Installing roof trusses

This step can turn out to be especially complex. Close the roof as quickly as possible because the rain and the wind could cause damage to the rest of the house.

Roof trusses (vertical roof supports) are generally pre-assembled by a manufacturer in accordance with your plan, and delivered to the construction site.
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1. Handle the trusses carefully
2. Precise support points
3. Nail the bracing
4. Install the facia
5. Install plywood panels
6. Attach the panels

1. Handle the trusses carefully

They are designed to resist to vertical pressure only. Therefore, they shouldn't be handled on the flat or leaned against the walls. Rather, they should be lifted onto the top of the house with ropes or a crane if yours is a high two-storey house.

2. Precise support points

Precise support points on trusses ease their anchoring to the outside walls of the house. Before installing them, mark anchor points every 24 in. (61 cm) on the double plates, then begin installation at the gable end of the roof.

3. Nail the bracing

The graph shows temporary sway bracing used to hold each truss into place. When the trusses are installed, nail the blocking into place, in accordance with the installation plan supplied by the manufacturer.

4. Install the facia

Trusses provide the structure for the eaves, leaving only the facia to be installed. Close the roof in as soon as possible to avoid rain and wind damage to the roof and the rest of the house. Install plywood roof panelling perpendicular to the trusses and ensure the joints are always on a truss and are offset.

5. Install plywood panels

Plywood panels are reasonably skid-free, easy to install and provide adequate rigidity and durability. Use "H" clips in-between the panels.

6. Attach the panels

Horizontally, panels are only attached to the trusses every 24 in. (61 cm), in keeping with the spacing of the trusses. Between trusses, attach the panels to one another using H-clips.
Finally, a roof over your head. Now the work can continue without delays caused by the weather.
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