raise the roof?

[morespace]

hi i have a recently built garage with an up and over garage door the fixings for this eats into the overhead space which i would now like to turn into a decent loft the easy answer is replace the door lower the ceiling to get more space overhead but i would like to put in some large velux windows and some extra headroom in the loft as i will probably turn it into a self contained unit.i wanted to know if there was a possible way to seperate the roof from the walls and just build on 2 or 3 rows of blocks and sit the roof back on perhaps using jacks of some description ???

[stoneyboy]

morespace,
You would need to remove all the roof tiles first and then jack up using acrows bolted to the walls - if it's a single garage 6 acrows with spreader plates on top of them should be adequate. I'm assuming you have a wall plate holding all the rafters together and there are 3 complete walls tied together.
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