How To Roof Against A Wall

To tie the roof into the siding the tin roofing panels must first be installed to.

How to roof against a wall.

Ideally i like to start by installing a 3 ft. 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. The sheet acts as a backup at a vulnerable junction. Sheet of housewrap or even better a piece of self adhering roof underlayment to the wall before the first truss or roof rafter is placed against it.

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. 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. In an existing construction you might have siding whether it be vinyl wood or brick. For areas where the walls meet the roof you will need to use the step flashing technique.

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. Figure 1 roof plane butting against wall. On lean to roofs where a sloping roof plane meets the siding endwall flashing is necessary to prevent leaks. Housewrap creates the foundation.

Proper roof wall abutment flashing examples. 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. In this case we ve gone against new construction. A corner flashing piece can either be bought from the hardware store or it can be made using a regular step flashing piece.

Normally this wall would have a house wrap on it like tyvek. 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. Follow the photo for illustrated instructions. 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.

The proper installation of flashing at the point where the roof meets wall is to use metal step flashing. Figure 2 step flashing. There you have a z trim and an end wall flashing that have been joined using a stitch screw. Metal flashing also called roof flashing goes against a stucco wall to protect it from water damage.