Any tip on this?

http://i64.photobucket.com/albums/h193/shellfish_man/Untitled-1-4.jpg

I needed to add a different patten over the tilled floor but because of the way the floor mesh is builded, how can I solve this problem easily besides just slowly adjusting the UVs till the till nicely. The patten is just going to be tilled only inside the red line.

Is it possible to not let the texture tile in UV layout?