Hey all. I will start by saying that I am not a pro, though would consider myself a fairly skilled DIY’er having grown up in the country with a grandfather who was a builder whom I have worked with for probably 34 of my 41 years. He has since passed on and so my source of knowledge on things like this has changed. I will also say that I may be overthinking this a bit, but here goes.

1943 Home. Doing Full remodel as we plan on selling in the spring. It is not a big house so there is a limit on equity what we could possibly get, so while I am absolutely not trying to be cheap, I am trying to be smart by making it better than it is, but not sink money into a home we don’t plan on staying in when we are finished. In other words, I am not one to do a crappy job but also don’t want to burn money.

It would be a lot of work and money to rip the subfloor up and replace with 3/4 due to size and layout as well as 2 external doors that are on the outside wall and sitting on the 1/2″ subfloor.

My wife wants to install an LVP floor that will be monolithic with the dining room as well, so I have 3/4″ height I need to make up between the subfloor in the kitchen and the existing hardwood floor in the dining room (it is in rough shape and refinishing just isn’t practical). My first instinct was to just put a 3/4″ advantec underlayment and then an additional cushioning underlayment over top of everything before I laid the LVP. However, the more I am researching, it seems that LVP manufacturers and Advantec suggest using a playwood underlayment. That being said, does it then make sense that in this instance I should use a 3/4″ plywood underlayment instead of the Advantec?

This isn’t intended to be a debate between ply and Adavantec. I am fully in the camp of understanding that Advantec is superior, but in this specific instance, I feel it makes sense to use the plywood, but wanted to get some other input before I did so.