[Kam215]

The floor I'm working on is osb subfloor. I was laying down my laminate with an underlayment that also acts as a vapor barrier. I didn't realize this and from my research, this will cause issues later. The flooring store provided me with the underlay so I thought they gave me the right match. Will this be a problem? Should I just remove it and go buy an underlay without the vapor barrier? I've already lay down about 200sqft so I'd prefer not to redo it especially the joints are very fragile. I've already destroyed some trying to fix some other mistakes.
It's the eternity laminate pad and quickstep naturetek if that matters

 

[Colbyt]

Basement? crawlspace? or wet crawlspace?


Only the wet crawlspace would concern me. What makes you think you have a problem?

 

[chandler48]

What kind of "issues" does your research indicate will happen?

 

[carpdad]

Laminate underlayments I've seen are all about the same, some just more dense. None of them should be a problem. They will trap moisture if you spill water over the floor but osb will not absorb it quickly either. OSB has a wax coating, I think, to protect it somewhat during open construction time. If kitchen, you should have got more water resistant laminate or vinyl. Also, not all vinyl is water proof. Resistant vs proof, so read the manual and research the material.
If floating floor, no cushioning underlayment can become noisy floor problem.

 

[chandler48]

Back when I did do laminate flooring, I found out that if the underlayment was too thick and too cushy, the joints in the laminate would decouple, so I always recommend using what the manufacturer stipulates. It can also keep you in warranty.