I'm having countertops installed and the top cap of pony wall is two stacked 2x4s with the wood outer edge flush with the drywall. My first thought was just to prime the wood and use joint compound and tape to fill the gaps then skim coat to blend. But there is concern that wood movement will cause cracks.
Is there a better material to cover the wood with that is more forgiving?
The end of the studs had drywall material on it for 18 years and never cracked or separated. I would prefer to not use a trim board which is what they had done in the past. One drywall guy wont touch it unless I cut back the studs 1/4" from the face so he can install 1/4" drywall in a butt joint.