How to Build Roof Trusses

Roof trusses are used for fortifying the roof and the walls. If you don’t know how to build a roof truss, this guide will show you how.

Required Tools and Materials

3-inch deck screws
1 1/2-inch galvanized screws
Galvanized steel truss plates
2 x 4s

Step 1

Check the regulations for roof building. You can get the information from your local building regulatory office. You can choose from 2 x 6xs, 2 x 8s and other sizes. The thickness will hinge on the weight it must carry. Saw the timbers to the right size.

Step 2

Join the timber pieces using the galvanized steel connectors. You will end up with a triangle shape. Fasten them with 1 ½ inch screws.

Step 3

Put a 2 x 4 brace on the triangle. Make sure you set the brace in the middle of the triangle. If the truss will have a load bearing application, put more supports.

When you build a roof truss, set these extra supports at 90 degree angles. This should be from the bottom center of the support. It should angle to the truss top.

Step 4

Fasten the truss on the frame. Set aside a suitable overhang. The overhang required will hinge truss pitch size. You can get the dimensions or your architect can do this for you. If you are going to do the measurement yourself, make sure that it is accurate.

Step 5

Fasten the trusses on the frame. Fasten them with 3 inch screws. Set these every 24 inches. It is a good idea to put the braces in before the frame is secured. You should also check the plump before attaching the frame.

Step 6

Put the sheathing in place. This will be needed to support the trusses.

Tips and Warnings

The timber size to use will depend on the structure you will put it on. This must also be done in accordance with the building regulations in your areas. By following the codes, you will be assured the roof truss is safe to use and up to the standards.

Be careful when using the tools. Make sure that you wear goggles when cutting the timbers. You might also need some help when installing the roof truss.

It will take some effort to build a roof truss. You need to follow the directions so you will not make any errors. This is the best way to ensure the roof truss will stay in place.

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