Burning a 2hr and 10min dvd

Hi all, I am new to burning dvd movies and I just downloaded Imgburn which is great, Dvd Shrink and DVD Decrypter to perform all my burning activities. Although I just tried to burn a 2hr and 10min dvd in Imgburn, and it said that the file was to big to fit on my blank dvd disc, which is dvd+r single layer disc. Should I be using dual layer to burn dvds of this compacity?