On Wed, 17 Feb 2010 10:45:52 -0800 (PST), "
wrote:

Hi, does anyone have a photo or a website that can show me how it
should have been done? It is a good learning experience for me.
The original install was done by the builder of our office building
about 5 years ago.

If it is 5 years old and leaks, speak to the builder. Do you own or
rent this building? Any warranty from the builder?