I have agreed to try and jack up some sagging drywall in a 40 year old
house that was installed improperly. (See help I got in the following
thread,

http://groups.google.com/group/alt.h...22a0d7119caa7d
)

So I think I have come up with a plan of attack, and would like
comments on that, but this is a job with the potential for a rooms
worth of drywall to come crashing down if not jacked up properly
(Christ, one rooms worth of drywall collapsing could lead to a shock-
wave that brought it all down the rest of the sagging drywall in the
house, I know that is a small likely hood but possible in theory). I
have insurance have not had to use it and don't care to anytime soon.
How should a job be handled that has a small but real chance of
causing a lot of damage if things go wrong when the reward might only
be a days pay if jacking is not very successful to a week or twos work
if things work right.

The plan of attack is to test what can be done with one of the
upstairs rooms, they are in the worst shape. Pick a room with not much
stuff to remove and remove all stuff. Drop cloths cover the floor. Add
a couple of hundred screws to the ceiling drywall, don't pull tight
just shore up the drywall. Now using a drywall jack jack up one sheet
gently and then tighten the screws. Repeat, with all the sheets, jack
up a little, screw up. Repeat, repeat, repeat to the point where
curved drywall starts "fighting" back. If the drywall has pulled up
enough spackle and paint. 10 to 16 hours of work?

Thanks for any thoughts on either issue.