Roofing timber steel joists plywood exterior covering such as epdm or modified bitumen water based adhesive foam with fibreglass backing insulation warm flat roofing.
How to install flat roof 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.
So any timber joists that are used need to be strong enough to support this weight.
Drive screws into each pilot hole to fasten the joists in place.
Mark the installation location for each joist along the wall plate.
Old asbestos roofs are often replaced with flat roofs.
There are basically 2 different ways to attach a roof joist to the top wall plate.
Mark off a joist every 16 inches along the length of the wall with the last joist lining up against the opposite verge wall.
In addition you will still need tools such as a measuring tape drill and utility knife along with the following.
Repeat the process at both ends of each joist.
Sizes of joists needed for flat roof construction.
Install braces or blocking between each set of joists for extra support and to prevent movement.
Install steel joist hangers at each mark.
As you may imagine there is a fair amount of weight involved here in terms of boards felt etc.
Measure and mark the joists at each end of the roof about 4 feet in from the edge.