HPM Building Supply in Kailua-Kona, Hawaii is the Largest Metal Roofing Manufacturer in the State. At HPM Building Supply we offer Custom Metal Roofing, Packaged Homes, Lumber & Building Materials, Doors & Windows, Electrical Contracting, Plumbing contracting and so much more. Call HPM Building Supply for all your Home Planning or Building needs. The Largest Metal Roofing Manufacturer in the State