Determine the size of the roof truss to be repaired.
Fixing uneven roof trusses.
At the chimney the homeowner designed an inverted truss to straighten the sagged rafters.
Trusses come in different lumber widths 2 by 6 or 2 by 8.
Localized damage to one or two trusses will typically not result in structural failure of the roof system but could cause the roof or ceiling to sag.
If a lot of trusses are damaged or one has been significantly modified or cut then consulting a engineer is wise.
Repairing this is called scabbing.
Obviously this is not a good situation as it can cause the entire roof to fail if not addressed.
Roof trusses are engineered components.
Now i can see the wall in roof mode and i know where to make the break in the truss.
The bottom image illustrates proper horizontal storage with blocking placed at a suffficient height beneath the stack of trusses to minimize lateral bending and to lessen moisture gain from the ground.
Set the angle of the circular saw blade to match the slope of your roof and run the saw along the top edge of each fascia board.
You can do this by measuring across the width of the truss.
The important aspects of this repair is the length of the split as you will need to adequately cover it.
When a truss becomes damaged cut or modified there is a chance of a structural overload or that they will not perform properly.
A roof truss is a frame typically made of wood to carry the weight of the roof s exterior surface.
Well a decent framer can fix it if he ignores the ties sets the trusses square to a wall and then works the ends with the cuts.
The top photo above shows trusses being improperly stored on uneven ground.
Then i drew another truss starting at the end of the first truss and going to the edge of the roof on the right.
Overview from time to time an attic rafter will split along a knot typically after having a new roof installed because of the workers walking around on it.
When damaged or altered this can effect structural integrity of th e roof system.
Roof sag sagging roof rafter repair site built rafter spreader mid span rafter ties smooth wavy roof.
I drew in a truss on the left going from the roof edge to over the bearing interior wall.
The overhang edge is always straight unless you use a slinky line.
The ho did the walls because that s easy didn t square up the walls and now expects the roof framer to fix it.
These trusses are usually engineered by a structural engineering company to carry a specific roof load.
With the inverted hinged truss in place a vertical wedge can be used to bend the sagged rafter upwards.
A 2 by 6 truss will measure 5 5 inches and a 2 by 8 truss will measure 7 5 inches.
Repairing a roof truss often requires replacing or reinforcing wood in its construction.
