Hi l have a cottage in Nov Scotia which over looks the ocean. The cottage is woodframe construction. The walls are 2x4 with fibeglass insulation. The floor system is 2x8 with fibre glass insulation and is wrapped with a heavy reinforced membrane. The cottage which is 24x32 is skirted in with wolmanized plywood and has an 18" crawl space. I have a heating coil wrapped around my water line from ground level to frost line. What else can I do in regard to insulation so that I can ptotect my water lines and use the cottage year round?