Roofing Experts On Nairaland Lets Hear Your Views And Ideas

difference is clear,aluminium is by far better.

If you allow me I think aluminium roof is still the best over others. 
Infact advantages in aluminium far outweighs Nigerite products. It is very light, it can span any distance, it doesn't add too much weight on the structure, ease of transportation,e.t.c

I had written an article on it's advantages before, check:

 http://www.buildingcontractorsecrets.com/2007/12/advantages-of-aluminium-roof-to-others.html#links