Anything u need to know about roofing. Including shingle/asphalt-3tap- dimensional -corrugated steal . Flat rubber roofs standing seam . Also tec tips on proper ways to flash/stepflash/counterflashing. Tips on how to repair damaged chimneys roof decking and truses . Also talk about overlaying n existing roof with either one medal or shingles. Tips on wear to use ice and water guard and why its important. I can teach u how to install new drip edge with out and wrinkles or uneven sections also why its important to always use shingle start and all the proper fasteners. Nail coil nail 2-1/2,3inch ripped shank nails and why there a must have to Lay new roof decking to insure the nails can't back them self out from hot/cold when seasons change and why adequate ventilation is one of the biggest things often looked over. O and we can't for get the pipe boots/flashing . How to properly install them depending on what roofing your working with....I can also help with any contracting