You can lay the adhesive as drops every 8 or as beads.
How to glue baseboard to concrete walls.
Now apply glue then use nails through the base and into the dowels you pounded in.
Counterbore the tapcons in a 1 2 hole and then plug or bondo the whole.
You can apply the adhesive to the back of the baseboard.
Or adhesive and a few tapcons.
Cut your piece mark the wall behind the base and roto hammer 3 8 holes about every 4 6 ft.
Measure each wall in the room and note the measurements.
Place the baseboard molding that you want to use in the basement for at least two days.
How to install baseboard molding to concrete walls.
Scrub the bottom of the wall with a scrub brush.
Usually you will find this glue in diy stores at the flooring area.
Make sure you use a glue that is heavy duty and ideally dries out quickly so you don t have to apply pressure onto the baseboard trims for a long time.
Split some dowels or close to that round shape out of pt and pound them into the holes.
Measure the walls where the molding will be installed.
Lay the base on the floor and mark the hole locations on the base.
If the walls meet at an outside.
Cut all trim pieces to size with a circular saw jigsaw.
Construction adhesive and something to put a bit of pressure on the base while the adhesive tacks up enough.