How To Install Flat Roof Joists

Mark off a joist every 16 inches along the length of the wall with the last joist lining up against the opposite verge wall.

How to install flat roof joists.

Mark the installation location for each joist along the wall plate. Corbett grace their parents and even their kids are learning a lot about the many ways a few right many wrong to build a high performance home. Install steel joist hangers at each mark. There are basically 2 different ways to attach a roof joist to the top wall plate.

Start at one end of the wall so that the first joist is flush with the walls which run parallel to the joists. The bracket is a better idea for the fact that is prevents any type of warping or rollover of the joist when it is under heavy load. Repeat the process at both ends of each joist. The joist can be toe nailed into the top plate or a joist bracket can be used.

So any timber joists that are used need to be strong enough to support this weight. In addition you will still need tools such as a measuring tape drill and utility knife along with the following. Install braces or blocking between each set of joists for extra support and to prevent movement. As you may imagine there is a fair amount of weight involved here in terms of boards felt etc.

Sizes of joists needed for flat roof construction. Measure and mark the joists at each end of the roof about 4 feet in from the edge.