How To Build Roof Rafters For A Garage

Before you cut your boards you ll need to measure the width of your building and calculate the exact length of each rafter.

How to build roof rafters for a garage.

The first thing to determine is the pitch your roof will have and the span your roof needs to cover. The ridge cut also called the plumb cut at the top of the rafter the birdsmouth cut which itself comprises 2 different cuts where the rafter meets the building s wall and the tail cut at the base of the rafter. As you can see in the image you need to cut them at the right size and secure them to the top plates with galvanized screws after drilling pilot holes. For example if your roof is 24 feet long you can have a 4 12 roof pitch.

Cut it to the length you require and add the plumb cut to its ends. Before you begin building rafters you need to determine that you have the right tools materials and measurements. The first step of the project is to install the bottom rafters to the frame of the garage. When you cut the rafters you ll need to make 3 separate cuts.

The roof rafters provide integral structural support to the roof. Place the rafters every 24 on center if you want to get a professional result. Building installing roof rafters. This plumb cut should be a 45 degree angle cut.

So know the number of the roof trusses you ll need then double the number for you to acquire the number of the rafters you ll need when building the roof trusses. Insert construction screws every 2 3 inches 5 1 7 6 cm through the holes in the face of the plate and use an electric drill drive the screws deep into the wood. Add the total square footage of wall area less the garage door opening and roof area including the overhangs and divide that by 32 to give you the total number of sheets of sheathing you ll need. Apply a thin layer of construction adhesive to the backside of a plate.