I have read a bunch of posts on here so let me say up front, thank you for sharing your knowledge.

I am buying a home that is mid-construction. I have done my due diligence in most aspects but I need some knowledge on the wood floors. The home has rock and top trim in as well as hard wood floors (brazillian teak we believe). The floors were installed before the HVAC was installed and that was 1 year ago. The floors are installed on the main floor which is on piers above a closed basement. Better news - we live in Alabama - normal summer days are 95f/95%.

Here is my question. What happens when I turn on the AC?

What do I do to reduce problems as we go forward with cabinet, electrical and plumbing trim on the way to powering up the house and introducing AC.

I also have an acclimation problem with the sheet rock and trim. So we will have to ac the house for three weeks before we paint to repair cracks and gaps that will come from acclimating the house after sheet rock and trim have been sitting there for 14 months.

All advice welcomed. Floor is not coming out and of course it shouldn't need to. The home was installed with no AC and no AC was expected for at least 60 days when the installed it according to the gantt and inspection records. I assume it is normal to install before AC and HVAC come online (5 out of 5 GC's have told me they install hard wood BEFORE HVAC trims out) HOWEVER reading some posts on here that appears to be unusual so please feel free to correct me.

I hope I have provided enough information and I look forward to your comments and suggestions on minimizing any upcoming problems.

All builders don't like to turn on the hvac and I have heard multiple reasons from dirt getting into the ducts to the utility company not allowing a hook-up until finished and voiding the hvac warranty. They just are to cheap to pay the bill thats all. There's plenty info out there that you can find and copy to show them they are wrong.

So I make him turn it on before cabinets go in or it's gonna be a real mess.

When you power up the AC the RH will change. Since the floors are already installed, I would introduce the HVAC very slowly.
You didnt mention, but I'm assuming the Braz. Teak is a solid, ( not as stable as engineered).

Thank you folks. Yes it is a solid Braz. Teak --- we think. The building went bankrupt and we bought the house nearly complete. No cabinets, just rock and floors. We were told that we need to AC the house before paint and cabinets. My question is about acclimating the floors. Since floors appear to be installed before hvac is running in new construction I would assume that there is a standard operating procedure to introducing air conditioning AND would it matter that the floors have been down for 16 months with no AC and there is not splitting, cracking or curling that we can notice. Actually the floors have very solid and secure feeling when walking on them, no give at all.

Any thoughts on introducing AC or anything that should be done to help reduce problems from such.

Where are you located? We've seen a few questions like your recently. Introduce AC gradually and keep an eye on the rh (30 min if you can to 50% max in the house). A built in humidifier helps bunches. You may be in a zone thats relatively humid so thats why the floor is ok so far.

Humidity would be an understatement Baldwin County Alabama 20 minutes from the Gulf of Mexico. It is 95f/95% here today. So You're suggesting that I should take it down to 50% humidity over a period of how long?

With numbers like that who needs ac? ha

If it were me I'd go no more than 5 degrees F a week.

measure out a set of boards of 20 and see how off it is from the time it was installed. example if its 3" then you should get a net of 60". if it comes out that close then you may be lucky. I would bet that once you go from 95% rh down to something in the neborhood of 50 that you will open the floor up to a point you could loose a small cat in. if your jobsite is 95% and 95% humidity then the moistuer content of the floor should be over 20%. if you get the temp down to 75 and the rh down to 50% then the wood will have a mc closer to 9%. so if you do the math (im using jahhara because teak isnt listed) .00396 x 9 x 3 = .1069 inch shrinkage in each board. the numbers will actually be less because the floor is nailed in but you get the idea.

Funny one Kevin!

Gray10k, Kevin is correct as usual. You got a crawl space or basement? You need to dehumidify that as well and hopefully it will shrink all the same...well not really but some.