Complex surface modeling help!

Hi there, I'm a final year student working on my major project and I am required to create a fairing that I have designed myself.

The problem is that the fairing I have designed is quite complex, I have fully surfaced it and am happy with the result however I can’t seem to thicken and add material to the model.


I have tried everything spending hours adding to the curvature, there are still errors in the check feature but I really could do with some advice from someone who knows what they are doing.

Thank you for your time,

Jack

SolidworksSurfacing