Spongy spot

[walker45]

I am laying about 1600 sq ft laminate on concrete basement floor I found a place maybe a sq ft that feels spongy and can see the laminate flexing when stepping on it is there anything to do for this spot I can remove planks back to this spot. Also some of my expansion joints tightened up against wall will this become a problem .

 

[Floorist]

Di you check for flatness before you started?

 

[walker45]

didn't actually measure all seemed level out of the 1600 sq ft 1 sq ft isn't bad. It isn't that bad it is just in a place where you walk all the time, didn't know if you can put something under to stiffen it up or not

 

[FloorMaven]

didn't actually measure all seemed level out of the 1600 sq ft 1 sq ft isn't bad. It isn't that bad it is just in a place where you walk all the time, didn't know if you can put something under to stiffen it up or not

Play sand.

 

[Darol Wester]

I've used a piece of vinyl and shoved it up under the area that needs support. Shy of pulling it all out and floating the low spot, it works great.

 

[Isola96]

I would check the expanstion gaps on both sizes. Not staggering and offseting the seams could make the planks pop up on you.

 

[eric248]

Also regarding the popup of the seam, could the laminate take on to much moisture making it swell, iknow some are not designed for long runs because of each plank can swell by a 1/8