How To Roof Against A Wall

Proper roof wall abutment flashing examples.

How to roof against a wall. Metal step flashings are pieces of metal that are shaped like an l at least 5 inches wide and tall and 8 inches long as shown in figure 2. If i can t get some sort of weather barrier against the wall at the end of the eave i apply a piece of housewrap that runs vertically from just below the soffit to at least 3 ft. Even though roof flashing is one of the most important elements of a roof not many people know how to install roof flashing against a wall properly. The proper installation of flashing at the point where the roof meets wall is to use metal step flashing.

If the roof runs flat up against the brick wall you must install the roof side of the flashing either under the last layer of shingles or over the roof material if it is metal. Flexible flashing tape seals the eave to the wall. Figure 1 roof plane butting against wall. Install base flashing under shingles or over metal roofing material.

How to frame a roof against a brick wall. Flashing is usually made of sheet metal and is used to seal and protect joints in a building like those where a roof meets the brick walls of a chimney from roof leaks by directing the flow of water away from the joint. How to install roof flashing against a wall with a corner when there is a corner where the roof meets the wall you will need a corner flashing piece. Figure 2 step flashing.

Metal flashing also called roof flashing goes against a stucco wall to protect it from water damage. Down the wall 6 in. The flat roofing material must go up the wall a minimum of 12 or up the wall and over the top of the wall if the wall is less than 12 high. The building inspector said a 20ft piece of lead was out of the questions and felt is not a long term solution.

For areas where the walls meet the roof you will need to use the step flashing technique. When the roof of an addition garage porch or patio meets a brick wall the intersection creates a number of concerns. Here is an attempt though maybe not a very good one to make the roof flashing serve also as a through the wall flashing with a tile roof. Below are two photographs of roof wall step flashing completed and effective of a slate roof against a brick wall below left and in process with step flashing against a dormer sidewall before the dormer siding has been put in place below right.

A roof or wall that is not properly sealed off from water can be extremely costly to fix not to mention the hassles that accompany the unwanted water. 2 of the walls come against a vertical wall the 1st floor of the semi. Horizontally around the inside corner and at least a foot beyond the end of the eave. Follow the photo for illustrated instructions.

A corner flashing piece can either be bought from the hardware store or it can be made using a regular step flashing piece.