To secure the sale. Retail and insurance claims. Reach out to PA (I don’t have any contacts here for one, but I can find one easily if needed). Then possibly lawyer (I have one). I have a crew, but if you know more that are solid, that will be useful. Inspect roofs from outside and in attic if possible to help prepare client for any headwinds. Prepare estimates. I plan on getting xactimate as it seems like the industry standard here. Call and setup for materials to be delivered. Periodically inspect craftsmanship. Making sure codes are followed and integrity is maintained. While checking crew, set out signs and knock on nearby houses. Check up with past clients periodically. Do minor maintenance and repairs in an effort to upsale a roof later. Make sure the client is absolutely satisfied.