How To Install Flat Roof Joists

Mark the installation location for each joist along the wall plate.

How to install flat roof joists.

Install braces or blocking between each set of joists for extra support and to prevent movement. The joist can be toe nailed into the top plate or a joist bracket can be used. Start at one end of the wall so that the first joist is flush with the walls which run parallel to the joists. In addition you will still need tools such as a measuring tape drill and utility knife along with the following.

Old asbestos roofs are often replaced with flat roofs. So any timber joists that are used need to be strong enough to support this weight. Roofing timber steel joists plywood exterior covering such as epdm or modified bitumen water based adhesive foam with fibreglass backing insulation warm flat roofing. Mark off a joist every 16 inches along the length of the wall with the last joist lining up against the opposite verge wall.

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. Repeat the process at both ends of each joist. 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.

Drive screws into each pilot hole to fasten the joists in place. There are basically 2 different ways to attach a roof joist to the top wall plate.