New Roof Flooded Building

[John C.]

Hello,

I have a building with a flat roof which needed to be replaced.  I paid a licensed and insured company, who is pretty big in our area, to replace it.  I'm not very familiar with how flat roofs work, but I'm going to relay what my handyman told me, based on what he saw and the account of a tenant who witnessed some of it:

-They tore the existing off the roof, did not replace any sheeting.

-Put down rolls of asphalt roofing.  Did not properly seal between the roles.

-Covered up the drains.  I'm being told that they brought new drains up to the roof, did not install them, and then took them back down.

-It rained, and the water from the rain stayed on the roof, up until 5 inches deep in some places.

-Ultimately, the water came through the roof/ceiling a soaked my first floor, insulation electric, sheet rock, flooring all ruined.

-The roofers do not return my calls.

-This is Pennsylvania, I have a copy of the contractors license and insurance.

-I have opened a claim with my insurance company, the adjuster has not inspected the property yet.

Any advice?