Specifications include, but are not limited to: A. Plumbing piping systems to be insulated include: 1. Domestic Hot and Cold Water Piping, Above Ground; Manufacturers: Provide insulation products produced by one of the following for each type and temperature range of insulation. 1. Certainteed 2. Knauf 3. Manville 4. Owens-Corning 5. Pittsburgh Corning; Flame/Smoke Ratings: Provide composite piping insulation (insulation, jackets, covering, sealers, mastics and adhesives) with flame-spread rating not exceeding 25 and smoke developed rating not exceeding 50, as tested by ASTM E 84 (NFPA 255) method and UL 723. ; Fiberglass Insulation: Insulation shall be preformed, two-piece, heavy density fiberglass with self sealing ASJ jacket conforming to FS HH-I-558 Form D, Type III, and Class 12. Valves and fittings shall be insulated with fiberglass insulation of the same material thickness as insulation on adjacent pipe and having a molded PVC jacket. Jackets shall be Certainteed Snap-Form, Knauf Proto PVC or Zeston PVC. Insulation thickness shall be as follows: 1. Domestic Hot & Cold Water Piping: 1 inch thick for all sizes. ; General: Insulate all above ground domestic hot and cold water piping except do not insulate supplies to fixtures unless specifically required. Insulate horizontal waste lines receiving the discharge from HVAC drains. Insulate the underside of all roof drains and all roof drain piping installed above conditioned spaces.