As per Vaastu Shastra, here are a few indicative ideas about the co-relation between the five elements and the directions :
Air Element appears to be associated with North – West Direction.
Water Element appears to be associated with North – East Direction.
Fire Element appears to be associated with South – East Direction.
Earth Element appears to be associated with South – West Direction.
Space Element appears to be associated with the Brahmasthana.
Fortunify 