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.
A: Fiberglass insulation is made of plastic reinforced by tiny glass fibers. This gives the plastic additional strength and improves its insulation capacity. Fiberglass insulation may come in pre-made sheets or mats, or workers may spray the mixture into wall voids using a pressure hose.