I finished installing the last layer (plywood).
It's still missing some screws and I have to caulk this last layer but it can be done meanwhile.
Speaking about caulk, it has been a nightmare.
First, I couldn't find any acoustical caulk here in Portugal.
Even all the companies that do some acoustic work that I contacted didn't know what acoustical caulk is!!
I had to buy it from Spain, from the distributor of Auralex:
For now 11 of these:
Almost 20 € each!!!
Then the problem has been getting the caulking gun for these tubes that have 857ml (29 oz). After searching all stores nearby and the internet for Portugal I could only get guns for 300ml. I found it only in the US but they wouldn't sell it to Portugal
I then contacted the spanish Auralex distributor that told me that they have the same problem in Spain and in the UK, so he arranged a gun for me through Auralex US. Should come in a few days.
Here are the photos of the finished floating floor
Side photo to show all floor layers.
Next step: Wall framing!!