Most people without any construction experience know that a roof should be flat and not wavy or sagging.
How to fix sagging roof on old house.
If your roof is more than 30 years old rebuilding it will be the most effective approach to dealing with sagging.
Grab a flashlight and head up to your attic to inspect your roof rafters and decking specifically those where your.
Determining the problem determine where the sag is in your roof in relation to your attic.
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.
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.
Problems with the roof itself aren t the only reason a roof might sag.
You will need to remove the shingles and the old decking however which means there will be an exposed hole in the roof.
Typically the roof sheathing is about three eighths of an inch thick.
You may find that.
Determine the extent of damage.
So what happens with those elements is that you get more sagging and delamination of the roof sheathing.
The first step is to find out how many rafters are sagging and if anything else is damaged.
The other thing that causes this type of sag is an excessively long roof rafter without proper.
Fixing a sagging roof by bolstering the beams 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.
If your foundation has shifted or sunk your walls and roof might have shifted along with it.
With the inverted hinged truss in place a vertical wedge can be used to bend the sagged rafter upwards.
At the chimney the homeowner designed an inverted truss to straighten the sagged rafters.
Also inspect the metal or plywood gusset plates used where your wood meets on a truss.
Drill holes in angle iron.
Check the ceiling for sagging by attaching a string on one end of the beam and run it along the.
If the sagging roof is due to rotting or warping roof decking the repair will be much easier.
How to straighten sagging roof rafters.
Screw a 2x4 about 12 long.
In this case you ll probably notice tilting and cracks in your foundation.
To repair major foundation damage you ll need to talk with a construction professional.
And a different approach is needed at the chimney in order to add rafter support to straighten the sagged roof.
After your floor is straight it is time to concentrate on the next floor s ceiling.
The first step is to the basement first.