I am lifting the roof on an old pig farrowing barn to accommodate a
furniture restorer.

The roof is heavy but can be moved in one piece. So far I have raised
one side on Acrows and intend to lay two courses of brick to gain the
height needed.

What is a reasonable time to wait before heavily loading fresh
brickwork? I am particularly nervous of any side thrust encountered as I
start to jack up the other side.

regards
--
Tim Lamb