Put Aluminum Flashing Over Existing Garage Door

Pan flashing for exterior doors windows rot below a sliding glass door.

Put aluminum flashing over existing garage door.

This aluminum sill for a sliding glass door was installed over the plywood subfloor of the author s new york offices in the 1970 s. Aluminum capping is also referred to as aluminum cladding and aluminum wrapping. The head flashing strip should extend a 6 inch minimum over the top of the side jamb flashing material. What is aluminum capping.

Adding aluminum capping around your garage door will make this one less area of exterior home maintenance you ll need to worry about. Capping is the process of applying cut and formed aluminum sheeting over exterior wood trim. Below our next photo shows the extensive rot that ensued. The weather resistive barrier wrb material should be installed over the top of the door head flashing material.

A self adhered head flashing strip should be installed across the top of the doorway and over the drip cap vertical leg. Cut half inch notches into the z flashing on both ends where the flashing bends using the tin snips. The carpenter used no pan flashing.