How to fix sagging roof trusses or rafters.
How to repair an old sagging roof.
Most people without any construction experience know that a roof should be flat and not wavy or sagging.
Perhaps the sheathing is the problem with your sagging roof.
You may find that several are in need of straightening and that some of the sheathing must be replaced.
If that s what you re dealing with regarding your home take these steps to ensure your rafter or truss gets fixed properly.
Fixing a sagging roof by bolstering the beams replacing sheathing.
Screw a 2x4 about 12 long.
You ll need a steel l channel to get your rafter or truss back into shape.
Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your.
Your goal is to strengthen and reshape the roof through means of wooden braces 2x6 lumber possibly new or added purlins and maybe a come along manual winch.
Determining the problem determine where the sag is in your roof in relation to your attic.
Check the ceiling for sagging by attaching a string on one end of the beam and run it along the.
The first step is to the basement first.
Installing new rafters directly alongside the weak or damaged ones is often enough to correct this problem.
Being nervous about a sagging roof is understandable.
You will need to remove the shingles and the old decking however which means there will be an exposed hole in the roof.
This may be problematic in winter months but allowing the roof to continue to sag can lead to greater problems such as a cave in.
No matter what the reason when you see a house with a sagging roof it tends to make you nervous even if you don t know precisely why.
Before you try this method you need to determine whether or not the sheathing that remains is strong.
Also inspect the metal or plywood gusset plates used where your wood meets on a truss.
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.
In many cases you ll need to fix sagging trusses or rafters to repair your roof.
If the sagging roof is due to rotting or warping roof decking the repair will be much easier.
The first step is to find out how many rafters are sagging and if anything else is damaged.
How to fix a sagging roof line.
However it is important to fix the rafters before doing any other work to the roof.
