Roof Strut Spacing

To determine how many trusses to create you will first need to measure both the width and the length of the structure you are building.

Roof strut spacing.

Struts should be adequately supported over studs in timber walls. These standards are as follows. Follow this guide to ensure the spacing and stability of your diy roof trusses. The same concept holds true for roof trusses.

Struts must be either vertical perpendicular to the rafters or at an angle to the vertical which does not exceed 35 o. So the space between rafters can be greater without reducing the maximum span. They are birdsmouthed or halved to fit underpurlins as shown below. The trusses should be a little longer than the exact width to allow for overhang and you will need sufficient trusses to mount across the length.

They should have anti slip blocks where necessary to prevent them sliding horizontally.