Window Head Flashing End Dam

Folding the rhf up will help prevent water from getting behind the cladding where the.

Window head flashing end dam. Then hammer it down flat against the jig. Fold the ends up or down. Place the bending jig over the flashing and bend up the end dam with a pair of needle nose pliers. This is particularly a problem if you have a rain screen wall.

Instead of cutting a head flashing the same length as the top of the window run it long and either bend it down over the edge of the window or bend it up and create an end dam. The back dams of manufactured pan flashing and sheet metal pan flashing must be protected against bending and breakage during window installation. Demonstration on how to bend end dams for the alberta building code. Caulk the outside of the end dam to the siding while you are caulking it to the window.

Use the fein multi master to cut the aluminum or vinyl to go around the window and two small slots for the end dams. Just as a back dam prevents water from being directed to the interior side of the opening end dams are needed to prevent water from running laterally off the pan and into the wall.