Floating Hardwood Floor ?

Planning to do some hardwood floor in my home. I am just wondering why is it necessary to nail three or four times on each piece ? Since the planks has tongue and grove on them, why can't one just nail the first pieces at the perimeter of the room and let all other pieces "float" ?
Why the floating concept can only be applied on laminate flooring but not real hardwood floor ? Just curious.
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real wood will act completely different than laminated products and the noise would be so annoying (creak, creak, creak)
JW wrote:

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Jim85CJ wrote:

If you have teenagers, that could be a good thing, making it harder for them to sneak in (or out) at times they shouldn't be....
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Good parenting should take care of that...
Glen A Stromquist wrote:

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Jim85CJ wrote:

Good parenting demands squeaky floors.
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Are you suggesting that noise is the main reason for not installing a floating hardwood floor ? Just curious.

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Laminate doesn't shrink, cup, and twist as much with changing humidity as real wood does. White oak can change size by as much as 8% of it's saturated size, in the cross-grain direction. Call it 4% for the maximim reasonable humidity ranges.
On 2" strip flooring, (50mm), that's two millimeters per board.
The tounges are what, 3/8" ? So it should take the accumulated shrinkage of less than 10 boards to create a big enough gap to pop one out..
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