Wall To Flat Roof Connection

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.

Wall to flat roof connection.

When the trusses are oriented parallel to the wall the simplest method of connecting a braced wall panel to the roof floor system above is to frame and sheath the wall up to the roof floor deck above and attach the roof floor sheathing to the double top plate of the braced wall panel with 6d common 0 113 x 2 0 nails at 6 on center as shown in figure 3. Yes even flat roof to wall intersections are not being properly done. It is also used when the wall below provides a ledge with sufficient bearing area for the roof to bear on directly. Table 14 test configurations for roof to wall connection system tests 27 table 15 materials construction and fastening schedules for roof systems 28 table 16 summary of test results for roof to wall connection system tests 31 table 17 comparison of analytical and experimental results for roof to wall.

One way to gain access is to take up roof decking at the eaves as shown in figure 2. Some flat roofs have rafters from a ledger to supports at the end of the roof others have large outside beams with rafters set. Consequently for gable end roofs the most important roof to wall connections are those within 6 to 8 feet of the outside corners. In older wood frame construction the connection of roof trusses or rafters to walls is 2 or 3 sixteen penny 16d nails driven at angles toe nailed through the rafter or truss into the top plate of the wall.

The direct bearing connection is the simplest and most common connection in the home building industry. A direct bearing connection is used in instances where the wall below does not continue beyond the roof level i e no parapet. If the roof wall connection isn t accessible from inside the attic and the inspection indicates that you have to add hardware you will need more than just a peephole. The most common roof to wall intersections involve either a gable roof with its ridge running perpendicular to the wall or a shed roof that slopes downward away from the wall.

Proper roof wall abutment flashing examples.