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.
Determine the extent of damage.
Screw a 2x4 about 12 long.
With the inverted hinged truss in place a vertical wedge can be used to bend the sagged rafter upwards.
If your foundation has shifted or sunk your walls and roof might have shifted along with it.
So what happens with those elements is that you get more sagging and delamination of the roof sheathing.
Drill holes in angle iron.
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.
You may find that.
Check the ceiling for sagging by attaching a string on one end of the beam and run it along the.
At the chimney the homeowner designed an inverted truss to straighten the sagged rafters.
The other thing that causes this type of sag is an excessively long roof rafter without proper.
And a different approach is needed at the chimney in order to add rafter support to straighten the sagged roof.
Problems with the roof itself aren t the only reason a roof might sag.
How to fix a sagging roof line.
Determining the problem determine where the sag is in your roof in relation to your attic.
Being nervous about a sagging roof is understandable.
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.
Typically the roof sheathing is about three eighths of an inch thick.
How to straighten sagging roof rafters.
The first step is to the basement first.
You will need to remove the shingles and the old decking however which means there will be an exposed hole in the roof.
The first step is to find out how many rafters are sagging and if anything else is damaged.
After your floor is straight it is time to concentrate on the next floor s ceiling.
And in a 30 year old house you tend to not have very much ventilation.
If the sagging roof is due to rotting or warping roof decking the repair will be much easier.
In this case you ll probably notice tilting and cracks in your foundation.