caulking joints - flexible or not?

[mxrider131]

I spent today filling in half the sawcuts in my garage to get ready to epoxy the floor on friday. I bought the dap acrylic painters caulk like the epoxy coat website says but I got the flexible kind. After putting it down and realizing it stays soft I'm worried that it will crack the epoxy in those areas whenever i put pressure on it. Should I go back and buy the non flexible caulk so it will harden and will a day be enough time for it to cure before i put the epoxy down? I need about 50 tubes so that why I bought the Dap stuff cause it came in a 12 pack for 17 bux. thanks. This is the stuff I used:
http://www.dap.com/product_details.aspx?BrandID=187&SubcatID=3

 

[hockey88fan]

I spent today filling in half the sawcuts in my garage to get ready to epoxy the floor on friday. I bought the dap acrylic painters caulk like the epoxy coat website says but I got the flexible kind. After putting it down and realizing it stays soft I'm worried that it will crack the epoxy in those areas whenever i put pressure on it. Should I go back and buy the non flexible caulk so it will harden and will a day be enough time for it to cure before i put the epoxy down? I need about 50 tubes so that why I bought the Dap stuff cause it came in a 12 pack for 17 bux. thanks. This is the stuff I used:
http://www.dap.com/product_details.aspx?BrandID=187&SubcatID=3

Nobody has chimed in yet but I've never seen the saw cuts filled with caulk, might have to try that.

 

[LegacyIndustrial]

Hockey:
We recommend a hard but flexible epoxy product if you want the seamless look.
Otherwise you can use caulk after the floor has been coated.

Be careful as anything with silicone in it will repel coatings.

 

[Cobra6]

MXrider

That latex caulk should be fine as long as there is no silicone in it.

 

[Edger]

Would the hard caulk resist loads better than the soft caulk? If your joints are sawcut about quarter inch wide then it has to be a sharp edge to get into the joint. If you walked on a sharp edge and pushed it into the joint maybe the hard caulk would depress too.

Legacy's epoxy joint fill would be a great deal harder.