Watch a complete flashing and installing drip cap on an exterior door installation. See the correct method to install drip cap under the house wrap for a leak proof exterior steel door installation. Caulking the brickmoulding to the wall and to the door jamb is a great way to increase the longevity of the door frame. Don't forget to caulk where the door meets the sill... this area is commonly over-looked. Make your new entry door installation last for years to come.