Roofing- 5 properties- How to negotiate with roofers

[Mak K.]

I have 6 properties which got hit by the storm in Houston. My deductibles are $6K range and all properties are 2005+ build, 2000 SF +/- double story.

Location Houston TX

This is my first time working with insurance as well as roofing company. How do I negotiate with roofers. Also how do I make sure all secondary damage such as gutters, siding, windows etc are covered and accounted in insurance claim. What would be the best strategy? Tips/advice/lessons learnt?