T&G

One of the main advantages of the tongue and groove (T&G) wood floor type is its secret nailing property. When properly installed the nails seem invisible, making the finished product look clean and classy. While installing tongue and groove wood floor boards is easier with a power nailer, you can also do it manually. Just get your knee pads ready if that is the case....

The secret nailing process for tongue and groove wood floor
With a power nailer, you can have apply right force to steer the nails through the board's tongues at the right angle without splitting the wood. However, with the manual hand and hammer method there is greater possibility you will not apply the right force at the right angle.

Putting the boards together
If you're using the manual method, it may be hard to exert full effort in driving together the floorboards so you will have to compensate for this. If the floor board you are installing is a bit misshapen and doesn't completely fit to the next one, you can use a big flathead screwdriver to draw them tight together. Using a scrap or spare piece of wood placed in between the board you're installing and the screwdriver, hit the screwdriver into the sub-floor and make it your lever in drawing the boards to each other. Check if the holes for the nails have already been drilled so that you can nail off the rest of the floor boards as you hold the screwdriver.