My current plan is to use two different products, one for cove and one for control joints. Concern isn’t moisture, more concerned about sealing for gases like radon.

Cove Joint: Sikaflex all purpose Non-Sag Construction sealant
I think this would be best for cove joint because it is no sag and will properly seal the joint.

Control Joint: Sikaflex Crack Flex Sealant
I think this would be best for control joints because it is self leveling and would be better for control joints.

Considering using Non-Sag construction sealant for both

Let me know if those are the best options or if they are for sure not good for this application.

Thank you!