Measure the walls and cut the trim to the appropriate size with a table saw.
Floor trim for brick wall.
Note the brick wall open floor plan and abundance of iron and vintage wood in this home.
Then apply construction adhesive at the top and bottom.
Depending upon the size of the walls you may need more than one piece for each wall or you may want to cut the trim.
If you can tack something to the floor temporarily as bracing that works well.
Old mill brick castle gate thin brick singles corners box of 25 7 625 in.
Ft 66 89.
How to install baseboards on a brick wall.
Then you can cut some bracing between the 2x4 and the baseboard to hold the baseboard tight into the pl glue.
Item 1524924 model lmqsu00603.
These components are all cohesive in the overall aesthetic of this home and trim along the ceiling would not work well with this design.
Smartcore 0 71 in x 94 49 in blue ridge pine plastic floor quarter round.
If not set some cement blocks along the floor perpendicular to the brick wall.
If you see some cut a few braces from 4 to 6 in.
Old mill thin brick systems colonial little cottonwood 2 25 in x 7 625 in individual piece brick veneer.
Lengths of scrap baseboard and put 45 degree angles on the ends.
First hold the base molding against the wall after you cut it to length and look for gaps.