[villagetinker]

Originally Posted by Aruca

My lanai is enclosed with sliders that sit higher than the floor but I hate the step down of 3.5” from the home to the lanai
Presently there is a tile floor I would go right over if I raise.

Question :: What options are there for raising floor to house level?

Polymer-modified concrete is an option but can a
wood frame with a sub-flooring board frame that are be built over existing tile floor with a Vapor Barrier?
I would like to use LVT Planking after the raise.

I asked the exact same question to Sumter County building department about a week ago, and was told this was not a good idea due to the possibility of termites. I was going to use pressure treated lumber, and they stated these release "vapors" that may be harmful, I have not had a chance to check out this claim. I was NOT told this would NOT be accepted, very strange. Bottom line, I did a basement up north, and the requirements were, vapor barrier between the concrete and the studs.
I am going to be following this post, as I would be able to do the wood based floor myself, versus the poured concrete (about 5.5 cubic yards) and associated labor and the leadtime.