In repairing a two-story city barn with a deteriorated wall, I'm
proceeding with a residing project, and I'd like to remediate what I can
along the way.
You may recall my question about rotted wood. I've since learned how you
can handle rot, in some cases, with wood epoxy, and plan to use that
where I can. Other wood may be sistered or replaced.
For the badly weathered wood in place, I'm considering doing a quick,
light slap with deck cleaner -- although I question the value myself,
and wonder whether the oxalic acid might hurt the wood further. I think
it will help me determine what I need to fix a little better, though. At
least I won't need to sand afterward.
The next step will be a coat of boiled linseed oil, to improve the
wood's flexibility so it can accept fasteners. If I could do more than
one coat, I would, but I think just the one will have to do. Can't get
involved. I have definitely found this to be of value with
finished-surface wood. I'm less interested in the appearance improvement
for wall studs, though. ;-)
The building isn't square, and the rot problems mean that the
comparatively new roof is sagging, as a couple of rafters have pulled
away from the roof beams. Fortunately the lower floor was given a secure
cross-bracing when walled with OSB and that's held things together.
My biggest conundrum is the sheathing question. Since we'll probably
have to do some major repairs to the framing (hopefully by next summer),
I don't want to just cover stuff up that has to come back down. Ideally
we'd do the whole shebang from the inside out. For various reasons
["neighbors", "city code enforcement"], we need to get a cosmetic layer
up now. But later we will need to work on corner posts, sill plate, and
probably even jack up the wall some, to save the roof.
I'm thinking a good choice would be a combination sheathing/siding
material such as Hardiboard or SmartSide, or siding-patterned plywood
panel. My theory is that I can put up the siding using a pattern that
leaves clapboard breaks near the end walls, so that we can remove only
that portion later on for corner post work. Does this make any sense?
What about cost considerations? Previously I was leaning toward
sheathing panels no matter what, because of worries about wall
deformation, but now I know that it's horizontally braced somewhat from
the inside. So I think "just" siding could do the job, for a lot less
work. If I later insulate this portion of the barn, though, will that be
a poor choice? Would my plan make it easy enough to change at a later
date? Is engineered wood as robust as old clapboard in terms of removal
and re-use? What if jacking, etc., undo any deformation -- how hard
would that be to handle if the siding is now "bowed" because the middle
studs have been raised up? And what about cost? What about labor? Would
plywood really be faster for installation/removal, because you do need
to fasten it just about as much? And what fasteners should I choose for
this contingency? Deck screws?