The cause of this damage is often such things as a flood slow leak from plumbing improper maintenance and spills.
Water flood on laminate flooring.
Go over every tile individually when you check.
If a small amount of water has leaked toward the edges of the flooring pull up any quarter round shoe molding or baseboards around the perimeter.
Flooding or other significant water damage is a different story.
After you get readily vac d water prop the vac floor style nozzle in the lowest spot leave it running and it will draw the water to it.
Just about any way you can get water onto many laminate floors seems to result water damage to many of these laminate floors.
Water under laminate flooring when the water reaches under laminate flooring the water must be removed immediately.
As long as you wipe up any spilled water promptly the floor should be no worse for the wear.
If you spill some water on laminate flooring but promptly wipe it up the floor will suffer no damage.
When laminate gets saturated by water it absorbs the moisture which in turn breaks down the structure of the flooring.
Tiles can also be pushed apart by water damage.
Water damage to laminate flooring is a common occurrence seen by laminate flooring inspectors.
The water is trapped between the slab the laminate get someone you after it with a shop vac.
Laminate flooring is technically resistant to water damage.
When laminate flooring is saturated with water especially for a period of time damage will occur.
Unfortunately the situation changes if and when flooding occurs.
If laminate flooring becomes saturated with water it tends to warp quickly.