How To Install Roof Rafters

Attach the first rafter.

How to install roof rafters.

Next set the framing square on top of the rafter beam and use a pencil to trace the outside edge of the framing square s tongue. The holder will keep the rafter in position now. Lay one end of the rafter over the outside wall frame and as you climb the ladder carry the other end of the rafter pre cut to conform to the angle of the roof or pull it up by using a rope and then set the rafter into the slot in the holder. Install the roof sheathing.

Depending on the shape of the roof the amount and the shape of the sheathing will vary. Don vandervort hometips. After you ve braced and installed all the rafters you re ready to start installing a layer of roof sheathing basically just plywood over which the weather stripping and shingles will be installed nailing it to the outside of the rafters accordingly. Then nail two pieces of 1 by or 2 by lumber of the same width as the rafters as show at left and about 18 inches long centered over both sides of the splice.

At the peak the rafters are nailed to a ridge board and at the. Once you ve marked the lines use your pencil to draw the diagonal length on the rafter. Or join the members using manufactured metal splice plates. Common rafters in a sloped roof common rafters run from the peak of the roof down to the top of the exterior walls of the building.

Test the rafter assembly by standing it up and lining it up with the edges of the shed floor. To cut roof rafters start by fixing the stair gauges on your framing square to the dimensions of your pitch.