[Commercial Roofing | DURO Last Roof Installer - Bellmore, NY - Kenco Designs, Inc. Kenco Designs is a leader in Long Island general contracting Services located in Bellmore. We specialize in all areas of home improvements from slate and asphalt roofing expert, vinyl siding expert, NY Roof-Tek, roofing specialist contractors, residential and commercial roof, dormers and extension specialists, kitchens and bathroom remodeling, custom kitchens, deck experts, porches and portico experts, window and door replacement, we offer free consultations and free estimates]