Section 385-920-II - Flame SpreadAll manufactured homes constructed before June 15, 1976, are "grandfathered" from meeting flame spread limitations, except work that is performed to meet the requirement of this code shall not be exempt. The requirements are:
1. Ceiling interior finish shall not have a flame spread rating exceeding 75.2. Walls and ceilings adjacent to enclosing a furnace or water heater shall have an interior finish with a flame spread rating not exceeding 25. Sealants and other trim material 2 inches or less in width used to finish adjacent surfaces within this space are exempt if supported by framing members or by materials having a flame spread rating not exceeding 25.3. Exposed interior finishes adjacent to the cooking range shall have a flame spread rating not exceeding 50.4. Kitchen cabinet doors, countertops, backsplashes, exposed bottoms, and end panels shall have a flame spread rating not to exceed 200.5. Finish surfaces of plastic bathtubs, shower units, and tub or shower doors shall not exceed a flame spread of 200.6. No burner of a surface cooking unit shall be closer than 12 horizontal inches to a window or an exterior door.02-385 C.M.R. ch. 920, § II