I will be butting two 7.5' rolls side by side for a garage floor. Does the factory edge allow the coins to line up, so it looks a little more seamless? Thank you,

The coin pattern on our Coin Nitro Rolls is not guaranteed to line up when you install multiple rolls next to each other. The best way to make them appear more seamless is to overlap the rolls and cut them down the seam. You would have to try and line up the coins for this to be effective.