elanamig wrote:
Robert Allison wrote:

In most cases like this, we have installed drywall over the
shiplap and then taped and floated, textured, then paint.
This also repairs the drafty quality of these kinds of walls,
as the gaps between the shiplap allow quite a bit of air and
sound through the walls, especially on exterior walls.


Robert, thanks for your reply. Do you think the thinnest (1/4")
drywall will be enough, or would we need to put up something thicker?

Thanks,
Elana


If you check, you will find that 3/8" is cheaper than 1/4",
and 3/8" will bridge the irregularities better. In answer to
your other question in another post, you do not have to remove
the wallpaper or cheesecloth to hang the drywall.

The issues you will have will be the trim. We address this
two ways. The best (but of course the most expensive) is to
remove all of the trim, install the drywall, then install jamb
extensions at windows (if wood trimmed) and doors. Then
reinstall trim and base. This gives you a good long lasting
result that will last as long as any other similar wall system.

The other method is to leave the trim in place and run the
drywall up to it. Tape and float the drywall, then caulk the
drywall to trim. This is not as satisfactory because the
caulk may fail in places and have to be maintained. Also, you
must be much more precise with your drywall installation. In
addition, it takes most of the 3 dimensional look that your
trim provides, leaving you with a flatter wall detail.

A lot of what you do will depend on your budget and your
tastes. Some older (thin) trim may be difficult to remove and
reuse, so that may also be an issue. Alot of the older homes
had 1x4 or 1x6 trim and base, so if you have that in your
home, removing and reusing it is not usually an issue.

--
Robert Allison
Rimshot, Inc.
Georgetown, TX