Insulated Thermal Roofing System

Duro-Guard® Roof Insulation

Duro-Guard® Roof Insulation

Duro-Guard® polyisocyanurate (ISO) is our best-selling category of insulation, offering high R-value and several different products to meet the needs of any project. We also offer Expanded polystyrene (EPS) and extruded polystyrene (XPS) insulation, along with cover boards and vapor barriers are also available.

Duro-Guard® Full System Warranties

  • Insulation
  • Cover boards
  • Vapor retarders

Your Class A Roofing Team 40 Years of Proven Performance

Duro-Last® Roofing has been manufacturing single-ply membrane for Oregon flat and low sloped roofs since 1978. Duro-Last® Roofing started in Saginaw, Michigan. Due to our rapid growth a manufacturing plant was needed in the west coast. Over 30 years ago Duro-Last® opened in Grants Pass, Oregon. Since 1987 we have been manufacturing our custom fabricated roofing and edge metal right here in Oregon. Class A Roofing Consultants, located in Portland, are our independent sales representatives for Oregon. We have over 70 highly qualified contractors installing roofs in Portland, Eugene, Salem, Roseburg, Medford, Brookings, Coos Bay, Tillamook, Astoria, Bend, Hood River, The Dalles, Pendleton and every city in between.  Please call us today to receive a free roofing estimate from an authorized roofing contractor.