DIYbanter - View Single Post

wrote:

There are about 3 joists where movement is more than an inch. On the
worst one, the sliding has pulled the gusset right off the joint (the
opposite side joist is still straight). The worst areas are around the
duct work spaces where no X bracing or anything was ever installed.

It's also worse on the side that correlates with the front half of the
house. Might be that there has always been more furniture on that side,
or that the snow weight has been heavier as it's the north side of the
house and the south side of the roof rarely gets snow buildup because
the sun melts it, I don't know.

Of the rest, about 1/3rd have movement from between 1/2 to an inch, 1/3
are a 1/2 inch or less, and the last 3rd are pretty much straight.

I'm mostly worried about the 3 bad ones, and about keeping the others
from getting that bad.

About all I'd do I suspect then would be to repair the worst and add
bracing where it is lacking. Blocking cut to fit reasonably tightly
between the remainder will provide no place for them to go and can be
done much more simply than trying to return them to the "full upright
and uncomfortable position"...