you state the that floor appears flat ... all floors appear flat even when they are not ... did you check first ?

by checking first, I mean did you physically lay down a straight rigid tool (like a level) in various areas of the installation area to ensure that the subfloor's waviness (if any) is within the manufacturers allowed tolerances ????
(usually no more than one-eighth inch in six to eight feet - your installation instructions should specify the exact tolerance allowed) - (this has to be preformed all over the installation area)

did you acclimate the product to the area to ensure humidity has equalized and that the materials, the area, and the subfloor are within the temperatures stated in the instsllation instructions ???

when the area is below manufacturer stated temperatures, just turning on the heat on and begin installing when everything is cold is improper.

the laminate flooring, the subfloor, and the area temperature need to all be within specs before installing.

Follow all instructions to the letter.

lastly, it is noted that that product is good for all areas of the home except areas of high humidity.

I could find no installation specifications online as that floor product is manufacturers specifically for ikea by the makers of Pergo, Perstorp Industries, so I am just stating considerations general to laminate flooring installation.

they appear to have a Floor-laying guarantee:

"if you have any problem laying the floor, simply return the flooring and get your money back"

Here is a link that might be useful: ikea tunra laminate flooring

Thank you Floor Man! I am going to check the level of the floor.. and I had also not thought about thermal expansion of the boards. I have everything in one room now (the installation area) so I will equilibrate for 48 hours and try again.

My relative humidity is 50% right now, does that sound right for floor installation or a little high?

Thank you!

Thank you Floor Man! I am going to check the level of the floor.. and I had also not thought about thermal expansion of the boards. I have everything in one room now (the installation area) so I will equilibrate for 48 hours and try again.

My relative humidity is 50% right now, does that sound right for floor installation or a little high?

Thank you!

the humidity tolerances for your product should be listed in their installation instructioins somewhere.

that said, ideally, humidity for laminate flooring should be between 45% and 65%

dont forget about temperature.

the area needs a constant temperature and it neeeds to remain at that temp long enough to warm the subfloor to close to ambient room temp.

Hi,
First of all, no floors are flat. That's what the sub-floor material is for. My wife and I have been attempting to install the same floor. We're pretty experienced weekend warriors, having installed ceilings, crown molding, tile, an entire kitchen. We're still stumped. We did tear the flooring up and start from the other end of the tiny room we're using. In short sections the floor is fine, but it was a struggle to twist and bend the boards to lock in. The thing is, whether you stored the boards flat or not, they came bent and don't unbend. THey will only lock together when bent, As soon as you try to flatten them, they don't lock. The tongue and groove locking mechanism has very little tolerance so if it's not perfect, one end just pops out.
We're pulling up our floor this afternoon and taking it back to Ikea for a refund. We're going to Lumber Liquidators to get real flooring. Too bad, the Ikea floor was cheap and looked great... in pictures.

p.s. It would be helpful if pros that responded in these forums didn't just throw out answers out of the book. Obviously they haven't worked with the product and are just giving general responses.

We are having the exact same issues.
We had previously laid the exact same IKEA laminate, Tundra for a friend in her kitchen when we visited her in California with no issues whatsoever. It went down great with very little issues. That is one of the reason we picked Tundra for the basement project. We also had previously laid hard wood floors and laminate in our current home as well and it looks great.
Our basement is approximately 25 x 38 feet. We have the dri-core already down over the concrete. Our home was built about 10 years ago and the basement is dry.
We purchased the laminate in March 2009 from IKEA. We purchased the form and a laminate laying kit from IKEA too. We started installing the Tundra laminate May 2010. The flooring bundles were in the basement the whole time so we don�t think there was a climate acclimation issue.
When we started installing the laminate, we had problems right away. Laminate did not seem to click in easily at all. When you clicked in one side of the laminate, the other end would pop out. Or you might get to two or three rows and a gap would appear. You would have to go back and try and tap it in. It was so time consuming and hard to deal with. No new box seemed to be any easier to install than the last box. We finally gave up about half way through the basement when 5 or 6 rows back a larger gap appeared.
We did stagger about half a board so that no seems were close. We also used the spacers around the boarders from the IKEA laminate kit.
We are at a loss as to what might be the issue. Any help would be greatly appreciated.
PS We are about ready to pull our hair out!!!!!!!! IKEA offered to take back the boxes that are not open but that would mean $900 loss.
Help! Can you glue it down what?