P. Ialongo Building Co. is a well established Rhode island Roofing Contractor and does not use subcontractors. We have been in business for so many years because of our high level of standards. Our company is known for providing quality work and standing behind that. We use only quality products that offer warranties. Quality Roofing Products such as timberline shingles All of my materials are bought through quaility lumber yards. United Builders Supply carries quility shingles, siding, windows, doors, lumber and much more.