Material Specifications for Insulation

Material Specifications for Insulation Support. The following materials shall be used to support insulation, as required in the installation standards and procedures: • Wire or nylon mesh • Wire or nylon lacing materials • Other materials approved by TVA prior to their installation
Installation Requirements. The QCN member shall be responsible for ensuring that all attic insulation materials installed comply with these Program Standards. • Existing Conditions—The QCN member shall be responsible for determining if the installation of additional attic or ceiling insulation will cause structural damage to the residence, such as ensuring that the ceiling will support the additional weight of the insulation. If applicable, QCN members shall notify inspectors and customers prior to installing insulation if they determine that an R-value different from that recommended should be installed. • Amount of Insulation to be Installed—If no attic insulation exists, R30 shall be installed. If there is R18 or existing insulation, R19 shall be installed. • QCN Member Responsibilities—The QCN member shall be responsible for completing all preparation work involving insulation materials already existing in the residence, such as uncovering recessed light fixtures, doorbell transformers, and other heat-dissipating devices that were covered with existing insulation, providing blocking around such devices when necessary, etc. • Improperly Installed Vapor Barriers—Vapor barriers on existing batt or blanket insulation that have been installed improperly shall be either turned over so they are placed toward the living area of the residence (warm side in winter), or made ineffective by slashing several times with a sharp knife.