primary focus of this tek it should be understood that the role of vapor retarders air barriers and insulation are also important elements to consider for any wall design as the performance of the entire system can be dependent on. Read more on window flashing. Window flashing is installed at the same time as the window unit. Install window in the flashed opening and leave adequate space all around the window for insulation.

Typically flashing a window is a two part process. How to install a window in a concrete wall. Seeing doug horgan s photos of corroded aluminum flashing in repairing a stone patio over a living space jul 16 left me concerned about using metal flashing with concrete. 3 includes such details.

Flashing single wythe walls at the ends of bar joists which utilize wall pockets for bearing is shown in figures 8 and 8a. In a concrete wall without wood framing install the window framework by fastening it into the concrete wall with self tapping concrete screws. Caulking around the top and sides of window can often provide a temporary fix but over time the caulking will fail.