Sagging Roof Ridge Repair

If necessary jack up any sagging at the ridge.

Sagging roof ridge repair.

If your roof is sagging wavy or bowing there are six important things in the attic to check from a structural standpoint. Often if there has been a fire in the. Took about two weeks to very slowly encourage everything to move back into place. In a stick frame non truss sloped roof these issues usually cause the roof ridge to sag in the middle giving it a swayback look but can also cause one side of the roof to sag.

Roofs may sag because a ridge beam or ridge board is cracked or damaged. Push up on the plywood until the foam is touching the roof decking s underside. I pulled my own garage ridge back up to level with screw jacks on the ridge board and turnbuckled cables from opposing rafter ends. The first step is to find out how many rafters are sagging and if anything else is damaged.

Place the plywood and styrofoam side up against the damaged roof decking. Bolstering the beams of your roof is another solution to repairing a sagging roof however it is often something that requires assistance from another able bodied person since beams can be extremely heavy. Installing new rafters directly alongside the weak or damaged ones is often enough to correct this problem. Now add collar ties from one side of the rafter to the other.

However it is important to fix the rafters before doing any other work to the roof. Keep the plywood in place using a piece of lumbar strapping until you can get a roofing expert to repair it. The operative words here are gently and slowly. This may have been caused by any number of factors.

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. If these already exist nail a 2x4 to them directly under the 2x4 plate you nailed down before. You may find that several are in need of straightening and that some of the sheathing must be replaced. To permit mounting of the roof sag expander first bolt holes are drilled in corresponding positions near mid span for each pair of sagged rafters that are to be pushed apart and back to a more nearly straight position.

Fixing a sagging roof by bolstering the beams.