How To Attach Roofing To Steel Trusses

Now when you are done with construction of roof trusses the only thing that you have to do is to take them to the roof safely.

How to attach roofing to steel trusses.

Nail a piece of 2 by 4 lumber diagonally from the inside of the rafter to the edge of the top plate with one nail in each end to hold the truss plumb or level from top to bottom. It is important to protect metal sheets from potentially corrosive situations and materials. If installing over green or damp lumber a positive vapor barrier must be installed to separate the wood from the sheet. Use clips based on the thickness of the plywood such as 5 8 or 3 4 inch.

Position a level on the rafter of the truss and adjust the top of the truss in or out to center the bubble in the indicator. It should be stretched as tight as possible without being pulled so tightly that it gets damaged. Toenail a truss into the top of the wall plate by nailing through the sides of the bottom chord at a 30 degree angle. Fasten it to the first rafter then unroll it only as far as the next one before nailing it in place.

Unroll the insulation with the vapor barrier side down. Install plywood clips also called h clips at 24 inch intervals onto the upper edge of the first run of plywood by hand. As with rafter style roofs toenailing is one of the most common ways of attaching a truss style roof to a wall plate. For this you can use metal gusset plates and attach these with the help of nails and glue.

This will ensure the good performance and long life of the metal. Use galvanized nails to attach the insulation securely to each of the rafters.