On Mar 13, 9:08 am, "Harry K" wrote:
....
Anyone who has every tryied to build with rough cut or remodel a house
that was built with it is _very_ familiar with the problems. ...
....
...I tried to use lumber I salvaged off a schoolhouse to
build my 18x30 addition. ...
Did build one 18' wall with the studs but only after lots of sorting.
I gave it up at that point, bit the bullet and bought new lumber.

Just a note...

Wasn't as much a problem until the advent of drywall -- with lath and
plaster, wall surfaces were much more readily finished to accomodate
some irregularity than with drywall where the finish surface plane is
the board itself. Of course, as anyone who has remodeled old houses
knows, rarely, if ever, are walls straight or corners square...

I regularly salvage old material, but generally would go to the
trouble of cleaning it up and dimensioning it before beginning a major
project with it. Of course, it helps to have a large industrial-
strength jointer and planer, of course...

In VA years ago, they salvaged material from an early schoolhouse and
stacked it for sale. Went for the purpose of getting one of the old
slate blackboards for the kids. Wandering around looking through
piles of joists and other framing lumber and noticed it was all quite
dark in color. Hmmm, me says...let's look at this. Scrape a little
corner off a 3x12 18-footer and yep! -- just what I thought:
virtually the whole thing was framed w/ walnut.

Placed a bid of $3000 for the entire stack of lumber and came away
with something under 8000 bd-ft of #1C and better walnut.