How To Correct Roof Sway

It you consider a short bit of roof and a post as a t then the way its going to move is the top from left to right.

How to correct roof sway.

Sagging rafters can lead to serious problems with the entire roofing system. Holding the triangle upright the angled sticks that meet at the top are the rafters. Bracing it with a bit of 3 x 1 screwed on in your axis means there is very little bearing surface. Traditional sloped roofs rely on the strength of triangulation.

Now add collar ties from one side of the rafter to the other. Sway back roof how much can it take. Sometimes this sagging is cosmetic other times repairs are called for to prevent actual collapse of the roof. If you glue three popsicle sticks together at their ends to form a triangle you ve got a decent model of how a roof frame works.

Once you have established how much the roof sag needs to be jacked up lay a 2x4 plate across the ceiling joists and nail directly under the ridge of the roof. The horizontal stick at the bottom is the rafter tie. First perform step 2 except keep the string under your beam and off to the side a bit to make room for some framing.