I agree with the soundness of every part of your plan EXCEPT not removing the original shingle roofThe shingle roof is already at the end of its usable lifeThere’s no benefit to covering up old problems, and they will most likely affect the durability of the new roofPlus, removing the old roof gives you the opportunity to inspect and repair any issues with the roofing deckYour new insulation and metal roof will attach better and perform better by removing the old shingle roof.
Around 350 degrees usuallyLine a baking pan or dish or cookie sheet with aluminum foil, and coat the foil with a non-stick cooking sprayThis not only makes removing the finished chicken breast from the pan easier, but it will also speed clean-upYou can also use a baking pan that has just been greased, rather than lined with foilFollow your recipe’s cook time instructionsIf you are not following a recipe, bake the chicken until the juices from the chicken run clear While the chicken is being cooked, its juice will have a white tint to itWhen it has been fully cooked, it is easy to see the transition to a clear liquidAs a general guideline, bake boneless chicken breasts at 325-350° F for 15-25 minutesAs a general guideline, bake bone-in chicken breasts at 325-350° F for 30-45 minutes.
