I am plumbing a new house and would love to place the pex manifolds in the attic next to each water heater to save space and to make the runs as short as possible. I will have a main cold water cut off inside the master bedroom closet where the main water supply enters the house. In addition, I will have cut offs at each and every fixture/appliance. However, I am afraid of potential future manifold leaks/burst. I am using foam insulation and the underside of the roof deck will be sprayed - consequently the attic is suppose to remain within 6 to 8 degrees of the interior of the house - so attic temperature will not be a problem. I am in east Texas. What do you think? Am I crazy? Will installing the manifolds in the attic meet code since I will have a main shut off and individual fixture shut offs that are easily accessible?