The attic will hit R80. Brazelton is doing much of the traditional renovation work himself, with the help of his father and a few friends. He sleeps inside the unheated, unfinished house on a cot, sometimes with the family's two dogs for companions. The more complicated work is being handled by a professional builder, Ryan Stegora.
Go with an aluminum patch. Use aluminum rivits or screws. Avoid stainless or other metal screws due to the interaction of different metals. Use a sealant like 3m 5200 or Boatlife. Do not use fiberglass to patch aluminum. It just doesn't hold up well.
Rigid fiberglass inlays are like adding a new bottom to your fiberglass bathtub or shower floors. Permanently repair large cracks and holes in less then an hour. Repair will last the life of your bathtub and shower. Will never re-crack and is Almost Invisible! May also be cut to fit and repair cracked shower floor pans and works with acrylic plastic surfaces too!..