24 C.F.R. § 3280.503 Materials.
Title 24 - Housing and Urban Development
Materials used for insulation shall be of proven effectiveness and adequate durability to assure that required design conditions concerning thermal transmission are attained.
Title 24: Housing and Urban Development
PART 3280—MANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARDS
Subpart F—Thermal Protection
§ 3280.503 Materials.
