You might also try raising the actual garage itself but this obviously has structural challenges.
How to raise roof on a garage.
There are six separate cost sections for raising a roof.
The cost breaks down to 40 materials and 60 labor if there s a problem that needs fixed roof repairs averages at 850.
If it is a detached garage and what we call western platform framing 2x4 framing sole plate top plate then detach the earth quake anchors and go along jacking up the structure a 2x4 width at a time every 4 ft until you reach the desired height.
If you need to lift the walls again the gap will stay covered.
One option is to re use the existing roof but you would have to rent a crane for a weekend to lift the old roof while new framing is installed then lower and reattach the roof.
Finally fill in the outside of the wall with tapered pieces of sheathing and siding.
You could brace the inside of your garage and use hydraulic lifts to raise the roof.
Before applying the finish siding install metal flashing over the sheathing and let the flashing run 3 in.
A common solution is adding collar ties which are similar to ceiling joists but a little higher up.
Additional support may be needed if the roof is not very stable.
If a gap doesn t close up try laying a plank across the roof and pound on it with a sledgehammer.
Planning and permits removing the exiting roof framing the extended wall and installing the roof roofing and siding finishing the space total cost and cost value roi.
If you want the ceiling vaulted all the way to the top it gets a little more complex and you ll need a structural ridge beam.
Nationally the cost to replace or install a roof is about 8 000.
Below the top of the foundation wall.
The type of crane you would need are not cheap to rent for the day.
Approaches to raising the roof.
Bolt some extensions onto your former anchor bolts to bring them to the new height.
A vaulted ceiling with collar ties usually has a large flat area above the sloped sides.
Consult a contractor for an estimate.